xref: /openjdk10/jdk/src/java.sql.rowset/share/classes/com/sun/rowset/CachedRowSetImpl.java

/*
 * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.rowset;

import java.sql.*;
import javax.sql.*;
import java.io.*;
import java.math.*;
import java.util.*;
import java.text.*;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;

import javax.sql.rowset.*;
import javax.sql.rowset.spi.*;
import javax.sql.rowset.serial.*;
import com.sun.rowset.internal.*;
import com.sun.rowset.providers.*;
import sun.reflect.misc.ReflectUtil;

/**
 * The standard implementation of the <code>CachedRowSet</code> interface.
 *
 * See interface definition for full behavior and implementation requirements.
 * This reference implementation has made provision for a one-to-one write back
 * facility and it is curremtly be possible to change the peristence provider
 * during the life-time of any CachedRowSetImpl.
 *
 * @author Jonathan Bruce, Amit Handa
 */

public class CachedRowSetImpl extends BaseRowSet implements RowSet, RowSetInternal, Serializable, Cloneable, CachedRowSet {

    /**
     * The <code>SyncProvider</code> used by the CachedRowSet
     */
    private SyncProvider provider;

    /**
     * The <code>RowSetReaderImpl</code> object that is the reader
     * for this rowset.  The method <code>execute</code> uses this
     * reader as part of its implementation.
     * @serial
     */
    private RowSetReader rowSetReader;

    /**
     * The <code>RowSetWriterImpl</code> object that is the writer
     * for this rowset.  The method <code>acceptChanges</code> uses
     * this writer as part of its implementation.
     * @serial
     */
    private RowSetWriter rowSetWriter;

    /**
     * The <code>Connection</code> object that connects with this
     * <code>CachedRowSetImpl</code> object's current underlying data source.
     */
    private transient Connection conn;

    /**
     * The <code>ResultSetMetaData</code> object that contains information
     * about the columns in the <code>ResultSet</code> object that is the
     * current source of data for this <code>CachedRowSetImpl</code> object.
     */
    private transient ResultSetMetaData RSMD;

    /**
     * The <code>RowSetMetaData</code> object that contains information about
     * the columns in this <code>CachedRowSetImpl</code> object.
     * @serial
     */
    private RowSetMetaDataImpl RowSetMD;

    // Properties of this RowSet

    /**
     * An array containing the columns in this <code>CachedRowSetImpl</code>
     * object that form a unique identifier for a row. This array
     * is used by the writer.
     * @serial
     */
    private int keyCols[];

    /**
     * The name of the table in the underlying database to which updates
     * should be written.  This name is needed because most drivers
     * do not return this information in a <code>ResultSetMetaData</code>
     * object.
     * @serial
     */
    private String tableName;

    /**
     * A <code>Vector</code> object containing the <code>Row</code>
     * objects that comprise  this <code>CachedRowSetImpl</code> object.
     * @serial
     */
    private Vector<Object> rvh;

    /**
     * The current position of the cursor in this <code>CachedRowSetImpl</code>
     * object.
     * @serial
     */
    private int cursorPos;

    /**
     * The current position of the cursor in this <code>CachedRowSetImpl</code>
     * object not counting rows that have been deleted, if any.
     * <P>
     * For example, suppose that the cursor is on the last row of a rowset
     * that started with five rows and subsequently had the second and third
     * rows deleted. The <code>absolutePos</code> would be <code>3</code>,
     * whereas the <code>cursorPos</code> would be <code>5</code>.
     * @serial
     */
    private int absolutePos;

    /**
     * The number of deleted rows currently in this <code>CachedRowSetImpl</code>
     * object.
     * @serial
     */
    private int numDeleted;

    /**
     * The total number of rows currently in this <code>CachedRowSetImpl</code>
     * object.
     * @serial
     */
    private int numRows;

    /**
     * A special row used for constructing a new row. A new
     * row is constructed by using <code>ResultSet.updateXXX</code>
     * methods to insert column values into the insert row.
     * @serial
     */
    private InsertRow insertRow;

    /**
     * A <code>boolean</code> indicating whether the cursor is
     * currently on the insert row.
     * @serial
     */
    private boolean onInsertRow;

    /**
     * The field that temporarily holds the last position of the
     * cursor before it moved to the insert row, thus preserving
     * the number of the current row to which the cursor may return.
     * @serial
     */
    private int currentRow;

    /**
     * A <code>boolean</code> indicating whether the last value
     * returned was an SQL <code>NULL</code>.
     * @serial
     */
    private boolean lastValueNull;

    /**
     * A <code>SQLWarning</code> which logs on the warnings
     */
    private SQLWarning sqlwarn;

    /**
     * Used to track match column for JoinRowSet consumption
     */
    private String strMatchColumn ="";

    /**
     * Used to track match column for JoinRowSet consumption
     */
    private int iMatchColumn = -1;

    /**
     * A <code>RowSetWarning</code> which logs on the warnings
     */
    private RowSetWarning rowsetWarning;

    /**
     * The default SyncProvider for the RI CachedRowSetImpl
     */
    private String DEFAULT_SYNC_PROVIDER = "com.sun.rowset.providers.RIOptimisticProvider";

    /**
     * The boolean variable indicating locatorsUpdateValue
     */
    private boolean dbmslocatorsUpdateCopy;

    /**
     * The <code>ResultSet</code> object that is used to maintain the data when
     * a ResultSet and start position are passed as parameters to the populate function
     */
    private transient ResultSet resultSet;

    /**
     * The integer value indicating the end position in the ResultSetwhere the picking
     * up of rows for populating a CachedRowSet object was left off.
     */
    private int endPos;

    /**
     * The integer value indicating the end position in the ResultSetwhere the picking
     * up of rows for populating a CachedRowSet object was left off.
     */
    private int prevEndPos;

    /**
     * The integer value indicating the position in the ResultSet, to populate the
     * CachedRowSet object.
     */
    private int startPos;

    /**
     * The integer value indicating the position from where the page prior to this
     * was populated.
     */
    private int startPrev;

    /**
     * The integer value indicating size of the page.
     */
    private int pageSize;

    /**
     * The integer value indicating number of rows that have been processed so far.
     * Used for checking whether maxRows has been reached or not.
     */
    private int maxRowsreached;
    /**
     * The boolean value when true signifies that pages are still to follow and a
     * false value indicates that this is the last page.
     */
    private boolean pagenotend = true;

    /**
     * The boolean value indicating whether this is the first page or not.
     */
    private boolean onFirstPage;

    /**
     * The boolean value indicating whether this is the last page or not.
     */
    private boolean onLastPage;

    /**
     * The integer value indicating how many times the populate function has been called.
     */
    private int populatecallcount;

    /**
     * The integer value indicating the total number of rows to be processed in the
     * ResultSet object passed to the populate function.
     */
    private int totalRows;

    /**
     * The boolean value indicating how the CahedRowSet object has been populated for
     * paging purpose. True indicates that connection parameter is passed.
     */
    private boolean callWithCon;

    /**
     * CachedRowSet reader object to read the data from the ResultSet when a connection
     * parameter is passed to populate the CachedRowSet object for paging.
     */
    private CachedRowSetReader crsReader;

    /**
     * The Vector holding the Match Columns
     */
    private Vector<Integer> iMatchColumns;

    /**
     * The Vector that will hold the Match Column names.
     */
    private Vector<String> strMatchColumns;

    /**
     * Trigger that indicates whether the active SyncProvider is exposes the
     * additional TransactionalWriter method
     */
    private boolean tXWriter = false;

    /**
     * The field object for a transactional RowSet writer
     */
    private TransactionalWriter tWriter = null;

    protected transient JdbcRowSetResourceBundle resBundle;

    private boolean updateOnInsert;



    /**
     * Constructs a new default <code>CachedRowSetImpl</code> object with
     * the capacity to hold 100 rows. This new object has no metadata
     * and has the following default values:
     * <pre>
     *     onInsertRow = false
     *     insertRow = null
     *     cursorPos = 0
     *     numRows = 0
     *     showDeleted = false
     *     queryTimeout = 0
     *     maxRows = 0
     *     maxFieldSize = 0
     *     rowSetType = ResultSet.TYPE_SCROLL_INSENSITIVE
     *     concurrency = ResultSet.CONCUR_UPDATABLE
     *     readOnly = false
     *     isolation = Connection.TRANSACTION_READ_COMMITTED
     *     escapeProcessing = true
     *     onInsertRow = false
     *     insertRow = null
     *     cursorPos = 0
     *     absolutePos = 0
     *     numRows = 0
     * </pre>
     * A <code>CachedRowSetImpl</code> object is configured to use the default
     * <code>RIOptimisticProvider</code> implementation to provide connectivity
     * and synchronization capabilities to the set data source.
     * <P>
     * @throws SQLException if an error occurs
     */
    public CachedRowSetImpl() throws SQLException {

        try {
           resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
        } catch(IOException ioe) {
            throw new RuntimeException(ioe);
        }

        // set the Reader, this maybe overridden latter
        try {
            provider = AccessController.doPrivileged(new PrivilegedExceptionAction<>() {
                @Override
                public SyncProvider run() throws SyncFactoryException {
                    return SyncFactory.getInstance(DEFAULT_SYNC_PROVIDER);
                }
            }, null, new RuntimePermission("accessClassInPackage.com.sun.rowset.providers"));
        } catch (PrivilegedActionException pae) {
            throw (SyncFactoryException) pae.getException();
        }

        if (!(provider instanceof RIOptimisticProvider)) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidp").toString());
        }

        rowSetReader = (CachedRowSetReader)provider.getRowSetReader();
        rowSetWriter = (CachedRowSetWriter)provider.getRowSetWriter();

        // allocate the parameters collection
        initParams();

        initContainer();

        // set up some default values
        initProperties();

        // insert row setup
        onInsertRow = false;
        insertRow = null;

        // set the warninings
        sqlwarn = new SQLWarning();
        rowsetWarning = new RowSetWarning();

    }

    /**
     * Provides a <code>CachedRowSetImpl</code> instance with the same default properties as
     * as the zero parameter constructor.
     * <pre>
     *     onInsertRow = false
     *     insertRow = null
     *     cursorPos = 0
     *     numRows = 0
     *     showDeleted = false
     *     queryTimeout = 0
     *     maxRows = 0
     *     maxFieldSize = 0
     *     rowSetType = ResultSet.TYPE_SCROLL_INSENSITIVE
     *     concurrency = ResultSet.CONCUR_UPDATABLE
     *     readOnly = false
     *     isolation = Connection.TRANSACTION_READ_COMMITTED
     *     escapeProcessing = true
     *     onInsertRow = false
     *     insertRow = null
     *     cursorPos = 0
     *     absolutePos = 0
     *     numRows = 0
     * </pre>
     *
     * However, applications will have the means to specify at runtime the
     * desired <code>SyncProvider</code> object.
     * <p>
     * For example, creating a <code>CachedRowSetImpl</code> object as follows ensures
     * that a it is established with the <code>com.foo.provider.Impl</code> synchronization
     * implementation providing the synchronization mechanism for this disconnected
     * <code>RowSet</code> object.
     * <pre>
     *     Hashtable env = new Hashtable();
     *     env.put(javax.sql.rowset.spi.SyncFactory.ROWSET_PROVIDER_NAME,
     *         "com.foo.provider.Impl");
     *     CachedRowSetImpl crs = new CachedRowSet(env);
     * </pre>
     * <p>
     * Calling this constructor with a <code>null</code> parameter will
     * cause the <code>SyncFactory</code> to provide the reference
     * optimistic provider <code>com.sun.rowset.providers.RIOptimisticProvider</code>.
     * <p>
     * In addition, the following properties can be associated with the
     * provider to assist in determining the choice of the synchronizaton
     * provider such as:
     * <ul>
     * <li><code>ROWSET_SYNC_PROVIDER</code> - the property specifying the
     * <code>SyncProvider</code> class name to be instantiated by the
     * <code>SyncFacttory</code>
     * <li><code>ROWSET_SYNC_VENDOR</code> - the property specifying the software
     * vendor associated with a <code>SyncProvider</code> implementation.
     * <li><code>ROWSET_SYNC_PROVIDER_VER</code> - the property specifying the
     * version of the <code>SyncProvider</code> implementation provided by the
     * software vendor.
     * </ul>
     * More specific detailes are available in the <code>SyncFactory</code>
     * and <code>SyncProvider</code> specificiations later in this document.
     * <p>
     * @param env a <code>Hashtable</code> object with a list of desired
     *        synchronization providers
     * @throws SQLException if the requested provider cannot be found by the
     * synchronization factory
     * @see SyncProvider
     */
    public CachedRowSetImpl(@SuppressWarnings("rawtypes") Hashtable env) throws SQLException {


        try {
           resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
        } catch(IOException ioe) {
            throw new RuntimeException(ioe);
        }

        if (env == null) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.nullhash").toString());
        }

        String providerName = (String)env.get(
        javax.sql.rowset.spi.SyncFactory.ROWSET_SYNC_PROVIDER);

        // set the Reader, this maybe overridden latter
        provider =
        SyncFactory.getInstance(providerName);

        rowSetReader = provider.getRowSetReader();
        rowSetWriter = provider.getRowSetWriter();

        initParams(); // allocate the parameters collection
        initContainer();
        initProperties(); // set up some default values
    }

    /**
     * Sets the <code>rvh</code> field to a new <code>Vector</code>
     * object with a capacity of 100 and sets the
     * <code>cursorPos</code> and <code>numRows</code> fields to zero.
     */
    private void initContainer() {

        rvh = new Vector<Object>(100);
        cursorPos = 0;
        absolutePos = 0;
        numRows = 0;
        numDeleted = 0;
    }

    /**
     * Sets the properties for this <code>CachedRowSetImpl</code> object to
     * their default values. This method is called internally by the
     * default constructor.
     */

    private void initProperties() throws SQLException {

        if(resBundle == null) {
            try {
               resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
            } catch(IOException ioe) {
                throw new RuntimeException(ioe);
            }
        }
        setShowDeleted(false);
        setQueryTimeout(0);
        setMaxRows(0);
        setMaxFieldSize(0);
        setType(ResultSet.TYPE_SCROLL_INSENSITIVE);
        setConcurrency(ResultSet.CONCUR_UPDATABLE);
        if((rvh.size() > 0) && (isReadOnly() == false))
            setReadOnly(false);
        else
            setReadOnly(true);
        setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
        setEscapeProcessing(true);
        //setTypeMap(null);
        checkTransactionalWriter();

        //Instantiating the vector for MatchColumns

        iMatchColumns = new Vector<Integer>(10);
        for(int i = 0; i < 10 ; i++) {
           iMatchColumns.add(i, -1);
        }

        strMatchColumns = new Vector<String>(10);
        for(int j = 0; j < 10; j++) {
           strMatchColumns.add(j,null);
        }
    }

    /**
     * Determine whether the SyncProvider's writer implements the
     * <code>TransactionalWriter<code> interface
     */
    private void checkTransactionalWriter() {
        if (rowSetWriter != null) {
            Class<?> c = rowSetWriter.getClass();
            if (c != null) {
                Class<?>[] theInterfaces = c.getInterfaces();
                for (int i = 0; i < theInterfaces.length; i++) {
                    if ((theInterfaces[i].getName()).indexOf("TransactionalWriter") > 0) {
                        tXWriter = true;
                        establishTransactionalWriter();
                    }
                }
            }
        }
    }

    /**
     * Sets an private field to all transaction bounddaries to be set
     */
    private void establishTransactionalWriter() {
        tWriter = (TransactionalWriter)provider.getRowSetWriter();
    }

    //-----------------------------------------------------------------------
    // Properties
    //-----------------------------------------------------------------------

    /**
     * Sets this <code>CachedRowSetImpl</code> object's command property
     * to the given <code>String</code> object and clears the parameters,
     * if any, that were set for the previous command.
     * <P>
     * The command property may not be needed
     * if the rowset is produced by a data source, such as a spreadsheet,
     * that does not support commands. Thus, this property is optional
     * and may be <code>null</code>.
     *
     * @param cmd a <code>String</code> object containing an SQL query
     *            that will be set as the command; may be <code>null</code>
     * @throws SQLException if an error occurs
     */
    public void setCommand(String cmd) throws SQLException {

        super.setCommand(cmd);

        if(!buildTableName(cmd).equals("")) {
            this.setTableName(buildTableName(cmd));
        }
    }


    //---------------------------------------------------------------------
    // Reading and writing data
    //---------------------------------------------------------------------

    /**
     * Populates this <code>CachedRowSetImpl</code> object with data from
     * the given <code>ResultSet</code> object.  This
     * method is an alternative to the method <code>execute</code>
     * for filling the rowset with data.  The method <code>populate</code>
     * does not require that the properties needed by the method
     * <code>execute</code>, such as the <code>command</code> property,
     * be set. This is true because the method <code>populate</code>
     * is given the <code>ResultSet</code> object from
     * which to get data and thus does not need to use the properties
     * required for setting up a connection and executing this
     * <code>CachedRowSetImpl</code> object's command.
     * <P>
     * After populating this rowset with data, the method
     * <code>populate</code> sets the rowset's metadata and
     * then sends a <code>RowSetChangedEvent</code> object
     * to all registered listeners prior to returning.
     *
     * @param data the <code>ResultSet</code> object containing the data
     *             to be read into this <code>CachedRowSetImpl</code> object
     * @throws SQLException if an error occurs; or the max row setting is
     *          violated while populating the RowSet
     * @see #execute
     */

     public void populate(ResultSet data) throws SQLException {
        int rowsFetched;
        Row currentRow;
        int numCols;
        int i;
        Map<String, Class<?>> map = getTypeMap();
        Object obj;
        int mRows;

        if (data == null) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.populate").toString());
        }
        this.resultSet = data;

        // get the meta data for this ResultSet
        RSMD = data.getMetaData();

        // set up the metadata
        RowSetMD = new RowSetMetaDataImpl();
        initMetaData(RowSetMD, RSMD);

        // release the meta-data so that aren't tempted to use it.
        RSMD = null;
        numCols = RowSetMD.getColumnCount();
        mRows = this.getMaxRows();
        rowsFetched = 0;
        currentRow = null;

        while ( data.next()) {

            currentRow = new Row(numCols);

            if ( rowsFetched > mRows && mRows > 0) {
                rowsetWarning.setNextWarning(new RowSetWarning("Populating rows "
                + "setting has exceeded max row setting"));
            }
            for ( i = 1; i <= numCols; i++) {
                /*
                 * check if the user has set a map. If no map
                 * is set then use plain getObject. This lets
                 * us work with drivers that do not support
                 * getObject with a map in fairly sensible way
                 */
                if (map == null || map.isEmpty()) {
                    obj = data.getObject(i);
                } else {
                    obj = data.getObject(i, map);
                }
                /*
                 * the following block checks for the various
                 * types that we have to serialize in order to
                 * store - right now only structs have been tested
                 */
                if (obj instanceof Struct) {
                    obj = new SerialStruct((Struct)obj, map);
                } else if (obj instanceof SQLData) {
                    obj = new SerialStruct((SQLData)obj, map);
                } else if (obj instanceof Blob) {
                    obj = new SerialBlob((Blob)obj);
                } else if (obj instanceof Clob) {
                    obj = new SerialClob((Clob)obj);
                } else if (obj instanceof java.sql.Array) {
                    if(map != null)
                        obj = new SerialArray((java.sql.Array)obj, map);
                    else
                        obj = new SerialArray((java.sql.Array)obj);
                }

                currentRow.initColumnObject(i, obj);
            }
            rowsFetched++;
            rvh.add(currentRow);
        }

        numRows = rowsFetched ;
        // Also rowsFetched should be equal to rvh.size()

        // notify any listeners that the rowset has changed
        notifyRowSetChanged();


    }

    /**
     * Initializes the given <code>RowSetMetaData</code> object with the values
     * in the given <code>ResultSetMetaData</code> object.
     *
     * @param md the <code>RowSetMetaData</code> object for this
     *           <code>CachedRowSetImpl</code> object, which will be set with
     *           values from rsmd
     * @param rsmd the <code>ResultSetMetaData</code> object from which new
     *             values for md will be read
     * @throws SQLException if an error occurs
     */
    private void initMetaData(RowSetMetaDataImpl md, ResultSetMetaData rsmd) throws SQLException {
        int numCols = rsmd.getColumnCount();

        md.setColumnCount(numCols);
        for (int col=1; col <= numCols; col++) {
            md.setAutoIncrement(col, rsmd.isAutoIncrement(col));
            if(rsmd.isAutoIncrement(col))
                updateOnInsert = true;
            md.setCaseSensitive(col, rsmd.isCaseSensitive(col));
            md.setCurrency(col, rsmd.isCurrency(col));
            md.setNullable(col, rsmd.isNullable(col));
            md.setSigned(col, rsmd.isSigned(col));
            md.setSearchable(col, rsmd.isSearchable(col));
             /*
             * The PostgreSQL drivers sometimes return negative columnDisplaySize,
             * which causes an exception to be thrown.  Check for it.
             */
            int size = rsmd.getColumnDisplaySize(col);
            if (size < 0) {
                size = 0;
            }
            md.setColumnDisplaySize(col, size);
            md.setColumnLabel(col, rsmd.getColumnLabel(col));
            md.setColumnName(col, rsmd.getColumnName(col));
            md.setSchemaName(col, rsmd.getSchemaName(col));
            /*
             * Drivers return some strange values for precision, for non-numeric data, including reports of
             * non-integer values; maybe we should check type, & set to 0 for non-numeric types.
             */
            int precision = rsmd.getPrecision(col);
            if (precision < 0) {
                precision = 0;
            }
            md.setPrecision(col, precision);

            /*
             * It seems, from a bug report, that a driver can sometimes return a negative
             * value for scale.  javax.sql.rowset.RowSetMetaDataImpl will throw an exception
             * if we attempt to set a negative value.  As such, we'll check for this case.
             */
            int scale = rsmd.getScale(col);
            if (scale < 0) {
                scale = 0;
            }
            md.setScale(col, scale);
            md.setTableName(col, rsmd.getTableName(col));
            md.setCatalogName(col, rsmd.getCatalogName(col));
            md.setColumnType(col, rsmd.getColumnType(col));
            md.setColumnTypeName(col, rsmd.getColumnTypeName(col));
        }

        if( conn != null){
           // JDBC 4.0 mandates as does the Java EE spec that all DataBaseMetaData methods
           // must be implemented, therefore, the previous fix for 5055528 is being backed out
            dbmslocatorsUpdateCopy = conn.getMetaData().locatorsUpdateCopy();
        }
    }

    /**
     * Populates this <code>CachedRowSetImpl</code> object with data,
     * using the given connection to produce the result set from
     * which data will be read.  A second form of this method,
     * which takes no arguments, uses the values from this rowset's
     * user, password, and either url or data source properties to
     * create a new database connection. The form of <code>execute</code>
     * that is given a connection ignores these properties.
     *
     * @param conn A standard JDBC <code>Connection</code> object that this
     * <code>CachedRowSet</code> object can pass to a synchronization provider
     * to establish a connection to the data source
     * @throws SQLException if an invalid <code>Connection</code> is supplied
     *           or an error occurs in establishing the connection to the
     *           data source
     * @see #populate
     * @see java.sql.Connection
     */
    public void execute(Connection conn) throws SQLException {
        // store the connection so the reader can find it.
        setConnection(conn);

        if(getPageSize() != 0){
            crsReader = (CachedRowSetReader)provider.getRowSetReader();
            crsReader.setStartPosition(1);
            callWithCon = true;
            crsReader.readData((RowSetInternal)this);
        }

        // Now call the current reader's readData method
        else {
           rowSetReader.readData((RowSetInternal)this);
        }
        RowSetMD = (RowSetMetaDataImpl)this.getMetaData();

        if(conn != null){
            // JDBC 4.0 mandates as does the Java EE spec that all DataBaseMetaData methods
            // must be implemented, therefore, the previous fix for 5055528 is being backed out
            dbmslocatorsUpdateCopy = conn.getMetaData().locatorsUpdateCopy();
        }

    }

    /**
     * Sets this <code>CachedRowSetImpl</code> object's connection property
     * to the given <code>Connection</code> object.  This method is called
     * internally by the version of the method <code>execute</code> that takes a
     * <code>Connection</code> object as an argument. The reader for this
     * <code>CachedRowSetImpl</code> object can retrieve the connection stored
     * in the rowset's connection property by calling its
     * <code>getConnection</code> method.
     *
     * @param connection the <code>Connection</code> object that was passed in
     *                   to the method <code>execute</code> and is to be stored
     *                   in this <code>CachedRowSetImpl</code> object's connection
     *                   property
     */
    private void setConnection (Connection connection) {
        conn = connection;
    }


    /**
     * Propagates all row update, insert, and delete changes to the
     * underlying data source backing this <code>CachedRowSetImpl</code>
     * object.
     * <P>
     * <b>Note</b>In the reference implementation an optimistic concurrency implementation
     * is provided as a sample implementation of a the <code>SyncProvider</code>
     * abstract class.
     * <P>
     * This method fails if any of the updates cannot be propagated back
     * to the data source.  When it fails, the caller can assume that
     * none of the updates are reflected in the data source.
     * When an exception is thrown, the current row
     * is set to the first "updated" row that resulted in an exception
     * unless the row that caused the exception is a "deleted" row.
     * In that case, when deleted rows are not shown, which is usually true,
     * the current row is not affected.
     * <P>
     * If no <code>SyncProvider</code> is configured, the reference implementation
     * leverages the <code>RIOptimisticProvider</code> available which provides the
     * default and reference synchronization capabilities for disconnected
     * <code>RowSets</code>.
     *
     * @throws SQLException if the cursor is on the insert row or the underlying
     *          reference synchronization provider fails to commit the updates
     *          to the datasource
     * @throws SyncProviderException if an internal error occurs within the
     *          <code>SyncProvider</code> instance during either during the
     *          process or at any time when the <code>SyncProvider</code>
     *          instance touches the data source.
     * @see #acceptChanges(java.sql.Connection)
     * @see javax.sql.RowSetWriter
     * @see javax.sql.rowset.spi.SyncProvider
     */
    public void acceptChanges() throws SyncProviderException {
        if (onInsertRow == true) {
            throw new SyncProviderException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());
        }

        int saveCursorPos = cursorPos;
        boolean success = false;
        boolean conflict = false;

        try {
            if (rowSetWriter != null) {
                saveCursorPos = cursorPos;
                conflict = rowSetWriter.writeData((RowSetInternal)this);
                cursorPos = saveCursorPos;
            }

            if (tXWriter) {
                // do commit/rollback's here
                if (!conflict) {
                    tWriter = (TransactionalWriter)rowSetWriter;
                    tWriter.rollback();
                    success = false;
                } else {
                    tWriter = (TransactionalWriter)rowSetWriter;
                    if (tWriter instanceof CachedRowSetWriter) {
                        ((CachedRowSetWriter)tWriter).commit(this, updateOnInsert);
                    } else {
                        tWriter.commit();
                    }

                    success = true;
                }
            }

            if (success == true) {
                setOriginal();
            } else if (!(success) ) {
                throw new SyncProviderException(resBundle.handleGetObject("cachedrowsetimpl.accfailed").toString());
            }

        } catch (SyncProviderException spe) {
               throw spe;
        } catch (SQLException e) {
            e.printStackTrace();
            throw new SyncProviderException(e.getMessage());
        } catch (SecurityException e) {
            throw new SyncProviderException(e.getMessage());
        }
    }

    /**
     * Propagates all row update, insert, and delete changes to the
     * data source backing this <code>CachedRowSetImpl</code> object
     * using the given <code>Connection</code> object.
     * <P>
     * The reference implementation <code>RIOptimisticProvider</code>
     * modifies its synchronization to a write back function given
     * the updated connection
     * The reference implementation modifies its synchronization behaviour
     * via the <code>SyncProvider</code> to ensure the synchronization
     * occurs according to the updated JDBC <code>Connection</code>
     * properties.
     *
     * @param con a standard JDBC <code>Connection</code> object
     * @throws SQLException if the cursor is on the insert row or the underlying
     *                   synchronization provider fails to commit the updates
     *                   back to the data source
     * @see #acceptChanges
     * @see javax.sql.RowSetWriter
     * @see javax.sql.rowset.spi.SyncFactory
     * @see javax.sql.rowset.spi.SyncProvider
     */
    public void acceptChanges(Connection con) throws SyncProviderException{
      setConnection(con);
      acceptChanges();
    }

    /**
     * Restores this <code>CachedRowSetImpl</code> object to its original state,
     * that is, its state before the last set of changes.
     * <P>
     * Before returning, this method moves the cursor before the first row
     * and sends a <code>rowSetChanged</code> event to all registered
     * listeners.
     * @throws SQLException if an error is occurs rolling back the RowSet
     *           state to the definied original value.
     * @see javax.sql.RowSetListener#rowSetChanged
     */
    public void restoreOriginal() throws SQLException {
        Row currentRow;
        for (Iterator<?> i = rvh.iterator(); i.hasNext();) {
            currentRow = (Row)i.next();
            if (currentRow.getInserted() == true) {
                i.remove();
                --numRows;
            } else {
                if (currentRow.getDeleted() == true) {
                    currentRow.clearDeleted();
                }
                if (currentRow.getUpdated() == true) {
                    currentRow.clearUpdated();
                }
            }
        }
        // move to before the first
        cursorPos = 0;

        // notify any listeners
        notifyRowSetChanged();
    }

    /**
     * Releases the current contents of this <code>CachedRowSetImpl</code>
     * object and sends a <code>rowSetChanged</code> event object to all
     * registered listeners.
     *
     * @throws SQLException if an error occurs flushing the contents of
     *           RowSet.
     * @see javax.sql.RowSetListener#rowSetChanged
     */
    public void release() throws SQLException {
        initContainer();
        notifyRowSetChanged();
    }

    /**
     * Cancels deletion of the current row and notifies listeners that
     * a row has changed.
     * <P>
     * Note:  This method can be ignored if deleted rows are not being shown,
     * which is the normal case.
     *
     * @throws SQLException if the cursor is not on a valid row
     */
    public void undoDelete() throws SQLException {
        if (getShowDeleted() == false) {
            return;
        }
        // make sure we are on a row
        checkCursor();

        // don't want this to happen...
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }

        Row currentRow = (Row)getCurrentRow();
        if (currentRow.getDeleted() == true) {
            currentRow.clearDeleted();
            --numDeleted;
            notifyRowChanged();
        }
    }

    /**
     * Immediately removes the current row from this
     * <code>CachedRowSetImpl</code> object if the row has been inserted, and
     * also notifies listeners the a row has changed.  An exception is thrown
     * if the row is not a row that has been inserted or the cursor is before
     * the first row, after the last row, or on the insert row.
     * <P>
     * This operation cannot be undone.
     *
     * @throws SQLException if an error occurs,
     *                         the cursor is not on a valid row,
     *                         or the row has not been inserted
     */
    public void undoInsert() throws SQLException {
        // make sure we are on a row
        checkCursor();

        // don't want this to happen...
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }

        Row currentRow = (Row)getCurrentRow();
        if (currentRow.getInserted() == true) {
            rvh.remove(cursorPos-1);
            --numRows;
            notifyRowChanged();
        } else {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.illegalop").toString());
        }
    }

    /**
     * Immediately reverses the last update operation if the
     * row has been modified. This method can be
     * called to reverse updates on a all columns until all updates in a row have
     * been rolled back to their originating state since the last synchronization
     * (<code>acceptChanges</code>) or population. This method may also be called
     * while performing updates to the insert row.
     * <P>
     * {@code undoUpdate} may be called at any time during the life-time of a
     * rowset, however after a synchronization has occurs this method has no
     * affect until further modification to the RowSet data occurs.
     *
     * @throws SQLException if cursor is before the first row, after the last
     *     row in rowset.
     * @see #undoDelete
     * @see #undoInsert
     * @see java.sql.ResultSet#cancelRowUpdates
     */
    public void undoUpdate() throws SQLException {
        // if on insert row, cancel the insert row
        // make the insert row flag,
        // cursorPos back to the current row
        moveToCurrentRow();

        // else if not on insert row
        // call undoUpdate or undoInsert
        undoDelete();

        undoInsert();

    }

    //--------------------------------------------------------------------
    // Views
    //--------------------------------------------------------------------

    /**
     * Returns a new <code>RowSet</code> object backed by the same data as
     * that of this <code>CachedRowSetImpl</code> object and sharing a set of cursors
     * with it. This allows cursors to interate over a shared set of rows, providing
     * multiple views of the underlying data.
     *
     * @return a <code>RowSet</code> object that is a copy of this <code>CachedRowSetImpl</code>
     * object and shares a set of cursors with it
     * @throws SQLException if an error occurs or cloning is
     *                         not supported
     * @see javax.sql.RowSetEvent
     * @see javax.sql.RowSetListener
     */
    public RowSet createShared() throws SQLException {
        RowSet clone;
        try {
            clone = (RowSet)clone();
        } catch (CloneNotSupportedException ex) {
            throw new SQLException(ex.getMessage());
        }
        return clone;
    }

    /**
     * Returns a new <code>RowSet</code> object containing by the same data
     * as this <code>CachedRowSetImpl</code> object.  This method
     * differs from the method <code>createCopy</code> in that it throws a
     * <code>CloneNotSupportedException</code> object instead of an
     * <code>SQLException</code> object, as the method <code>createShared</code>
     * does.  This <code>clone</code>
     * method is called internally by the method <code>createShared</code>,
     * which catches the <code>CloneNotSupportedException</code> object
     * and in turn throws a new <code>SQLException</code> object.
     *
     * @return a copy of this <code>CachedRowSetImpl</code> object
     * @throws CloneNotSupportedException if an error occurs when
     * attempting to clone this <code>CachedRowSetImpl</code> object
     * @see #createShared
     */
    protected Object clone() throws CloneNotSupportedException  {
        return (super.clone());
    }

    /**
     * Creates a <code>RowSet</code> object that is a deep copy of
     * this <code>CachedRowSetImpl</code> object's data, including
     * constraints.  Updates made
     * on a copy are not visible to the original rowset;
     * a copy of a rowset is completely independent from the original.
     * <P>
     * Making a copy saves the cost of creating an identical rowset
     * from first principles, which can be quite expensive.
     * For example, it can eliminate the need to query a
     * remote database server.
     * @return a new <code>CachedRowSet</code> object that is a deep copy
     *           of this <code>CachedRowSet</code> object and is
     *           completely independent from this <code>CachedRowSetImpl</code>
     *           object.
     * @throws SQLException if an error occurs in generating the copy of this
     *           of the <code>CachedRowSetImpl</code>
     * @see #createShared
     * @see javax.sql.RowSetEvent
     * @see javax.sql.RowSetListener
     */
    public CachedRowSet createCopy() throws SQLException {
        ObjectOutputStream out;
        ByteArrayOutputStream bOut = new ByteArrayOutputStream();
        try {
            out = new ObjectOutputStream(bOut);
            out.writeObject(this);
        } catch (IOException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        }

        ObjectInputStream in;

        try {
            ByteArrayInputStream bIn = new ByteArrayInputStream(bOut.toByteArray());
            in = new ObjectInputStream(bIn);
        } catch (StreamCorruptedException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        } catch (IOException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        }

        try {
            //return ((CachedRowSet)(in.readObject()));
            CachedRowSetImpl crsTemp = (CachedRowSetImpl)in.readObject();
            crsTemp.resBundle = this.resBundle;
            return ((CachedRowSet)crsTemp);

        } catch (ClassNotFoundException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        } catch (OptionalDataException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        } catch (IOException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.clonefail").toString() , ex.getMessage()));
        }
    }

    /**
     * Creates a <code>RowSet</code> object that is a copy of
     * this <code>CachedRowSetImpl</code> object's table structure
     * and the constraints only.
     * There will be no data in the object being returned.
     * Updates made on a copy are not visible to the original rowset.
     * <P>
     * This helps in getting the underlying XML schema which can
     * be used as the basis for populating a <code>WebRowSet</code>.
     *
     * @return a new <code>CachedRowSet</code> object that is a copy
     * of this <code>CachedRowSetImpl</code> object's schema and
     * retains all the constraints on the original rowset but contains
     * no data
     * @throws SQLException if an error occurs in generating the copy
     * of the <code>CachedRowSet</code> object
     * @see #createShared
     * @see #createCopy
     * @see #createCopyNoConstraints
     * @see javax.sql.RowSetEvent
     * @see javax.sql.RowSetListener
     */
    public CachedRowSet createCopySchema() throws SQLException {
        // Copy everything except data i.e all constraints

        // Store the number of rows of "this"
        // and make numRows equals zero.
        // and make data also zero.
        int nRows = numRows;
        numRows = 0;

        CachedRowSet crs = this.createCopy();

        // reset this object back to number of rows.
        numRows = nRows;

        return crs;
    }

    /**
     * Creates a <code>CachedRowSet</code> object that is a copy of
     * this <code>CachedRowSetImpl</code> object's data only.
     * All constraints set in this object will not be there
     * in the returning object.  Updates made
     * on a copy are not visible to the original rowset.
     *
     * @return a new <code>CachedRowSet</code> object that is a deep copy
     * of this <code>CachedRowSetImpl</code> object and is
     * completely independent from this <code>CachedRowSetImpl</code> object
     * @throws SQLException if an error occurs in generating the copy of the
     * of the <code>CachedRowSet</code>
     * @see #createShared
     * @see #createCopy
     * @see #createCopySchema
     * @see javax.sql.RowSetEvent
     * @see javax.sql.RowSetListener
     */
    public CachedRowSet createCopyNoConstraints() throws SQLException {
        // Copy the whole data ONLY without any constraints.
        CachedRowSetImpl crs;
        crs = (CachedRowSetImpl)this.createCopy();

        crs.initProperties();
        try {
            crs.unsetMatchColumn(crs.getMatchColumnIndexes());
        } catch(SQLException sqle) {
            //do nothing, if the setMatchColumn is not set.
        }

        try {
            crs.unsetMatchColumn(crs.getMatchColumnNames());
        } catch(SQLException sqle) {
            //do nothing, if the setMatchColumn is not set.
        }

        return crs;
    }

    /**
     * Converts this <code>CachedRowSetImpl</code> object to a collection
     * of tables. The sample implementation utilitizes the <code>TreeMap</code>
     * collection type.
     * This class guarantees that the map will be in ascending key order,
     * sorted according to the natural order for the key's class.
     *
     * @return a <code>Collection</code> object consisting of tables,
     *         each of which is a copy of a row in this
     *         <code>CachedRowSetImpl</code> object
     * @throws SQLException if an error occurs in generating the collection
     * @see #toCollection(int)
     * @see #toCollection(String)
     * @see java.util.TreeMap
     */
    public Collection<?> toCollection() throws SQLException {

        TreeMap<Integer, Object> tMap = new TreeMap<>();

        for (int i = 0; i<numRows; i++) {
            tMap.put(i, rvh.get(i));
        }

        return (tMap.values());
    }

    /**
     * Returns the specified column of this <code>CachedRowSetImpl</code> object
     * as a <code>Collection</code> object.  This method makes a copy of the
     * column's data and utilitizes the <code>Vector</code> to establish the
     * collection. The <code>Vector</code> class implements a growable array
     * objects allowing the individual components to be accessed using an
     * an integer index similar to that of an array.
     *
     * @return a <code>Collection</code> object that contains the value(s)
     *         stored in the specified column of this
     *         <code>CachedRowSetImpl</code>
     *         object
     * @throws SQLException if an error occurs generated the collection; or
     *          an invalid column is provided.
     * @see #toCollection()
     * @see #toCollection(String)
     * @see java.util.Vector
     */
    public Collection<?> toCollection(int column) throws SQLException {

        int nRows = numRows;
        Vector<Object> vec = new Vector<>(nRows);

        // create a copy
        CachedRowSetImpl crsTemp;
        crsTemp = (CachedRowSetImpl) this.createCopy();

        while(nRows!=0) {
            crsTemp.next();
            vec.add(crsTemp.getObject(column));
            nRows--;
        }

        return (Collection)vec;
    }

    /**
     * Returns the specified column of this <code>CachedRowSetImpl</code> object
     * as a <code>Collection</code> object.  This method makes a copy of the
     * column's data and utilitizes the <code>Vector</code> to establish the
     * collection. The <code>Vector</code> class implements a growable array
     * objects allowing the individual components to be accessed using an
     * an integer index similar to that of an array.
     *
     * @return a <code>Collection</code> object that contains the value(s)
     *         stored in the specified column of this
     *         <code>CachedRowSetImpl</code>
     *         object
     * @throws SQLException if an error occurs generated the collection; or
     *          an invalid column is provided.
     * @see #toCollection()
     * @see #toCollection(int)
     * @see java.util.Vector
     */
    public Collection<?> toCollection(String column) throws SQLException {
        return toCollection(getColIdxByName(column));
    }

    //--------------------------------------------------------------------
    // Advanced features
    //--------------------------------------------------------------------


    /**
     * Returns the <code>SyncProvider</code> implementation being used
     * with this <code>CachedRowSetImpl</code> implementation rowset.
     *
     * @return the SyncProvider used by the rowset. If not provider was
     *          set when the rowset was instantiated, the reference
     *          implementation (default) provider is returned.
     * @throws SQLException if error occurs while return the
     *          <code>SyncProvider</code> instance.
     */
    public SyncProvider getSyncProvider() throws SQLException {
        return provider;
    }

    /**
     * Sets the active <code>SyncProvider</code> and attempts to load
     * load the new provider using the <code>SyncFactory</code> SPI.
     *
     * @throws SQLException if an error occurs while resetting the
     *          <code>SyncProvider</code>.
     */
    public void setSyncProvider(String providerStr) throws SQLException {
        provider =
        SyncFactory.getInstance(providerStr);

        rowSetReader = provider.getRowSetReader();
        rowSetWriter = provider.getRowSetWriter();
    }


    //-----------------
    // methods inherited from RowSet
    //-----------------






    //---------------------------------------------------------------------
    // Reading and writing data
    //---------------------------------------------------------------------

    /**
     * Populates this <code>CachedRowSetImpl</code> object with data.
     * This form of the method uses the rowset's user, password, and url or
     * data source name properties to create a database
     * connection.  If properties that are needed
     * have not been set, this method will throw an exception.
     * <P>
     * Another form of this method uses an existing JDBC <code>Connection</code>
     * object instead of creating a new one; therefore, it ignores the
     * properties used for establishing a new connection.
     * <P>
     * The query specified by the command property is executed to create a
     * <code>ResultSet</code> object from which to retrieve data.
     * The current contents of the rowset are discarded, and the
     * rowset's metadata is also (re)set.  If there are outstanding updates,
     * they are also ignored.
     * <P>
     * The method <code>execute</code> closes any database connections that it
     * creates.
     *
     * @throws SQLException if an error occurs or the
     *                         necessary properties have not been set
     */
    public void execute() throws SQLException {
        execute(null);
    }



    //-----------------------------------
    // Methods inherited from ResultSet
    //-----------------------------------

    /**
     * Moves the cursor down one row from its current position and
     * returns <code>true</code> if the new cursor position is a
     * valid row.
     * The cursor for a new <code>ResultSet</code> object is initially
     * positioned before the first row. The first call to the method
     * <code>next</code> moves the cursor to the first row, making it
     * the current row; the second call makes the second row the
     * current row, and so on.
     *
     * <P>If an input stream from the previous row is open, it is
     * implicitly closed. The <code>ResultSet</code> object's warning
     * chain is cleared when a new row is read.
     *
     * @return <code>true</code> if the new current row is valid;
     *         <code>false</code> if there are no more rows
     * @throws SQLException if an error occurs or
     *            the cursor is not positioned in the rowset, before
     *            the first row, or after the last row
     */
    public boolean next() throws SQLException {
        /*
         * make sure things look sane. The cursor must be
         * positioned in the rowset or before first (0) or
         * after last (numRows + 1)
         */
        if (cursorPos < 0 || cursorPos >= numRows + 1) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }
        // now move and notify
        boolean ret = this.internalNext();
        notifyCursorMoved();

        return ret;
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the next
     * row and returns <code>true</code> if the cursor is still in the rowset;
     * returns <code>false</code> if the cursor has moved to the position after
     * the last row.
     * <P>
     * This method handles the cases where the cursor moves to a row that
     * has been deleted.
     * If this rowset shows deleted rows and the cursor moves to a row
     * that has been deleted, this method moves the cursor to the next
     * row until the cursor is on a row that has not been deleted.
     * <P>
     * The method <code>internalNext</code> is called by methods such as
     * <code>next</code>, <code>absolute</code>, and <code>relative</code>,
     * and, as its name implies, is only called internally.
     * <p>
     * This is a implementation only method and is not required as a standard
     * implementation of the <code>CachedRowSet</code> interface.
     *
     * @return <code>true</code> if the cursor is on a valid row in this
     *         rowset; <code>false</code> if it is after the last row
     * @throws SQLException if an error occurs
     */
    protected boolean internalNext() throws SQLException {
        boolean ret = false;

        do {
            if (cursorPos < numRows) {
                ++cursorPos;
                ret = true;
            } else if (cursorPos == numRows) {
                // increment to after last
                ++cursorPos;
                ret = false;
                break;
            }
        } while ((getShowDeleted() == false) && (rowDeleted() == true));

        /* each call to internalNext may increment cursorPos multiple
         * times however, the absolutePos only increments once per call.
         */
        if (ret == true)
            absolutePos++;
        else
            absolutePos = 0;

        return ret;
    }

    /**
     * Closes this <code>CachedRowSetImpl</code> objecy and releases any resources
     * it was using.
     *
     * @throws SQLException if an error occurs when releasing any resources in use
     * by this <code>CachedRowSetImpl</code> object
     */
    public void close() throws SQLException {

        // close all data structures holding
        // the disconnected rowset

        cursorPos = 0;
        absolutePos = 0;
        numRows = 0;
        numDeleted = 0;

        // set all insert(s), update(s) & delete(s),
        // if at all, to their initial values.
        initProperties();

        // clear the vector of it's present contents
        rvh.clear();

        // this will make it eligible for gc
        // rvh = null;
    }

    /**
     * Reports whether the last column read was SQL <code>NULL</code>.
     * Note that you must first call the method <code>getXXX</code>
     * on a column to try to read its value and then call the method
     * <code>wasNull</code> to determine whether the value was
     * SQL <code>NULL</code>.
     *
     * @return <code>true</code> if the value in the last column read
     *         was SQL <code>NULL</code>; <code>false</code> otherwise
     * @throws SQLException if an error occurs
     */
    public boolean wasNull() throws SQLException {
        return lastValueNull;
    }

    /**
     * Sets the field <code>lastValueNull</code> to the given
     * <code>boolean</code> value.
     *
     * @param value <code>true</code> to indicate that the value of
     *        the last column read was SQL <code>NULL</code>;
     *        <code>false</code> to indicate that it was not
     */
    private void setLastValueNull(boolean value) {
        lastValueNull = value;
    }

    // Methods for accessing results by column index

    /**
     * Checks to see whether the given index is a valid column number
     * in this <code>CachedRowSetImpl</code> object and throws
     * an <code>SQLException</code> if it is not. The index is out of bounds
     * if it is less than <code>1</code> or greater than the number of
     * columns in this rowset.
     * <P>
     * This method is called internally by the <code>getXXX</code> and
     * <code>updateXXX</code> methods.
     *
     * @param idx the number of a column in this <code>CachedRowSetImpl</code>
     *            object; must be between <code>1</code> and the number of
     *            rows in this rowset
     * @throws SQLException if the given index is out of bounds
     */
    private void checkIndex(int idx) throws SQLException {
        if (idx < 1 || idx > RowSetMD.getColumnCount()) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcol").toString());
        }
    }

    /**
     * Checks to see whether the cursor for this <code>CachedRowSetImpl</code>
     * object is on a row in the rowset and throws an
     * <code>SQLException</code> if it is not.
     * <P>
     * This method is called internally by <code>getXXX</code> methods, by
     * <code>updateXXX</code> methods, and by methods that update, insert,
     * or delete a row or that cancel a row update, insert, or delete.
     *
     * @throws SQLException if the cursor for this <code>CachedRowSetImpl</code>
     *         object is not on a valid row
     */
    private void checkCursor() throws SQLException {
        if (isAfterLast() == true || isBeforeFirst() == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }
    }

    /**
     * Returns the column number of the column with the given name in this
     * <code>CachedRowSetImpl</code> object.  This method throws an
     * <code>SQLException</code> if the given name is not the name of
     * one of the columns in this rowset.
     *
     * @param name a <code>String</code> object that is the name of a column in
     *              this <code>CachedRowSetImpl</code> object
     * @throws SQLException if the given name does not match the name of one of
     *         the columns in this rowset
     */
    private int getColIdxByName(String name) throws SQLException {
        RowSetMD = (RowSetMetaDataImpl)this.getMetaData();
        int cols = RowSetMD.getColumnCount();

        for (int i=1; i <= cols; ++i) {
            String colName = RowSetMD.getColumnName(i);
            if (colName != null)
                if (name.equalsIgnoreCase(colName))
                    return (i);
                else
                    continue;
        }
        throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalcolnm").toString());

    }

    /**
     * Returns the insert row or the current row of this
     * <code>CachedRowSetImpl</code>object.
     *
     * @return the <code>Row</code> object on which this <code>CachedRowSetImpl</code>
     * objects's cursor is positioned
     */
    protected BaseRow getCurrentRow() {
        if (onInsertRow == true) {
            return (BaseRow)insertRow;
        } else {
            return (BaseRow)(rvh.get(cursorPos - 1));
        }
    }

    /**
     * Removes the row on which the cursor is positioned.
     * <p>
     * This is a implementation only method and is not required as a standard
     * implementation of the <code>CachedRowSet</code> interface.
     *
     * @throws SQLException if the cursor is positioned on the insert
     *            row
     */
    protected void removeCurrentRow() {
        ((Row)getCurrentRow()).setDeleted();
        rvh.remove(cursorPos - 1);
        --numRows;
    }


    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>String</code> object.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>null</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, INTEGER, BIGINT, REAL,
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, <b>CHAR</b>, <b>VARCHAR</b></code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     */
    public String getString(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value.toString();
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>boolean</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value as a <code>boolean</code> in the Java progamming language;
     *        if the value is SQL <code>NULL</code>, the result is <code>false</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code>BOOLEAN</code> value
     * @see #getBoolean(String)
     */
    public boolean getBoolean(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return false;
        }

        // check for Boolean...
        if (value instanceof Boolean) {
            return ((Boolean)value).booleanValue();
        }

        // convert to a Double and compare to zero
        try {
            return Double.compare(Double.parseDouble(value.toString()), 0) != 0;
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.boolfail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>byte</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value as a <code>byte</code> in the Java programming
     * language; if the value is SQL <code>NULL</code>, the result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code><b>TINYINT</b>, SMALLINT, INTEGER, BIGINT, REAL,
     *            FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     *            or <code>LONGVARCHAR</code> value. The bold SQL type
     *            designates the recommended return type.
     * @see #getByte(String)
     */
    public byte getByte(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (byte)0;
        }
        try {
            return ((Byte.valueOf(value.toString())).byteValue());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.bytefail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>short</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, <b>SMALLINT</b>, INTEGER, BIGINT, REAL
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     * @see #getShort(String)
     */
    public short getShort(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (short)0;
        }

        try {
            return ((Short.valueOf(value.toString().trim())).shortValue());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.shortfail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as an
     * <code>int</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, <b>INTEGER</b>, BIGINT, REAL
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     */
    public int getInt(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return 0;
        }

        try {
            return ((Integer.valueOf(value.toString().trim())).intValue());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.intfail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>long</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, INTEGER, <b>BIGINT</b>, REAL
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     * @see #getLong(String)
     */
    public long getLong(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (long)0;
        }
        try {
            return ((Long.valueOf(value.toString().trim())).longValue());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.longfail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>float</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, INTEGER, BIGINT, <b>REAL</b>,
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     * @see #getFloat(String)
     */
    public float getFloat(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (float)0;
        }
        try {
            return Float.parseFloat(value.toString());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.floatfail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>double</code> value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>0</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, INTEGER, BIGINT, REAL,
     * <b>FLOAT</b>, <b>DOUBLE</b>, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     * @see #getDouble(String)
     *
     */
    public double getDouble(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (double)0;
        }
        try {
            return Double.parseDouble(value.toString().trim());
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.doublefail").toString(),
                  new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.math.BigDecimal</code> object.
     * <P>
     * This method is deprecated; use the version of <code>getBigDecimal</code>
     * that does not take a scale parameter and returns a value with full
     * precision.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @param scale the number of digits to the right of the decimal point in the
     *        value returned
     * @return the column value with the specified number of digits to the right
     *         of the decimal point; if the value is SQL <code>NULL</code>, the
     *         result is <code>null</code>
     * @throws SQLException if the given column index is out of bounds,
     *            the cursor is not on a valid row, or this method fails
     * @deprecated
     */
    @Deprecated
    public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException {
        Object value;
        BigDecimal bDecimal, retVal;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return (new BigDecimal(0));
        }

        bDecimal = this.getBigDecimal(columnIndex);

        retVal = bDecimal.setScale(scale);

        return retVal;
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>byte</code> array value.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value as a <code>byte</code> array in the Java programming
     * language; if the value is SQL <code>NULL</code>, the
     * result is <code>null</code>
     *
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code><b>BINARY</b>, <b>VARBINARY</b> or
     * LONGVARBINARY</code> value.
     * The bold SQL type designates the recommended return type.
     * @see #getBytes(String)
     */
    public byte[] getBytes(int columnIndex) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        return (byte[])(getCurrentRow().getColumnObject(columnIndex));
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.sql.Date</code> object.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value as a <code>java.sql.Data</code> object; if
     *        the value is SQL <code>NULL</code>, the
     *        result is <code>null</code>
     * @throws SQLException if the given column index is out of bounds,
     *            the cursor is not on a valid row, or this method fails
     */
    public java.sql.Date getDate(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        /*
         * The object coming back from the db could be
         * a date, a timestamp, or a char field variety.
         * If it's a date type return it, a timestamp
         * we turn into a long and then into a date,
         * char strings we try to parse. Yuck.
         */
        switch (RowSetMD.getColumnType(columnIndex)) {
            case java.sql.Types.DATE: {
                long sec = ((java.sql.Date)value).getTime();
                return new java.sql.Date(sec);
            }
            case java.sql.Types.TIMESTAMP: {
                long sec = ((java.sql.Timestamp)value).getTime();
                return new java.sql.Date(sec);
            }
            case java.sql.Types.CHAR:
            case java.sql.Types.VARCHAR:
            case java.sql.Types.LONGVARCHAR: {
                try {
                    DateFormat df = DateFormat.getDateInstance();
                    return ((java.sql.Date)(df.parse(value.toString())));
                } catch (ParseException ex) {
                    throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.datefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
                }
            }
            default: {
                throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.datefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
            }
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.sql.Time</code> object.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>null</code>
     * @throws SQLException if the given column index is out of bounds,
     *         the cursor is not on a valid row, or this method fails
     */
    public java.sql.Time getTime(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        /*
         * The object coming back from the db could be
         * a date, a timestamp, or a char field variety.
         * If it's a date type return it, a timestamp
         * we turn into a long and then into a date,
         * char strings we try to parse. Yuck.
         */
        switch (RowSetMD.getColumnType(columnIndex)) {
            case java.sql.Types.TIME: {
                return (java.sql.Time)value;
            }
            case java.sql.Types.TIMESTAMP: {
                long sec = ((java.sql.Timestamp)value).getTime();
                return new java.sql.Time(sec);
            }
            case java.sql.Types.CHAR:
            case java.sql.Types.VARCHAR:
            case java.sql.Types.LONGVARCHAR: {
                try {
                    DateFormat tf = DateFormat.getTimeInstance();
                    return ((java.sql.Time)(tf.parse(value.toString())));
                } catch (ParseException ex) {
                    throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.timefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
                }
            }
            default: {
                throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.timefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
            }
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.sql.Timestamp</code> object.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return the column value; if the value is SQL <code>NULL</code>, the
     *         result is <code>null</code>
     * @throws SQLException if the given column index is out of bounds,
     *            the cursor is not on a valid row, or this method fails
     */
    public java.sql.Timestamp getTimestamp(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        /*
         * The object coming back from the db could be
         * a date, a timestamp, or a char field variety.
         * If it's a date type return it; a timestamp
         * we turn into a long and then into a date;
         * char strings we try to parse. Yuck.
         */
        switch (RowSetMD.getColumnType(columnIndex)) {
            case java.sql.Types.TIMESTAMP: {
                return (java.sql.Timestamp)value;
            }
            case java.sql.Types.TIME: {
                long sec = ((java.sql.Time)value).getTime();
                return new java.sql.Timestamp(sec);
            }
            case java.sql.Types.DATE: {
                long sec = ((java.sql.Date)value).getTime();
                return new java.sql.Timestamp(sec);
            }
            case java.sql.Types.CHAR:
            case java.sql.Types.VARCHAR:
            case java.sql.Types.LONGVARCHAR: {
                try {
                    DateFormat tf = DateFormat.getTimeInstance();
                    return ((java.sql.Timestamp)(tf.parse(value.toString())));
                } catch (ParseException ex) {
                    throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.timefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
                }
            }
            default: {
                throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.timefail").toString(),
                        new Object[] {value.toString().trim(), columnIndex}));
            }
        }
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>CachedRowSetImpl</code> object as a <code>java.io.InputStream</code>
     * object.
     *
     * A column value can be retrieved as a stream of ASCII characters
     * and then read in chunks from the stream.  This method is particularly
     * suitable for retrieving large <code>LONGVARCHAR</code> values.  The JDBC
     * driver will do any necessary conversion from the database format into ASCII.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a get method implicitly closes the stream. . Also, a
     * stream may return <code>0</code> for <code>CachedRowSetImpl.available()</code>
     * whether there is data available or not.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return a Java input stream that delivers the database column value
     *         as a stream of one-byte ASCII characters.  If the value is SQL
     *         <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>CHAR, VARCHAR</code>, <code><b>LONGVARCHAR</b></code>
     * <code>BINARY, VARBINARY</code> or <code>LONGVARBINARY</code> value. The
     * bold SQL type designates the recommended return types that this method is
     * used to retrieve.
     * @see #getAsciiStream(String)
     */
    public java.io.InputStream getAsciiStream(int columnIndex) throws SQLException {
        Object value;

        // always free an old stream
        asciiStream = null;

        // sanity check
        checkIndex(columnIndex);
        //make sure the cursor is on a vlid row
        checkCursor();

        value =  getCurrentRow().getColumnObject(columnIndex);
        if (value == null) {
            lastValueNull = true;
            return null;
        }

        try {
            if (isString(RowSetMD.getColumnType(columnIndex))) {
                asciiStream = new ByteArrayInputStream(((String)value).getBytes("ASCII"));
            } else {
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
            }
        } catch (java.io.UnsupportedEncodingException ex) {
            throw new SQLException(ex.getMessage());
        }

        return asciiStream;
    }

    /**
     * A column value can be retrieved as a stream of Unicode characters
     * and then read in chunks from the stream.  This method is particularly
     * suitable for retrieving large LONGVARCHAR values.  The JDBC driver will
     * do any necessary conversion from the database format into Unicode.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a get method implicitly closes the stream. . Also, a
     * stream may return 0 for available() whether there is data
     * available or not.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return a Java input stream that delivers the database column value
     * as a stream of two byte Unicode characters.  If the value is SQL NULL
     * then the result is null.
     * @throws SQLException if an error occurs
     * @deprecated
     */
    @Deprecated
    public java.io.InputStream getUnicodeStream(int columnIndex) throws SQLException {
        // always free an old stream
        unicodeStream = null;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex)) == false &&
        isString(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        Object value = getCurrentRow().getColumnObject(columnIndex);
        if (value == null) {
            lastValueNull = true;
            return null;
        }

        unicodeStream = new StringBufferInputStream(value.toString());

        return unicodeStream;
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>CachedRowSetImpl</code> object as a <code>java.io.InputStream</code>
     * object.
     * <P>
     * A column value can be retrieved as a stream of uninterpreted bytes
     * and then read in chunks from the stream.  This method is particularly
     * suitable for retrieving large <code>LONGVARBINARY</code> values.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a get method implicitly closes the stream. Also, a
     * stream may return <code>0</code> for
     * <code>CachedRowSetImpl.available()</code> whether there is data
     * available or not.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     * is <code>2</code>, and so on; must be <code>1</code> or larger
     * and equal to or less than the number of columns in the rowset
     * @return a Java input stream that delivers the database column value
     * as a stream of uninterpreted bytes.  If the value is SQL <code>NULL</code>
     * then the result is <code>null</code>.
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>BINARY, VARBINARY</code> or <code><b>LONGVARBINARY</b></code>
     * The bold type indicates the SQL type that this method is recommened
     * to retrieve.
     * @see #getBinaryStream(String)
     */
    public java.io.InputStream getBinaryStream(int columnIndex) throws SQLException {

        // always free an old stream
        binaryStream = null;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        Object value = getCurrentRow().getColumnObject(columnIndex);
        if (value == null) {
            lastValueNull = true;
            return null;
        }

        binaryStream = new ByteArrayInputStream((byte[])value);

        return binaryStream;

    }


    // Methods for accessing results by column name

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>String</code> object.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL {@code TINYINT, SMALLINT, INTEGER
     * BIGINT, REAL, FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, }
     * <b>{@code CHAR, VARCHAR}</b> or
     * <b>{@code LONGVARCHAR}</b> value.
     * The bold SQL type designates the recommended return type.
     */
    public String getString(String columnName) throws SQLException {
        return getString(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>boolean</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value as a <code>boolean</code> in the Java programming
     *        language; if the value is SQL <code>NULL</code>,
     *        the result is <code>false</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>BOOLEAN</code> value
     * @see #getBoolean(int)
     */
    public boolean getBoolean(String columnName) throws SQLException {
        return getBoolean(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>byte</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value as a <code>byte</code> in the Java programming
     * language; if the value is SQL <code>NULL</code>, the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code><B>TINYINT</B>, SMALLINT, INTEGER,
     * BIGINT, REAL, FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The
     * bold type designates the recommended return type
     */
    public byte getByte(String columnName) throws SQLException {
        return getByte(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>short</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, <b>SMALLINT</b>, INTEGER
     * BIGINT, REAL, FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return type.
     * @see #getShort(int)
     */
    public short getShort(String columnName) throws SQLException {
        return getShort(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as an <code>int</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name
     * of a column in this rowset,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, <b>INTEGER</b>, BIGINT, REAL
     * FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return type.
     */
    public int getInt(String columnName) throws SQLException {
        return getInt(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>long</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, SMALLINT, INTEGER
     * <b>BIGINT</b>, REAL, FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return type.
     * @see #getLong(int)
     */
    public long getLong(String columnName) throws SQLException {
        return getLong(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>float</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, SMALLINT, INTEGER
     * BIGINT, <b>REAL</b>, FLOAT, DOUBLE, DECIMAL, NUMERIC, BIT, CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return type.
     * @see #getFloat(String)
     */
    public float getFloat(String columnName) throws SQLException {
        return getFloat(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row of this <code>CachedRowSetImpl</code> object
     * as a <code>double</code> value.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>0</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, SMALLINT, INTEGER
     * BIGINT, REAL, <b>FLOAT</b>, <b>DOUBLE</b>, DECIMAL, NUMERIC, BIT, CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return types.
     * @see #getDouble(int)
     */
    public double getDouble(String columnName) throws SQLException {
        return getDouble(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.math.BigDecimal</code> object.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @param scale the number of digits to the right of the decimal point
     * @return a java.math.BugDecimal object with <code><i>scale</i></code>
     * number of digits to the right of the decimal point.
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, SMALLINT, INTEGER
     * BIGINT, REAL, FLOAT, DOUBLE, <b>DECIMAL</b>, <b>NUMERIC</b>, BIT CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return type that this method is used to
     * retrieve.
     * @deprecated Use the <code>getBigDecimal(String columnName)</code>
     *             method instead
     */
    @Deprecated
    public BigDecimal getBigDecimal(String columnName, int scale) throws SQLException {
        return getBigDecimal(getColIdxByName(columnName), scale);
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>byte</code> array.
     * The bytes represent the raw values returned by the driver.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value as a <code>byte</code> array in the Java programming
     * language; if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code><b>BINARY</b>, <b>VARBINARY</b>
     * </code> or <code>LONGVARBINARY</code> values
     * The bold SQL type designates the recommended return type.
     * @see #getBytes(int)
     */
    public byte[] getBytes(String columnName) throws SQLException {
        return getBytes(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.sql.Date</code> object.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>DATE</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Date getDate(String columnName) throws SQLException {
        return getDate(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.sql.Time</code> object.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if the given column name does not match one of
     *            this rowset's column names or the cursor is not on one of
     *            this rowset's rows or its insert row
     */
    public java.sql.Time getTime(String columnName) throws SQLException {
        return getTime(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.sql.Timestamp</code> object.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if the given column name does not match one of
     *            this rowset's column names or the cursor is not on one of
     *            this rowset's rows or its insert row
     */
    public java.sql.Timestamp getTimestamp(String columnName) throws SQLException {
        return getTimestamp(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>CachedRowSetImpl</code> object as a <code>java.io.InputStream</code>
     * object.
     *
     * A column value can be retrieved as a stream of ASCII characters
     * and then read in chunks from the stream. This method is particularly
     * suitable for retrieving large <code>LONGVARCHAR</code> values. The
     * <code>SyncProvider</code> will rely on the JDBC driver to do any necessary
     * conversion from the database format into ASCII format.
     *
     * <P><B>Note:</B> All the data in the returned stream must
     * be read prior to getting the value of any other column. The
     * next call to a <code>getXXX</code> method implicitly closes the stream.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return a Java input stream that delivers the database column value
     *         as a stream of one-byte ASCII characters.  If the value is SQL
     *         <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>CHAR, VARCHAR</code>, <code><b>LONGVARCHAR</b></code>
     * <code>BINARY, VARBINARY</code> or <code>LONGVARBINARY</code> value. The
     * bold SQL type designates the recommended return types that this method is
     * used to retrieve.
     * @see #getAsciiStream(int)
     */
    public java.io.InputStream getAsciiStream(String columnName) throws SQLException {
        return getAsciiStream(getColIdxByName(columnName));

    }

    /**
     * A column value can be retrieved as a stream of Unicode characters
     * and then read in chunks from the stream.  This method is particularly
     * suitable for retrieving large <code>LONGVARCHAR</code> values.
     * The JDBC driver will do any necessary conversion from the database
     * format into Unicode.
     *
     * <P><B>Note:</B> All the data in the returned stream must
     * be read prior to getting the value of any other column. The
     * next call to a <code>getXXX</code> method implicitly closes the stream.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return a Java input stream that delivers the database column value
     *         as a stream of two-byte Unicode characters.  If the value is
     *         SQL <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if the given column name does not match one of
     *            this rowset's column names or the cursor is not on one of
     *            this rowset's rows or its insert row
     * @deprecated use the method <code>getCharacterStream</code> instead
     */
    @Deprecated
    public java.io.InputStream getUnicodeStream(String columnName) throws SQLException {
        return getUnicodeStream(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>CachedRowSetImpl</code> object as a <code>java.io.InputStream</code>
     * object.
     * <P>
     * A column value can be retrieved as a stream of uninterpreted bytes
     * and then read in chunks from the stream.  This method is particularly
     * suitable for retrieving large <code>LONGVARBINARY</code> values.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a get method implicitly closes the stream. Also, a
     * stream may return <code>0</code> for <code>CachedRowSetImpl.available()</code>
     * whether there is data available or not.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return a Java input stream that delivers the database column value
     *         as a stream of uninterpreted bytes.  If the value is SQL
     *         <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if (1) the given column name is unknown,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>BINARY, VARBINARY</code> or <code><b>LONGVARBINARY</b></code>
     * The bold type indicates the SQL type that this method is recommened
     * to retrieve.
     * @see #getBinaryStream(int)
     *
     */
    public java.io.InputStream getBinaryStream(String columnName) throws SQLException {
        return getBinaryStream(getColIdxByName(columnName));
    }


    // Advanced features:

    /**
     * The first warning reported by calls on this <code>CachedRowSetImpl</code>
     * object is returned. Subsequent <code>CachedRowSetImpl</code> warnings will
     * be chained to this <code>SQLWarning</code>.
     *
     * <P>The warning chain is automatically cleared each time a new
     * row is read.
     *
     * <P><B>Note:</B> This warning chain only covers warnings caused
     * by <code>ResultSet</code> methods.  Any warning caused by statement
     * methods (such as reading OUT parameters) will be chained on the
     * <code>Statement</code> object.
     *
     * @return the first SQLWarning or null
     */
    public SQLWarning getWarnings() {
        return sqlwarn;
    }

    /**
     * Clears all the warnings reporeted for the <code>CachedRowSetImpl</code>
     * object. After a call to this method, the <code>getWarnings</code> method
     * returns <code>null</code> until a new warning is reported for this
     * <code>CachedRowSetImpl</code> object.
     */
    public void clearWarnings() {
        sqlwarn = null;
    }

    /**
     * Retrieves the name of the SQL cursor used by this
     * <code>CachedRowSetImpl</code> object.
     *
     * <P>In SQL, a result table is retrieved through a cursor that is
     * named. The current row of a <code>ResultSet</code> can be updated or deleted
     * using a positioned update/delete statement that references the
     * cursor name. To ensure that the cursor has the proper isolation
     * level to support an update operation, the cursor's <code>SELECT</code>
     * statement should be of the form <code>select for update</code>.
     * If the <code>for update</code> clause
     * is omitted, positioned updates may fail.
     *
     * <P>JDBC supports this SQL feature by providing the name of the
     * SQL cursor used by a <code>ResultSet</code> object. The current row
     * of a result set is also the current row of this SQL cursor.
     *
     * <P><B>Note:</B> If positioned updates are not supported, an
     * <code>SQLException</code> is thrown.
     *
     * @return the SQL cursor name for this <code>CachedRowSetImpl</code> object's
     *         cursor
     * @throws SQLException if an error occurs
     */
    public String getCursorName() throws SQLException {
        throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.posupdate").toString());
    }

    /**
     * Retrieves a <code>ResultSetMetaData</code> object instance that
     * contains information about the <code>CachedRowSet</code> object.
     * However, applications should cast the returned object to a
     * <code>RowSetMetaData</code> interface implementation. In the
     * reference implementation, this cast can be done on the
     * <code>RowSetMetaDataImpl</code> class.
     * <P>
     * For example:
     * <pre>
     * CachedRowSet crs = new CachedRowSetImpl();
     * RowSetMetaDataImpl metaData =
     *     (RowSetMetaDataImpl)crs.getMetaData();
     * // Set the number of columns in the RowSet object for
     * // which this RowSetMetaDataImpl object was created to the
     * // given number.
     * metaData.setColumnCount(3);
     * crs.setMetaData(metaData);
     * </pre>
     *
     * @return the <code>ResultSetMetaData</code> object that describes this
     *         <code>CachedRowSetImpl</code> object's columns
     * @throws SQLException if an error occurs in generating the RowSet
     * meta data; or if the <code>CachedRowSetImpl</code> is empty.
     * @see javax.sql.RowSetMetaData
     */
    public ResultSetMetaData getMetaData() throws SQLException {
        return (ResultSetMetaData)RowSetMD;
    }


    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as an
     * <code>Object</code> value.
     * <P>
     * The type of the <code>Object</code> will be the default
     * Java object type corresponding to the column's SQL type,
     * following the mapping for built-in types specified in the JDBC 3.0
     * specification.
     * <P>
     * This method may also be used to read datatabase-specific
     * abstract data types.
     * <P>
     * This implementation of the method <code>getObject</code> extends its
     * behavior so that it gets the attributes of an SQL structured type
     * as an array of <code>Object</code> values.  This method also custom
     * maps SQL user-defined types to classes in the Java programming language.
     * When the specified column contains
     * a structured or distinct value, the behavior of this method is as
     * if it were a call to the method <code>getObject(columnIndex,
     * this.getStatement().getConnection().getTypeMap())</code>.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return a <code>java.lang.Object</code> holding the column value;
     *         if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @throws SQLException if the given column index is out of bounds,
     *            the cursor is not on a valid row, or there is a problem getting
     *            the <code>Class</code> object for a custom mapping
     * @see #getObject(String)
     */
    public Object getObject(int columnIndex) throws SQLException {
        Object value;
        Map<String, Class<?>> map;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }
        if (value instanceof Struct) {
            Struct s = (Struct)value;
            map = getTypeMap();
            // look up the class in the map
            Class<?> c = map.get(s.getSQLTypeName());
            if (c != null) {
                // create new instance of the class
                SQLData obj = null;
                try {
                    ReflectUtil.checkPackageAccess(c);
                    @SuppressWarnings("deprecation")
                    Object tmp = c.newInstance();
                    obj = (SQLData) tmp;
                } catch(Exception ex) {
                    throw new SQLException("Unable to Instantiate: ", ex);
                }
                // get the attributes from the struct
                Object attribs[] = s.getAttributes(map);
                // create the SQLInput "stream"
                SQLInputImpl sqlInput = new SQLInputImpl(attribs, map);
                // read the values...
                obj.readSQL(sqlInput, s.getSQLTypeName());
                return (Object)obj;
            }
        }
        return value;
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as an
     * <code>Object</code> value.
     * <P>
     * The type of the <code>Object</code> will be the default
     * Java object type corresponding to the column's SQL type,
     * following the mapping for built-in types specified in the JDBC 3.0
     * specification.
     * <P>
     * This method may also be used to read datatabase-specific
     * abstract data types.
     * <P>
     * This implementation of the method <code>getObject</code> extends its
     * behavior so that it gets the attributes of an SQL structured type
     * as an array of <code>Object</code> values.  This method also custom
     * maps SQL user-defined types to classes
     * in the Java programming language. When the specified column contains
     * a structured or distinct value, the behavior of this method is as
     * if it were a call to the method <code>getObject(columnIndex,
     * this.getStatement().getConnection().getTypeMap())</code>.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return a <code>java.lang.Object</code> holding the column value;
     *         if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @throws SQLException if (1) the given column name does not match one of
     *            this rowset's column names, (2) the cursor is not
     *            on a valid row, or (3) there is a problem getting
     *            the <code>Class</code> object for a custom mapping
     * @see #getObject(int)
     */
    public Object getObject(String columnName) throws SQLException {
        return getObject(getColIdxByName(columnName));
    }

    //----------------------------------------------------------------

    /**
     * Maps the given column name for one of this <code>CachedRowSetImpl</code>
     * object's columns to its column number.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return the column index of the given column name
     * @throws SQLException if the given column name does not match one
     *            of this rowset's column names
     */
    public int findColumn(String columnName) throws SQLException {
        return getColIdxByName(columnName);
    }


    //--------------------------JDBC 2.0-----------------------------------

    //---------------------------------------------------------------------
    // Getter's and Setter's
    //---------------------------------------------------------------------

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.io.Reader</code> object.
     *
     * <P><B>Note:</B> All the data in the returned stream must
     * be read prior to getting the value of any other column. The
     * next call to a <code>getXXX</code> method implicitly closes the stream.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return a Java character stream that delivers the database column value
     * as a stream of two-byte unicode characters in a
     * <code>java.io.Reader</code> object.  If the value is
     * SQL <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>CHAR, VARCHAR, <b>LONGVARCHAR</b>, BINARY, VARBINARY</code> or
     * <code>LONGVARBINARY</code> value.
     * The bold SQL type designates the recommended return type.
     * @see #getCharacterStream(String)
     */
    public java.io.Reader getCharacterStream(int columnIndex) throws SQLException{

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex))) {
            Object value = getCurrentRow().getColumnObject(columnIndex);
            if (value == null) {
                lastValueNull = true;
                return null;
            }
            charStream = new InputStreamReader
            (new ByteArrayInputStream((byte[])value));
        } else if (isString(RowSetMD.getColumnType(columnIndex))) {
            Object value = getCurrentRow().getColumnObject(columnIndex);
            if (value == null) {
                lastValueNull = true;
                return null;
            }
            charStream = new StringReader(value.toString());
        } else {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        return charStream;
    }

    /**
     * Retrieves the value stored in the designated column
     * of the current row as a <code>java.io.Reader</code> object.
     *
     * <P><B>Note:</B> All the data in the returned stream must
     * be read prior to getting the value of any other column. The
     * next call to a <code>getXXX</code> method implicitly closes the stream.
     *
     * @param columnName a <code>String</code> object giving the SQL name of
     *        a column in this <code>CachedRowSetImpl</code> object
     * @return a Java input stream that delivers the database column value
     *         as a stream of two-byte Unicode characters.  If the value is
     *         SQL <code>NULL</code>, the result is <code>null</code>.
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>CHAR, VARCHAR, <b>LONGVARCHAR</b>,
     * BINARY, VARYBINARY</code> or <code>LONGVARBINARY</code> value.
     * The bold SQL type designates the recommended return type.
     */
    public java.io.Reader getCharacterStream(String columnName) throws SQLException {
        return getCharacterStream(getColIdxByName(columnName));
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.math.BigDecimal</code> object.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @return a <code>java.math.BigDecimal</code> value with full precision;
     *         if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>TINYINT, SMALLINT, INTEGER, BIGINT, REAL,
     * FLOAT, DOUBLE, <b>DECIMAL</b>, <b>NUMERIC</b>, BIT, CHAR, VARCHAR</code>
     * or <code>LONGVARCHAR</code> value. The bold SQL type designates the
     * recommended return types that this method is used to retrieve.
     * @see #getBigDecimal(String)
     */
    public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }
        try {
            return (new BigDecimal(value.toString().trim()));
        } catch (NumberFormatException ex) {
            throw new SQLException(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.doublefail").toString(),
                new Object[] {value.toString().trim(), columnIndex}));
        }
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.math.BigDecimal</code> object.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return a <code>java.math.BigDecimal</code> value with full precision;
     *         if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     * a column in this rowset, (2) the cursor is not on one of
     * this rowset's rows or its insert row, or (3) the designated
     * column does not store an SQL <code>TINYINT, SMALLINT, INTEGER
     * BIGINT, REAL, FLOAT, DOUBLE, <b>DECIMAL</b>, <b>NUMERIC</b>, BIT CHAR,
     * VARCHAR</code> or <code>LONGVARCHAR</code> value. The bold SQL type
     * designates the recommended return type that this method is used to
     * retrieve
     * @see #getBigDecimal(int)
     */
    public BigDecimal getBigDecimal(String columnName) throws SQLException {
        return getBigDecimal(getColIdxByName(columnName));
    }

    //---------------------------------------------------------------------
    // Traversal/Positioning
    //---------------------------------------------------------------------

    /**
     * Returns the number of rows in this <code>CachedRowSetImpl</code> object.
     *
     * @return number of rows in the rowset
     */
    public int size() {
        return numRows;
    }

    /**
     * Indicates whether the cursor is before the first row in this
     * <code>CachedRowSetImpl</code> object.
     *
     * @return <code>true</code> if the cursor is before the first row;
     *         <code>false</code> otherwise or if the rowset contains no rows
     * @throws SQLException if an error occurs
     */
    public boolean isBeforeFirst() throws SQLException {
        if (cursorPos == 0 && numRows > 0) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Indicates whether the cursor is after the last row in this
     * <code>CachedRowSetImpl</code> object.
     *
     * @return <code>true</code> if the cursor is after the last row;
     *         <code>false</code> otherwise or if the rowset contains no rows
     * @throws SQLException if an error occurs
     */
    public boolean isAfterLast() throws SQLException {
        if (cursorPos == numRows+1 && numRows > 0) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Indicates whether the cursor is on the first row in this
     * <code>CachedRowSetImpl</code> object.
     *
     * @return <code>true</code> if the cursor is on the first row;
     *         <code>false</code> otherwise or if the rowset contains no rows
     * @throws SQLException if an error occurs
     */
    public boolean isFirst() throws SQLException {
        // this becomes nasty because of deletes.
        int saveCursorPos = cursorPos;
        int saveAbsoluteCursorPos = absolutePos;
        internalFirst();
        if (cursorPos == saveCursorPos) {
            return true;
        } else {
            cursorPos = saveCursorPos;
            absolutePos = saveAbsoluteCursorPos;
            return false;
        }
    }

    /**
     * Indicates whether the cursor is on the last row in this
     * <code>CachedRowSetImpl</code> object.
     * <P>
     * Note: Calling the method <code>isLast</code> may be expensive
     * because the JDBC driver might need to fetch ahead one row in order
     * to determine whether the current row is the last row in this rowset.
     *
     * @return <code>true</code> if the cursor is on the last row;
     *         <code>false</code> otherwise or if this rowset contains no rows
     * @throws SQLException if an error occurs
     */
    public boolean isLast() throws SQLException {
        int saveCursorPos = cursorPos;
        int saveAbsoluteCursorPos = absolutePos;
        boolean saveShowDeleted = getShowDeleted();
        setShowDeleted(true);
        internalLast();
        if (cursorPos == saveCursorPos) {
            setShowDeleted(saveShowDeleted);
            return true;
        } else {
            setShowDeleted(saveShowDeleted);
            cursorPos = saveCursorPos;
            absolutePos = saveAbsoluteCursorPos;
            return false;
        }
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the front of
     * the rowset, just before the first row. This method has no effect if
     * this rowset contains no rows.
     *
     * @throws SQLException if an error occurs or the type of this rowset
     *            is <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public void beforeFirst() throws SQLException {
       if (getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.beforefirst").toString());
        }
        cursorPos = 0;
        absolutePos = 0;
        notifyCursorMoved();
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the end of
     * the rowset, just after the last row. This method has no effect if
     * this rowset contains no rows.
     *
     * @throws SQLException if an error occurs
     */
    public void afterLast() throws SQLException {
        if (numRows > 0) {
            cursorPos = numRows + 1;
            absolutePos = 0;
            notifyCursorMoved();
        }
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the first row
     * and returns <code>true</code> if the operation was successful.  This
     * method also notifies registered listeners that the cursor has moved.
     *
     * @return <code>true</code> if the cursor is on a valid row;
     *         <code>false</code> otherwise or if there are no rows in this
     *         <code>CachedRowSetImpl</code> object
     * @throws SQLException if the type of this rowset
     *            is <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public boolean first() throws SQLException {
        if(getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.first").toString());
        }

        // move and notify
        boolean ret = this.internalFirst();
        notifyCursorMoved();

        return ret;
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the first
     * row and returns <code>true</code> if the operation is successful.
     * <P>
     * This method is called internally by the methods <code>first</code>,
     * <code>isFirst</code>, and <code>absolute</code>.
     * It in turn calls the method <code>internalNext</code> in order to
     * handle the case where the first row is a deleted row that is not visible.
     * <p>
     * This is a implementation only method and is not required as a standard
     * implementation of the <code>CachedRowSet</code> interface.
     *
     * @return <code>true</code> if the cursor moved to the first row;
     *         <code>false</code> otherwise
     * @throws SQLException if an error occurs
     */
    protected boolean internalFirst() throws SQLException {
        boolean ret = false;

        if (numRows > 0) {
            cursorPos = 1;
            if ((getShowDeleted() == false) && (rowDeleted() == true)) {
                ret = internalNext();
            } else {
                ret = true;
            }
        }

        if (ret == true)
            absolutePos = 1;
        else
            absolutePos = 0;

        return ret;
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the last row
     * and returns <code>true</code> if the operation was successful.  This
     * method also notifies registered listeners that the cursor has moved.
     *
     * @return <code>true</code> if the cursor is on a valid row;
     *         <code>false</code> otherwise or if there are no rows in this
     *         <code>CachedRowSetImpl</code> object
     * @throws SQLException if the type of this rowset
     *            is <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public boolean last() throws SQLException {
        if (getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.last").toString());
        }

        // move and notify
        boolean ret = this.internalLast();
        notifyCursorMoved();

        return ret;
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the last
     * row and returns <code>true</code> if the operation is successful.
     * <P>
     * This method is called internally by the method <code>last</code>
     * when rows have been deleted and the deletions are not visible.
     * The method <code>internalLast</code> handles the case where the
     * last row is a deleted row that is not visible by in turn calling
     * the method <code>internalPrevious</code>.
     * <p>
     * This is a implementation only method and is not required as a standard
     * implementation of the <code>CachedRowSet</code> interface.
     *
     * @return <code>true</code> if the cursor moved to the last row;
     *         <code>false</code> otherwise
     * @throws SQLException if an error occurs
     */
    protected boolean internalLast() throws SQLException {
        boolean ret = false;

        if (numRows > 0) {
            cursorPos = numRows;
            if ((getShowDeleted() == false) && (rowDeleted() == true)) {
                ret = internalPrevious();
            } else {
                ret = true;
            }
        }
        if (ret == true)
            absolutePos = numRows - numDeleted;
        else
            absolutePos = 0;
        return ret;
    }

    /**
     * Returns the number of the current row in this <code>CachedRowSetImpl</code>
     * object. The first row is number 1, the second number 2, and so on.
     *
     * @return the number of the current row;  <code>0</code> if there is no
     *         current row
     * @throws SQLException if an error occurs; or if the <code>CacheRowSetImpl</code>
     *         is empty
     */
    public int getRow() throws SQLException {
        // are we on a valid row? Valid rows are between first and last
        if (numRows > 0 &&
        cursorPos > 0 &&
        cursorPos < (numRows + 1) &&
        (getShowDeleted() == false && rowDeleted() == false)) {
            return absolutePos;
        } else if (getShowDeleted() == true) {
            return cursorPos;
        } else {
            return 0;
        }
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the row number
     * specified.
     *
     * <p>If the number is positive, the cursor moves to an absolute row with
     * respect to the beginning of the rowset.  The first row is row 1, the second
     * is row 2, and so on.  For example, the following command, in which
     * <code>crs</code> is a <code>CachedRowSetImpl</code> object, moves the cursor
     * to the fourth row, starting from the beginning of the rowset.
     * <PRE><code>
     *
     *    crs.absolute(4);
     *
     * </code> </PRE>
     * <P>
     * If the number is negative, the cursor moves to an absolute row position
     * with respect to the end of the rowset.  For example, calling
     * <code>absolute(-1)</code> positions the cursor on the last row,
     * <code>absolute(-2)</code> moves it on the next-to-last row, and so on.
     * If the <code>CachedRowSetImpl</code> object <code>crs</code> has five rows,
     * the following command moves the cursor to the fourth-to-last row, which
     * in the case of a  rowset with five rows, is also the second row, counting
     * from the beginning.
     * <PRE><code>
     *
     *    crs.absolute(-4);
     *
     * </code> </PRE>
     *
     * If the number specified is larger than the number of rows, the cursor
     * will move to the position after the last row. If the number specified
     * would move the cursor one or more rows before the first row, the cursor
     * moves to the position before the first row.
     * <P>
     * Note: Calling <code>absolute(1)</code> is the same as calling the
     * method <code>first()</code>.  Calling <code>absolute(-1)</code> is the
     * same as calling <code>last()</code>.
     *
     * @param row a positive number to indicate the row, starting row numbering from
     *        the first row, which is <code>1</code>; a negative number to indicate
     *        the row, starting row numbering from the last row, which is
     *        <code>-1</code>; it must not be <code>0</code>
     * @return <code>true</code> if the cursor is on the rowset; <code>false</code>
     *         otherwise
     * @throws SQLException if the given cursor position is <code>0</code> or the
     *            type of this rowset is <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public boolean absolute( int row ) throws SQLException {
        if (row == 0 || getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.absolute").toString());
        }

        if (row > 0) { // we are moving foward
            if (row > numRows) {
                // fell off the end
                afterLast();
                return false;
            } else {
                if (absolutePos <= 0)
                    internalFirst();
            }
        } else { // we are moving backward
            if (cursorPos + row < 0) {
                // fell off the front
                beforeFirst();
                return false;
            } else {
                if (absolutePos >= 0)
                    internalLast();
            }
        }

        // Now move towards the absolute row that we're looking for
        while (absolutePos != row) {
            if (absolutePos < row) {
                if (!internalNext())
                    break;
            }
            else {
                if (!internalPrevious())
                    break;
            }
        }

        notifyCursorMoved();

        if (isAfterLast() || isBeforeFirst()) {
            return false;
        } else {
            return true;
        }
    }

    /**
     * Moves the cursor the specified number of rows from the current
     * position, with a positive number moving it forward and a
     * negative number moving it backward.
     * <P>
     * If the number is positive, the cursor moves the specified number of
     * rows toward the end of the rowset, starting at the current row.
     * For example, the following command, in which
     * <code>crs</code> is a <code>CachedRowSetImpl</code> object with 100 rows,
     * moves the cursor forward four rows from the current row.  If the
     * current row is 50, the cursor would move to row 54.
     * <PRE><code>
     *
     *    crs.relative(4);
     *
     * </code> </PRE>
     * <P>
     * If the number is negative, the cursor moves back toward the beginning
     * the specified number of rows, starting at the current row.
     * For example, calling the method
     * <code>absolute(-1)</code> positions the cursor on the last row,
     * <code>absolute(-2)</code> moves it on the next-to-last row, and so on.
     * If the <code>CachedRowSetImpl</code> object <code>crs</code> has five rows,
     * the following command moves the cursor to the fourth-to-last row, which
     * in the case of a  rowset with five rows, is also the second row
     * from the beginning.
     * <PRE><code>
     *
     *    crs.absolute(-4);
     *
     * </code> </PRE>
     *
     * If the number specified is larger than the number of rows, the cursor
     * will move to the position after the last row. If the number specified
     * would move the cursor one or more rows before the first row, the cursor
     * moves to the position before the first row. In both cases, this method
     * throws an <code>SQLException</code>.
     * <P>
     * Note: Calling <code>absolute(1)</code> is the same as calling the
     * method <code>first()</code>.  Calling <code>absolute(-1)</code> is the
     * same as calling <code>last()</code>.  Calling <code>relative(0)</code>
     * is valid, but it does not change the cursor position.
     *
     * @param rows an <code>int</code> indicating the number of rows to move
     *             the cursor, starting at the current row; a positive number
     *             moves the cursor forward; a negative number moves the cursor
     *             backward; must not move the cursor past the valid
     *             rows
     * @return <code>true</code> if the cursor is on a row in this
     *         <code>CachedRowSetImpl</code> object; <code>false</code>
     *         otherwise
     * @throws SQLException if there are no rows in this rowset, the cursor is
     *         positioned either before the first row or after the last row, or
     *         the rowset is type <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public boolean relative(int rows) throws SQLException {
        if (numRows == 0 || isBeforeFirst() ||
        isAfterLast() || getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.relative").toString());
        }

        if (rows == 0) {
            return true;
        }

        if (rows > 0) { // we are moving forward
            if (cursorPos + rows > numRows) {
                // fell off the end
                afterLast();
            } else {
                for (int i=0; i < rows; i++) {
                    if (!internalNext())
                        break;
                }
            }
        } else { // we are moving backward
            if (cursorPos + rows < 0) {
                // fell off the front
                beforeFirst();
            } else {
                for (int i=rows; i < 0; i++) {
                    if (!internalPrevious())
                        break;
                }
            }
        }
        notifyCursorMoved();

        if (isAfterLast() || isBeforeFirst()) {
            return false;
        } else {
            return true;
        }
    }

    /**
     * Moves this <code>CachedRowSetImpl</code> object's cursor to the
     * previous row and returns <code>true</code> if the cursor is on
     * a valid row or <code>false</code> if it is not.
     * This method also notifies all listeners registered with this
     * <code>CachedRowSetImpl</code> object that its cursor has moved.
     * <P>
     * Note: calling the method <code>previous()</code> is not the same
     * as calling the method <code>relative(-1)</code>.  This is true
     * because it is possible to call <code>previous()</code> from the insert
     * row, from after the last row, or from the current row, whereas
     * <code>relative</code> may only be called from the current row.
     * <P>
     * The method <code>previous</code> may used in a <code>while</code>
     * loop to iterate through a rowset starting after the last row
     * and moving toward the beginning. The loop ends when <code>previous</code>
     * returns <code>false</code>, meaning that there are no more rows.
     * For example, the following code fragment retrieves all the data in
     * the <code>CachedRowSetImpl</code> object <code>crs</code>, which has
     * three columns.  Note that the cursor must initially be positioned
     * after the last row so that the first call to the method
     * <code>previous</code> places the cursor on the last line.
     * <PRE> <code>
     *
     *     crs.afterLast();
     *     while (previous()) {
     *         String name = crs.getString(1);
     *         int age = crs.getInt(2);
     *         short ssn = crs.getShort(3);
     *         System.out.println(name + "   " + age + "   " + ssn);
     *     }
     *
     * </code> </PRE>
     * This method throws an <code>SQLException</code> if the cursor is not
     * on a row in the rowset, before the first row, or after the last row.
     *
     * @return <code>true</code> if the cursor is on a valid row;
     *         <code>false</code> if it is before the first row or after the
     *         last row
     * @throws SQLException if the cursor is not on a valid position or the
     *           type of this rowset is <code>ResultSet.TYPE_FORWARD_ONLY</code>
     */
    public boolean previous() throws SQLException {
        if (getType() == ResultSet.TYPE_FORWARD_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.last").toString());
        }
        /*
         * make sure things look sane. The cursor must be
         * positioned in the rowset or before first (0) or
         * after last (numRows + 1)
         */
        if (cursorPos < 0 || cursorPos > numRows + 1) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }
        // move and notify
        boolean ret = this.internalPrevious();
        notifyCursorMoved();

        return ret;
    }

    /**
     * Moves the cursor to the previous row in this <code>CachedRowSetImpl</code>
     * object, skipping past deleted rows that are not visible; returns
     * <code>true</code> if the cursor is on a row in this rowset and
     * <code>false</code> when the cursor goes before the first row.
     * <P>
     * This method is called internally by the method <code>previous</code>.
     * <P>
     * This is a implementation only method and is not required as a standard
     * implementation of the <code>CachedRowSet</code> interface.
     *
     * @return <code>true</code> if the cursor is on a row in this rowset;
     *         <code>false</code> when the cursor reaches the position before
     *         the first row
     * @throws SQLException if an error occurs
     */
    protected boolean internalPrevious() throws SQLException {
        boolean ret = false;

        do {
            if (cursorPos > 1) {
                --cursorPos;
                ret = true;
            } else if (cursorPos == 1) {
                // decrement to before first
                --cursorPos;
                ret = false;
                break;
            }
        } while ((getShowDeleted() == false) && (rowDeleted() == true));

        /*
         * Each call to internalPrevious may move the cursor
         * over multiple rows, the absolute position moves one row
         */
        if (ret == true)
            --absolutePos;
        else
            absolutePos = 0;

        return ret;
    }


    //---------------------------------------------------------------------
    // Updates
    //---------------------------------------------------------------------

    /**
     * Indicates whether the current row of this <code>CachedRowSetImpl</code>
     * object has been updated.  The value returned
     * depends on whether this rowset can detect updates: <code>false</code>
     * will always be returned if it does not detect updates.
     *
     * @return <code>true</code> if the row has been visibly updated
     *         by the owner or another and updates are detected;
     *         <code>false</code> otherwise
     * @throws SQLException if the cursor is on the insert row or not
     *            not on a valid row
     *
     * @see DatabaseMetaData#updatesAreDetected
     */
    public boolean rowUpdated() throws SQLException {
        // make sure the cursor is on a valid row
        checkCursor();
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());
        }
        return(((Row)getCurrentRow()).getUpdated());
    }

    /**
     * Indicates whether the designated column of the current row of
     * this <code>CachedRowSetImpl</code> object has been updated. The
     * value returned depends on whether this rowset can detcted updates:
     * <code>false</code> will always be returned if it does not detect updates.
     *
     * @param idx the index identifier of the column that may be have been updated.
     * @return <code>true</code> is the designated column has been updated
     * and the rowset detects updates; <code>false</code> if the rowset has not
     * been updated or the rowset does not detect updates
     * @throws SQLException if the cursor is on the insert row or not
     *          on a valid row
     * @see DatabaseMetaData#updatesAreDetected
     */
    public boolean columnUpdated(int idx) throws SQLException {
        // make sure the cursor is on a valid row
        checkCursor();
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());
        }
        return (((Row)getCurrentRow()).getColUpdated(idx - 1));
    }

    /**
     * Indicates whether the designated column of the current row of
     * this <code>CachedRowSetImpl</code> object has been updated. The
     * value returned depends on whether this rowset can detcted updates:
     * <code>false</code> will always be returned if it does not detect updates.
     *
     * @param columnName the <code>String</code> column name column that may be have
     * been updated.
     * @return <code>true</code> is the designated column has been updated
     * and the rowset detects updates; <code>false</code> if the rowset has not
     * been updated or the rowset does not detect updates
     * @throws SQLException if the cursor is on the insert row or not
     *          on a valid row
     * @see DatabaseMetaData#updatesAreDetected
     */
    public boolean columnUpdated(String columnName) throws SQLException {
        return columnUpdated(getColIdxByName(columnName));
    }

    /**
     * Indicates whether the current row has been inserted.  The value returned
     * depends on whether or not the rowset can detect visible inserts.
     *
     * @return <code>true</code> if a row has been inserted and inserts are detected;
     *         <code>false</code> otherwise
     * @throws SQLException if the cursor is on the insert row or not
     *            not on a valid row
     *
     * @see DatabaseMetaData#insertsAreDetected
     */
    public boolean rowInserted() throws SQLException {
        // make sure the cursor is on a valid row
        checkCursor();
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());
        }
        return(((Row)getCurrentRow()).getInserted());
    }

    /**
     * Indicates whether the current row has been deleted.  A deleted row
     * may leave a visible "hole" in a rowset.  This method can be used to
     * detect such holes if the rowset can detect deletions. This method
     * will always return <code>false</code> if this rowset cannot detect
     * deletions.
     *
     * @return <code>true</code> if (1)the current row is blank, indicating that
     *         the row has been deleted, and (2)deletions are detected;
     *         <code>false</code> otherwise
     * @throws SQLException if the cursor is on a valid row in this rowset
     * @see DatabaseMetaData#deletesAreDetected
     */
    public boolean rowDeleted() throws SQLException {
        // make sure the cursor is on a valid row

        if (isAfterLast() == true ||
        isBeforeFirst() == true ||
        onInsertRow == true) {

            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }
        return(((Row)getCurrentRow()).getDeleted());
    }

    /**
     * Indicates whether the given SQL data type is a numberic type.
     *
     * @param type one of the constants from <code>java.sql.Types</code>
     * @return <code>true</code> if the given type is <code>NUMERIC</code>,'
     *         <code>DECIMAL</code>, <code>BIT</code>, <code>TINYINT</code>,
     *         <code>SMALLINT</code>, <code>INTEGER</code>, <code>BIGINT</code>,
     *         <code>REAL</code>, <code>DOUBLE</code>, or <code>FLOAT</code>;
     *         <code>false</code> otherwise
     */
    private boolean isNumeric(int type) {
        switch (type) {
            case java.sql.Types.NUMERIC:
            case java.sql.Types.DECIMAL:
            case java.sql.Types.BIT:
            case java.sql.Types.TINYINT:
            case java.sql.Types.SMALLINT:
            case java.sql.Types.INTEGER:
            case java.sql.Types.BIGINT:
            case java.sql.Types.REAL:
            case java.sql.Types.DOUBLE:
            case java.sql.Types.FLOAT:
                return true;
            default:
                return false;
        }
    }

    /**
     * Indicates whether the given SQL data type is a string type.
     *
     * @param type one of the constants from <code>java.sql.Types</code>
     * @return <code>true</code> if the given type is <code>CHAR</code>,'
     *         <code>VARCHAR</code>, or <code>LONGVARCHAR</code>;
     *         <code>false</code> otherwise
     */
    private boolean isString(int type) {
        switch (type) {
            case java.sql.Types.CHAR:
            case java.sql.Types.VARCHAR:
            case java.sql.Types.LONGVARCHAR:
                return true;
            default:
                return false;
        }
    }

    /**
     * Indicates whether the given SQL data type is a binary type.
     *
     * @param type one of the constants from <code>java.sql.Types</code>
     * @return <code>true</code> if the given type is <code>BINARY</code>,'
     *         <code>VARBINARY</code>, or <code>LONGVARBINARY</code>;
     *         <code>false</code> otherwise
     */
    private boolean isBinary(int type) {
        switch (type) {
            case java.sql.Types.BINARY:
            case java.sql.Types.VARBINARY:
            case java.sql.Types.LONGVARBINARY:
                return true;
            default:
                return false;
        }
    }

    /**
     * Indicates whether the given SQL data type is a temporal type.
     * This method is called internally by the conversion methods
     * <code>convertNumeric</code> and <code>convertTemporal</code>.
     *
     * @param type one of the constants from <code>java.sql.Types</code>
     * @return <code>true</code> if the given type is <code>DATE</code>,
     *         <code>TIME</code>, or <code>TIMESTAMP</code>;
     *         <code>false</code> otherwise
     */
    private boolean isTemporal(int type) {
        switch (type) {
            case java.sql.Types.DATE:
            case java.sql.Types.TIME:
            case java.sql.Types.TIMESTAMP:
                return true;
            default:
                return false;
        }
    }

    /**
     * Indicates whether the given SQL data type is a boolean type.
     * This method is called internally by the conversion methods
     * <code>convertNumeric</code> and <code>convertBoolean</code>.
     *
     * @param type one of the constants from <code>java.sql.Types</code>
     * @return <code>true</code> if the given type is <code>BIT</code>,
     *         , or <code>BOOLEAN</code>;
     *         <code>false</code> otherwise
     */
    private boolean isBoolean(int type) {
        switch (type) {
            case java.sql.Types.BIT:
            case java.sql.Types.BOOLEAN:
                return true;
            default:
                return false;
        }
    }


    /**
     * Converts the given <code>Object</code> in the Java programming language
     * to the standard mapping for the specified SQL target data type.
     * The conversion must be to a string or numeric type, but there are no
     * restrictions on the type to be converted.  If the source type and target
     * type are the same, the given object is simply returned.
     *
     * @param srcObj the <code>Object</code> in the Java programming language
     *               that is to be converted to the target type
     * @param srcType the data type that is the standard mapping in SQL of the
     *                object to be converted; must be one of the constants in
     *                <code>java.sql.Types</code>
     * @param trgType the SQL data type to which to convert the given object;
     *                must be one of the following constants in
     *                <code>java.sql.Types</code>: <code>NUMERIC</code>,
     *         <code>DECIMAL</code>, <code>BIT</code>, <code>TINYINT</code>,
     *         <code>SMALLINT</code>, <code>INTEGER</code>, <code>BIGINT</code>,
     *         <code>REAL</code>, <code>DOUBLE</code>, <code>FLOAT</code>,
     *         <code>VARCHAR</code>, <code>LONGVARCHAR</code>, or <code>CHAR</code>
     * @return an <code>Object</code> value.that is
     *         the standard object mapping for the target SQL type
     * @throws SQLException if the given target type is not one of the string or
     *         numeric types in <code>java.sql.Types</code>
     */
    private Object convertNumeric(Object srcObj, int srcType,
    int trgType) throws SQLException {

        if (srcType == trgType) {
            return srcObj;
        }

        if (isNumeric(trgType) == false && isString(trgType) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString() + trgType);
        }

        try {
            switch (trgType) {
                case java.sql.Types.BIT:
                    Integer i = Integer.valueOf(srcObj.toString().trim());
                    return i.equals(0) ?
                    Boolean.valueOf(false) :
                        Boolean.valueOf(true);
                case java.sql.Types.TINYINT:
                    return Byte.valueOf(srcObj.toString().trim());
                case java.sql.Types.SMALLINT:
                    return Short.valueOf(srcObj.toString().trim());
                case java.sql.Types.INTEGER:
                    return Integer.valueOf(srcObj.toString().trim());
                case java.sql.Types.BIGINT:
                    return Long.valueOf(srcObj.toString().trim());
                case java.sql.Types.NUMERIC:
                case java.sql.Types.DECIMAL:
                    return new BigDecimal(srcObj.toString().trim());
                case java.sql.Types.REAL:
                case java.sql.Types.FLOAT:
                    return Float.valueOf(srcObj.toString().trim());
                case java.sql.Types.DOUBLE:
                    return Double.valueOf(srcObj.toString().trim());
                case java.sql.Types.CHAR:
                case java.sql.Types.VARCHAR:
                case java.sql.Types.LONGVARCHAR:
                    return srcObj.toString();
                default:
                    throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString()+ trgType);
            }
        } catch (NumberFormatException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString() + trgType);
        }
    }

    /**
     * Converts the given <code>Object</code> in the Java programming language
     * to the standard object mapping for the specified SQL target data type.
     * The conversion must be to a string or temporal type, and there are also
     * restrictions on the type to be converted.
     * <P>
     * <TABLE ALIGN="CENTER" BORDER CELLPADDING=10 BORDERCOLOR="#0000FF"
     * <CAPTION ALIGN="CENTER"><B>Parameters and Return Values</B></CAPTION>
     * <TR>
     *   <TD><B>Source SQL Type</B>
     *   <TD><B>Target SQL Type</B>
     *   <TD><B>Object Returned</B>
     * </TR>
     * <TR>
     *   <TD><code>TIMESTAMP</code>
     *   <TD><code>DATE</code>
     *   <TD><code>java.sql.Date</code>
     * </TR>
     * <TR>
     *   <TD><code>TIMESTAMP</code>
     *   <TD><code>TIME</code>
     *   <TD><code>java.sql.Time</code>
     * </TR>
     * <TR>
     *   <TD><code>TIME</code>
     *   <TD><code>TIMESTAMP</code>
     *   <TD><code>java.sql.Timestamp</code>
     * </TR>
     * <TR>
     *   <TD><code>DATE</code>, <code>TIME</code>, or <code>TIMESTAMP</code>
     *   <TD><code>CHAR</code>, <code>VARCHAR</code>, or <code>LONGVARCHAR</code>
     *   <TD><code>java.lang.String</code>
     * </TR>
     * </TABLE>
     * <P>
     * If the source type and target type are the same,
     * the given object is simply returned.
     *
     * @param srcObj the <code>Object</code> in the Java programming language
     *               that is to be converted to the target type
     * @param srcType the data type that is the standard mapping in SQL of the
     *                object to be converted; must be one of the constants in
     *                <code>java.sql.Types</code>
     * @param trgType the SQL data type to which to convert the given object;
     *                must be one of the following constants in
     *                <code>java.sql.Types</code>: <code>DATE</code>,
     *         <code>TIME</code>, <code>TIMESTAMP</code>, <code>CHAR</code>,
     *         <code>VARCHAR</code>, or <code>LONGVARCHAR</code>
     * @return an <code>Object</code> value.that is
     *         the standard object mapping for the target SQL type
     * @throws SQLException if the given target type is not one of the string or
     *         temporal types in <code>java.sql.Types</code>
     */
    private Object convertTemporal(Object srcObj,
    int srcType, int trgType) throws SQLException {

        if (srcType == trgType) {
            return srcObj;
        }

        if (isNumeric(trgType) == true ||
        (isString(trgType) == false && isTemporal(trgType) == false)) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        try {
            switch (trgType) {
                case java.sql.Types.DATE:
                    if (srcType == java.sql.Types.TIMESTAMP) {
                        return new java.sql.Date(((java.sql.Timestamp)srcObj).getTime());
                    } else {
                        throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
                    }
                case java.sql.Types.TIMESTAMP:
                    if (srcType == java.sql.Types.TIME) {
                        return new Timestamp(((java.sql.Time)srcObj).getTime());
                    } else {
                        return new Timestamp(((java.sql.Date)srcObj).getTime());
                    }
                case java.sql.Types.TIME:
                    if (srcType == java.sql.Types.TIMESTAMP) {
                        return new Time(((java.sql.Timestamp)srcObj).getTime());
                    } else {
                        throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
                    }
                case java.sql.Types.CHAR:
                case java.sql.Types.VARCHAR:
                case java.sql.Types.LONGVARCHAR:
                    return srcObj.toString();
                default:
                    throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
            }
        } catch (NumberFormatException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

    }

    /**
     * Converts the given <code>Object</code> in the Java programming language
     * to the standard mapping for the specified SQL target data type.
     * The conversion must be to a string or numeric type, but there are no
     * restrictions on the type to be converted.  If the source type and target
     * type are the same, the given object is simply returned.
     *
     * @param srcObj the <code>Object</code> in the Java programming language
     *               that is to be converted to the target type
     * @param srcType the data type that is the standard mapping in SQL of the
     *                object to be converted; must be one of the constants in
     *                <code>java.sql.Types</code>
     * @param trgType the SQL data type to which to convert the given object;
     *                must be one of the following constants in
     *                <code>java.sql.Types</code>: <code>BIT</code>,
     *         or <code>BOOLEAN</code>
     * @return an <code>Object</code> value.that is
     *         the standard object mapping for the target SQL type
     * @throws SQLException if the given target type is not one of the Boolean
     *         types in <code>java.sql.Types</code>
     */
    private Object convertBoolean(Object srcObj, int srcType,
    int trgType) throws SQLException {

        if (srcType == trgType) {
            return srcObj;
        }

        if (isNumeric(trgType) == true ||
        (isString(trgType) == false && isBoolean(trgType) == false)) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }


        try {
            switch (trgType) {
                case java.sql.Types.BIT:
                    Integer i = Integer.valueOf(srcObj.toString().trim());
                    return i.equals(0) ?
                    Boolean.valueOf(false) :
                        Boolean.valueOf(true);
                case java.sql.Types.BOOLEAN:
                    return Boolean.valueOf(srcObj.toString().trim());
                default:
                    throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString()+ trgType);
            }
        } catch (NumberFormatException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString() + trgType);
        }
    }

    /**
     * Sets the designated nullable column in the current row or the
     * insert row of this <code>CachedRowSetImpl</code> object with
     * <code>null</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset; however, another method must be called to complete
     * the update process. If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to mark the row as updated
     * and to notify listeners that the row has changed.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called to insert the new row into this rowset and to notify
     * listeners that a row has changed.
     * <P>
     * In order to propagate updates in this rowset to the underlying
     * data source, an application must call the method {@link #acceptChanges}
     * after it calls either <code>updateRow</code> or <code>insertRow</code>.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateNull(int columnIndex) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        BaseRow row = getCurrentRow();
        row.setColumnObject(columnIndex, null);

    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>boolean</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBoolean(int columnIndex, boolean x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();
        Object obj = convertBoolean(Boolean.valueOf(x),
        java.sql.Types.BIT,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>byte</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateByte(int columnIndex, byte x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertNumeric(Byte.valueOf(x),
        java.sql.Types.TINYINT,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>short</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateShort(int columnIndex, short x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertNumeric(Short.valueOf(x),
        java.sql.Types.SMALLINT,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>int</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateInt(int columnIndex, int x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();
        Object obj = convertNumeric(x,
        java.sql.Types.INTEGER,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>long</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateLong(int columnIndex, long x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertNumeric(Long.valueOf(x),
        java.sql.Types.BIGINT,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);

    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>float</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateFloat(int columnIndex, float x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertNumeric(Float.valueOf(x),
        java.sql.Types.REAL,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>double</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateDouble(int columnIndex, double x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();
        Object obj = convertNumeric(Double.valueOf(x),
        java.sql.Types.DOUBLE,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.math.BigDecimal</code> object.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBigDecimal(int columnIndex, BigDecimal x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertNumeric(x,
        java.sql.Types.NUMERIC,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>String</code> object.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to mark the row as updated.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called to insert the new row into this rowset and mark it
     * as inserted. Both of these methods must be called before the
     * cursor moves to another row.
     * <P>
     * The method <code>acceptChanges</code> must be called if the
     * updated values are to be written back to the underlying database.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateString(int columnIndex, String x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        getCurrentRow().setColumnObject(columnIndex, x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>byte</code> array.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBytes(int columnIndex, byte x[]) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        getCurrentRow().setColumnObject(columnIndex, x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Date</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, (3) the type of the designated column is not
     *            an SQL <code>DATE</code> or <code>TIMESTAMP</code>, or
     *            (4) this rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateDate(int columnIndex, java.sql.Date x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertTemporal(x,
        java.sql.Types.DATE,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Time</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, (3) the type of the designated column is not
     *            an SQL <code>TIME</code> or <code>TIMESTAMP</code>, or
     *            (4) this rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateTime(int columnIndex, java.sql.Time x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertTemporal(x,
        java.sql.Types.TIME,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Timestamp</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, (3) the type of the designated column is not
     *            an SQL <code>DATE</code>, <code>TIME</code>, or
     *            <code>TIMESTAMP</code>, or (4) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateTimestamp(int columnIndex, java.sql.Timestamp x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        Object obj = convertTemporal(x,
        java.sql.Types.TIMESTAMP,
        RowSetMD.getColumnType(columnIndex));

        getCurrentRow().setColumnObject(columnIndex, obj);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * ASCII stream value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @param length the number of one-byte ASCII characters in the stream
     * @throws SQLException if this method is invoked
     */
    public void updateAsciiStream(int columnIndex, java.io.InputStream x, int length) throws SQLException {
        // sanity Check
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();


        if (isString(RowSetMD.getColumnType(columnIndex)) == false &&
        isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        byte buf[] = new byte[length];
        try {
            int charsRead = 0;
            do {
                charsRead += x.read(buf, charsRead, length - charsRead);
            } while (charsRead != length);
            //Changed the condition check to check for length instead of -1
        } catch (java.io.IOException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.asciistream").toString());
        }
        String str = new String(buf);

        getCurrentRow().setColumnObject(columnIndex, str);

    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.io.InputStream</code> object.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value; must be a <code>java.io.InputStream</code>
     *          containing <code>BINARY</code>, <code>VARBINARY</code>, or
     *          <code>LONGVARBINARY</code> data
     * @param length the length of the stream in bytes
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, (3) the data in the stream is not binary, or
     *            (4) this rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBinaryStream(int columnIndex, java.io.InputStream x,int length) throws SQLException {
        // sanity Check
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        byte buf[] = new byte[length];
        try {
            int bytesRead = 0;
            do {
                bytesRead += x.read(buf, bytesRead, length - bytesRead);
            } while (bytesRead != -1);
        } catch (java.io.IOException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.binstream").toString());
        }

        getCurrentRow().setColumnObject(columnIndex, buf);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.io.Reader</code> object.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value; must be a <code>java.io.Reader</code>
     *          containing <code>BINARY</code>, <code>VARBINARY</code>,
     *          <code>LONGVARBINARY</code>, <code>CHAR</code>, <code>VARCHAR</code>,
     *          or <code>LONGVARCHAR</code> data
     * @param length the length of the stream in characters
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, (3) the data in the stream is not a binary or
     *            character type, or (4) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateCharacterStream(int columnIndex, java.io.Reader x, int length) throws SQLException {
        // sanity Check
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (isString(RowSetMD.getColumnType(columnIndex)) == false &&
        isBinary(RowSetMD.getColumnType(columnIndex)) == false) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        char buf[] = new char[length];
        try {
            int charsRead = 0;
            do {
                charsRead += x.read(buf, charsRead, length - charsRead);
            } while (charsRead != length);
            //Changed the condition checking to check for length instead of -1
        } catch (java.io.IOException ex) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.binstream").toString());
        }
        String str = new String(buf);

        getCurrentRow().setColumnObject(columnIndex, str);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Object</code> value.  The <code>scale</code> parameter indicates
     * the number of digits to the right of the decimal point and is ignored
     * if the new column value is not a type that will be mapped to an SQL
     * <code>DECIMAL</code> or <code>NUMERIC</code> value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @param scale the number of digits to the right of the decimal point (for
     *              <code>DECIMAL</code> and <code>NUMERIC</code> types only)
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateObject(int columnIndex, Object x, int scale) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        int type = RowSetMD.getColumnType(columnIndex);
        if (type == Types.DECIMAL || type == Types.NUMERIC) {
            ((java.math.BigDecimal)x).setScale(scale);
        }
        getCurrentRow().setColumnObject(columnIndex, x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Object</code> value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param x the new column value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateObject(int columnIndex, Object x) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        getCurrentRow().setColumnObject(columnIndex, x);
    }

    /**
     * Sets the designated nullable column in the current row or the
     * insert row of this <code>CachedRowSetImpl</code> object with
     * <code>null</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateNull(String columnName) throws SQLException {
        updateNull(getColIdxByName(columnName));
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>boolean</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBoolean(String columnName, boolean x) throws SQLException {
        updateBoolean(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>byte</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateByte(String columnName, byte x) throws SQLException {
        updateByte(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>short</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateShort(String columnName, short x) throws SQLException {
        updateShort(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>int</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateInt(String columnName, int x) throws SQLException {
        updateInt(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>long</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateLong(String columnName, long x) throws SQLException {
        updateLong(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>float</code> value.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateFloat(String columnName, float x) throws SQLException {
        updateFloat(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>double</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateDouble(String columnName, double x) throws SQLException {
        updateDouble(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.math.BigDecimal</code> object.
     * <P>
     * This method updates a column value in the current row or the insert
     * row of this rowset, but it does not update the database.
     * If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBigDecimal(String columnName, BigDecimal x) throws SQLException {
        updateBigDecimal(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>String</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateString(String columnName, String x) throws SQLException {
        updateString(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>byte</code> array.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBytes(String columnName, byte x[]) throws SQLException {
        updateBytes(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Date</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, (3) the type
     *            of the designated column is not an SQL <code>DATE</code> or
     *            <code>TIMESTAMP</code>, or (4) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateDate(String columnName, java.sql.Date x) throws SQLException {
        updateDate(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Time</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, (3) the type
     *            of the designated column is not an SQL <code>TIME</code> or
     *            <code>TIMESTAMP</code>, or (4) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateTime(String columnName, java.sql.Time x) throws SQLException {
        updateTime(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Timestamp</code> object.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if the given column index is out of bounds or
     *            the cursor is not on one of this rowset's rows or its
     *            insert row
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, (3) the type
     *            of the designated column is not an SQL <code>DATE</code>,
     *            <code>TIME</code>, or <code>TIMESTAMP</code>, or (4) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateTimestamp(String columnName, java.sql.Timestamp x) throws SQLException {
        updateTimestamp(getColIdxByName(columnName), x);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * ASCII stream value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @param length the number of one-byte ASCII characters in the stream
     */
    public void updateAsciiStream(String columnName,
    java.io.InputStream x,
    int length) throws SQLException {
        updateAsciiStream(getColIdxByName(columnName), x, length);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.io.InputStream</code> object.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value; must be a <code>java.io.InputStream</code>
     *          containing <code>BINARY</code>, <code>VARBINARY</code>, or
     *          <code>LONGVARBINARY</code> data
     * @param length the length of the stream in bytes
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, (3) the data
     *            in the stream is not binary, or (4) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBinaryStream(String columnName, java.io.InputStream x, int length) throws SQLException {
        updateBinaryStream(getColIdxByName(columnName), x, length);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.io.Reader</code> object.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param reader the new column value; must be a
     * <code>java.io.Reader</code> containing <code>BINARY</code>,
     * <code>VARBINARY</code>, <code>LONGVARBINARY</code>, <code>CHAR</code>,
     * <code>VARCHAR</code>, or <code>LONGVARCHAR</code> data
     * @param length the length of the stream in characters
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, (3) the data
     *            in the stream is not a binary or character type, or (4) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateCharacterStream(String columnName,
    java.io.Reader reader,
    int length) throws SQLException {
        updateCharacterStream(getColIdxByName(columnName), reader, length);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Object</code> value.  The <code>scale</code> parameter
     * indicates the number of digits to the right of the decimal point
     * and is ignored if the new column value is not a type that will be
     *  mapped to an SQL <code>DECIMAL</code> or <code>NUMERIC</code> value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @param scale the number of digits to the right of the decimal point (for
     *              <code>DECIMAL</code> and <code>NUMERIC</code> types only)
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateObject(String columnName, Object x, int scale) throws SQLException {
        updateObject(getColIdxByName(columnName), x, scale);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Object</code> value.
     * <P>
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param x the new column value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateObject(String columnName, Object x) throws SQLException {
        updateObject(getColIdxByName(columnName), x);
    }

    /**
     * Inserts the contents of this <code>CachedRowSetImpl</code> object's insert
     * row into this rowset immediately following the current row.
     * If the current row is the
     * position after the last row or before the first row, the new row will
     * be inserted at the end of the rowset.  This method also notifies
     * listeners registered with this rowset that the row has changed.
     * <P>
     * The cursor must be on the insert row when this method is called.
     *
     * @throws SQLException if (1) the cursor is not on the insert row,
     *            (2) one or more of the non-nullable columns in the insert
     *            row has not been given a value, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void insertRow() throws SQLException {
        int pos;

        if (onInsertRow == false ||
            insertRow.isCompleteRow(RowSetMD) == false) {
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.failedins").toString());
        }
        // Added the setting of parameters that are passed
        // to setXXX methods after an empty CRS Object is
        // created through RowSetMetaData object
        Object [] toInsert = getParams();

        for(int i = 0;i < toInsert.length; i++) {
          insertRow.setColumnObject(i+1,toInsert[i]);
        }

        Row insRow = new Row(RowSetMD.getColumnCount(),
        insertRow.getOrigRow());
        insRow.setInserted();
        /*
         * The new row is inserted into the RowSet
         * immediately following the current row.
         *
         * If we are afterlast then the rows are
         * inserted at the end.
         */
        if (currentRow >= numRows || currentRow < 0) {
            pos = numRows;
        } else {
            pos = currentRow;
        }

        rvh.add(pos, insRow);
        ++numRows;
        // notify the listeners that the row changed.
        notifyRowChanged();
    }

    /**
     * Marks the current row of this <code>CachedRowSetImpl</code> object as
     * updated and notifies listeners registered with this rowset that the
     * row has changed.
     * <P>
     * This method  cannot be called when the cursor is on the insert row, and
     * it should be called before the cursor moves to another row.  If it is
     * called after the cursor moves to another row, this method has no effect,
     * and the updates made before the cursor moved will be lost.
     *
     * @throws SQLException if the cursor is on the insert row or this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateRow() throws SQLException {
        // make sure we aren't on the insert row
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.updateins").toString());
        }

        ((Row)getCurrentRow()).setUpdated();

        // notify the listeners that the row changed.
        notifyRowChanged();
    }

    /**
     * Deletes the current row from this <code>CachedRowSetImpl</code> object and
     * notifies listeners registered with this rowset that a row has changed.
     * This method cannot be called when the cursor is on the insert row.
     * <P>
     * This method marks the current row as deleted, but it does not delete
     * the row from the underlying data source.  The method
     * <code>acceptChanges</code> must be called to delete the row in
     * the data source.
     *
     * @throws SQLException if (1) this method is called when the cursor
     *            is on the insert row, before the first row, or after the
     *            last row or (2) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void deleteRow() throws SQLException {
        // make sure the cursor is on a valid row
        checkCursor();

        ((Row)getCurrentRow()).setDeleted();
        ++numDeleted;

        // notify the listeners that the row changed.
        notifyRowChanged();
    }

    /**
     * Sets the current row with its original value and marks the row as
     * not updated, thus undoing any changes made to the row since the
     * last call to the methods <code>updateRow</code> or <code>deleteRow</code>.
     * This method should be called only when the cursor is on a row in
     * this rowset.
     *
     * @throws SQLException if the cursor is on the insert row, before the
     *            first row, or after the last row
     */
    public void refreshRow() throws SQLException {
        // make sure we are on a row
        checkCursor();

        // don't want this to happen...
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }

        Row currentRow = (Row)getCurrentRow();
        // just undo any changes made to this row.
        currentRow.clearUpdated();

    }

    /**
     * Rolls back any updates made to the current row of this
     * <code>CachedRowSetImpl</code> object and notifies listeners that
     * a row has changed.  To have an effect, this method
     * must be called after an <code>updateXXX</code> method has been
     * called and before the method <code>updateRow</code> has been called.
     * If no updates have been made or the method <code>updateRow</code>
     * has already been called, this method has no effect.
     *
     * @throws SQLException if the cursor is on the insert row, before the
     *            first row, or after the last row
     */
    public void cancelRowUpdates() throws SQLException {
        // make sure we are on a row
        checkCursor();

        // don't want this to happen...
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
        }

        Row currentRow = (Row)getCurrentRow();
        if (currentRow.getUpdated() == true) {
            currentRow.clearUpdated();
            notifyRowChanged();
        }
    }

    /**
     * Moves the cursor for this <code>CachedRowSetImpl</code> object
     * to the insert row.  The current row in the rowset is remembered
     * while the cursor is on the insert row.
     * <P>
     * The insert row is a special row associated with an updatable
     * rowset.  It is essentially a buffer where a new row may
     * be constructed by calling the appropriate <code>updateXXX</code>
     * methods to assign a value to each column in the row.  A complete
     * row must be constructed; that is, every column that is not nullable
     * must be assigned a value.  In order for the new row to become part
     * of this rowset, the method <code>insertRow</code> must be called
     * before the cursor is moved back to the rowset.
     * <P>
     * Only certain methods may be invoked while the cursor is on the insert
     * row; many methods throw an exception if they are called while the
     * cursor is there.  In addition to the <code>updateXXX</code>
     * and <code>insertRow</code> methods, only the <code>getXXX</code> methods
     * may be called when the cursor is on the insert row.  A <code>getXXX</code>
     * method should be called on a column only after an <code>updateXXX</code>
     * method has been called on that column; otherwise, the value returned is
     * undetermined.
     *
     * @throws SQLException if this <code>CachedRowSetImpl</code> object is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void moveToInsertRow() throws SQLException {
        if (getConcurrency() == ResultSet.CONCUR_READ_ONLY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.movetoins").toString());
        }
        if (insertRow == null) {
            if (RowSetMD == null)
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.movetoins1").toString());
            int numCols = RowSetMD.getColumnCount();
            if (numCols > 0) {
                insertRow = new InsertRow(numCols);
            } else {
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.movetoins2").toString());
            }
        }
        onInsertRow = true;
        // %%% setCurrentRow called in BaseRow

        currentRow = cursorPos;
        cursorPos = -1;

        insertRow.initInsertRow();
    }

    /**
     * Moves the cursor for this <code>CachedRowSetImpl</code> object to
     * the current row.  The current row is the row the cursor was on
     * when the method <code>moveToInsertRow</code> was called.
     * <P>
     * Calling this method has no effect unless it is called while the
     * cursor is on the insert row.
     *
     * @throws SQLException if an error occurs
     */
    public void moveToCurrentRow() throws SQLException {
        if (onInsertRow == false) {
            return;
        } else {
            cursorPos = currentRow;
            onInsertRow = false;
        }
    }

    /**
     * Returns <code>null</code>.
     *
     * @return <code>null</code>
     * @throws SQLException if an error occurs
     */
    public Statement getStatement() throws SQLException {
        return null;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as an <code>Object</code> in
     * the Java programming language, using the given
     * <code>java.util.Map</code> object to custom map the value if
     * appropriate.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param map a <code>java.util.Map</code> object showing the mapping
     *            from SQL type names to classes in the Java programming
     *            language
     * @return an <code>Object</code> representing the SQL value
     * @throws SQLException if the given column index is out of bounds or
     *            the cursor is not on one of this rowset's rows or its
     *            insert row
     */
     public Object getObject(int columnIndex,
                             java.util.Map<String,Class<?>> map)
         throws SQLException
     {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }
        if (value instanceof Struct) {
            Struct s = (Struct)value;

            // look up the class in the map
            Class<?> c = map.get(s.getSQLTypeName());
            if (c != null) {
                // create new instance of the class
                SQLData obj = null;
                try {
                    ReflectUtil.checkPackageAccess(c);
                    @SuppressWarnings("deprecation")
                    Object tmp = c.newInstance();
                    obj = (SQLData) tmp;
                } catch(Exception ex) {
                    throw new SQLException("Unable to Instantiate: ", ex);
                }
                // get the attributes from the struct
                Object attribs[] = s.getAttributes(map);
                // create the SQLInput "stream"
                SQLInputImpl sqlInput = new SQLInputImpl(attribs, map);
                // read the values...
                obj.readSQL(sqlInput, s.getSQLTypeName());
                return (Object)obj;
            }
        }
        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Ref</code> object
     * in the Java programming language.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return a <code>Ref</code> object representing an SQL<code> REF</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code>REF</code> value
     * @see #getRef(String)
     */
    public Ref getRef(int columnIndex) throws SQLException {
        Ref value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (RowSetMD.getColumnType(columnIndex) != java.sql.Types.REF) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        setLastValueNull(false);
        value = (Ref)(getCurrentRow().getColumnObject(columnIndex));

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Blob</code> object
     * in the Java programming language.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return a <code>Blob</code> object representing an SQL <code>BLOB</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code>BLOB</code> value
     * @see #getBlob(String)
     */
    public Blob getBlob(int columnIndex) throws SQLException {
        Blob value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (RowSetMD.getColumnType(columnIndex) != java.sql.Types.BLOB) {
            System.out.println(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.type").toString(), RowSetMD.getColumnType(columnIndex)));
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        setLastValueNull(false);
        value = (Blob)(getCurrentRow().getColumnObject(columnIndex));

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Clob</code> object
     * in the Java programming language.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return a <code>Clob</code> object representing an SQL <code>CLOB</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code>CLOB</code> value
     * @see #getClob(String)
     */
    public Clob getClob(int columnIndex) throws SQLException {
        Clob value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (RowSetMD.getColumnType(columnIndex) != java.sql.Types.CLOB) {
            System.out.println(MessageFormat.format(resBundle.handleGetObject("cachedrowsetimpl.type").toString(), RowSetMD.getColumnType(columnIndex)));
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        setLastValueNull(false);
        value = (Clob)(getCurrentRow().getColumnObject(columnIndex));

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as an <code>Array</code> object
     * in the Java programming language.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @return an <code>Array</code> object representing an SQL
     *         <code>ARRAY</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) the designated column does not store an
     *            SQL <code>ARRAY</code> value
     * @see #getArray(String)
     */
    public Array getArray(int columnIndex) throws SQLException {
        java.sql.Array value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (RowSetMD.getColumnType(columnIndex) != java.sql.Types.ARRAY) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        setLastValueNull(false);
        value = (java.sql.Array)(getCurrentRow().getColumnObject(columnIndex));

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as an <code>Object</code> in
     * the Java programming language, using the given
     * <code>java.util.Map</code> object to custom map the value if
     * appropriate.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param map a <code>java.util.Map</code> object showing the mapping
     *        from SQL type names to classes in the Java programming
     *        language
     * @return an <code>Object</code> representing the SQL value
     * @throws SQLException if the given column name is not the name of
     *         a column in this rowset or the cursor is not on one of
     *         this rowset's rows or its insert row
     */
    public Object getObject(String columnName,
                            java.util.Map<String,Class<?>> map)
    throws SQLException {
        return getObject(getColIdxByName(columnName), map);
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Ref</code> object
     * in the Java programming language.
     *
     * @param colName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return a <code>Ref</code> object representing an SQL<code> REF</code> value
     * @throws SQLException  if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the column value
     *            is not an SQL <code>REF</code> value
     * @see #getRef(int)
     */
    public Ref getRef(String colName) throws SQLException {
        return getRef(getColIdxByName(colName));
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Blob</code> object
     * in the Java programming language.
     *
     * @param colName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return a <code>Blob</code> object representing an SQL <code>BLOB</code> value
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>BLOB</code> value
     * @see #getBlob(int)
     */
    public Blob getBlob(String colName) throws SQLException {
        return getBlob(getColIdxByName(colName));
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>Clob</code> object
     * in the Java programming language.
     *
     * @param colName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return a <code>Clob</code> object representing an SQL
     *         <code>CLOB</code> value
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>CLOB</code> value
     * @see #getClob(int)
     */
    public Clob getClob(String colName) throws SQLException {
        return getClob(getColIdxByName(colName));
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as an <code>Array</code> object
     * in the Java programming langugage.
     *
     * @param colName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @return an <code>Array</code> object representing an SQL
     *         <code>ARRAY</code> value
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>ARRAY</code> value
     * @see #getArray(int)
     */
    public Array getArray(String colName) throws SQLException {
        return getArray(getColIdxByName(colName));
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a <code>java.sql.Date</code>
     * object, using the given <code>Calendar</code> object to construct an
     * appropriate millisecond value for the date.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>DATE</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Date getDate(int columnIndex, Calendar cal) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        value = convertTemporal(value,
        RowSetMD.getColumnType(columnIndex),
        java.sql.Types.DATE);

        // create a default calendar
        Calendar defaultCal = Calendar.getInstance();
        // set this Calendar to the time we have
        defaultCal.setTime((java.util.Date)value);

        /*
         * Now we can pull the pieces of the date out
         * of the default calendar and put them into
         * the user provided calendar
         */
        cal.set(Calendar.YEAR, defaultCal.get(Calendar.YEAR));
        cal.set(Calendar.MONTH, defaultCal.get(Calendar.MONTH));
        cal.set(Calendar.DAY_OF_MONTH, defaultCal.get(Calendar.DAY_OF_MONTH));

        /*
         * This looks a little odd but it is correct -
         * Calendar.getTime() returns a Date...
         */
        return new java.sql.Date(cal.getTime().getTime());
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a <code>java.sql.Date</code>
     * object, using the given <code>Calendar</code> object to construct an
     * appropriate millisecond value for the date.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>DATE</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Date getDate(String columnName, Calendar cal) throws SQLException {
        return getDate(getColIdxByName(columnName), cal);
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a <code>java.sql.Time</code>
     * object, using the given <code>Calendar</code> object to construct an
     * appropriate millisecond value for the date.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>TIME</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Time getTime(int columnIndex, Calendar cal) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        value = convertTemporal(value,
        RowSetMD.getColumnType(columnIndex),
        java.sql.Types.TIME);

        // create a default calendar
        Calendar defaultCal = Calendar.getInstance();
        // set the time in the default calendar
        defaultCal.setTime((java.util.Date)value);

        /*
         * Now we can pull the pieces of the date out
         * of the default calendar and put them into
         * the user provided calendar
         */
        cal.set(Calendar.HOUR_OF_DAY, defaultCal.get(Calendar.HOUR_OF_DAY));
        cal.set(Calendar.MINUTE, defaultCal.get(Calendar.MINUTE));
        cal.set(Calendar.SECOND, defaultCal.get(Calendar.SECOND));

        return new java.sql.Time(cal.getTime().getTime());
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a <code>java.sql.Time</code>
     * object, using the given <code>Calendar</code> object to construct an
     * appropriate millisecond value for the date.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>TIME</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Time getTime(String columnName, Calendar cal) throws SQLException {
        return getTime(getColIdxByName(columnName), cal);
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a <code>java.sql.Timestamp</code>
     * object, using the given <code>Calendar</code> object to construct an
     * appropriate millisecond value for the date.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in the rowset
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>TIME</code> or
     *            <code>TIMESTAMP</code> value
     */
    public java.sql.Timestamp getTimestamp(int columnIndex, Calendar cal) throws SQLException {
        Object value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        setLastValueNull(false);
        value = getCurrentRow().getColumnObject(columnIndex);

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        value = convertTemporal(value,
        RowSetMD.getColumnType(columnIndex),
        java.sql.Types.TIMESTAMP);

        // create a default calendar
        Calendar defaultCal = Calendar.getInstance();
        // set the time in the default calendar
        defaultCal.setTime((java.util.Date)value);

        /*
         * Now we can pull the pieces of the date out
         * of the default calendar and put them into
         * the user provided calendar
         */
        cal.set(Calendar.YEAR, defaultCal.get(Calendar.YEAR));
        cal.set(Calendar.MONTH, defaultCal.get(Calendar.MONTH));
        cal.set(Calendar.DAY_OF_MONTH, defaultCal.get(Calendar.DAY_OF_MONTH));
        cal.set(Calendar.HOUR_OF_DAY, defaultCal.get(Calendar.HOUR_OF_DAY));
        cal.set(Calendar.MINUTE, defaultCal.get(Calendar.MINUTE));
        cal.set(Calendar.SECOND, defaultCal.get(Calendar.SECOND));

        return new java.sql.Timestamp(cal.getTime().getTime());
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>CachedRowSetImpl</code> object as a
     * <code>java.sql.Timestamp</code> object, using the given
     * <code>Calendar</code> object to construct an appropriate
     * millisecond value for the date.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param cal the <code>java.util.Calendar</code> object to use in
     *            constructing the date
     * @return the column value; if the value is SQL <code>NULL</code>,
     *         the result is <code>null</code>
     * @throws SQLException if (1) the given column name is not the name of
     *            a column in this rowset, (2) the cursor is not on one of
     *            this rowset's rows or its insert row, or (3) the designated
     *            column does not store an SQL <code>DATE</code>,
     *            <code>TIME</code>, or <code>TIMESTAMP</code> value
     */
    public java.sql.Timestamp getTimestamp(String columnName, Calendar cal) throws SQLException {
        return getTimestamp(getColIdxByName(columnName), cal);
    }

    /*
     * RowSetInternal Interface
     */

    /**
     * Retrieves the <code>Connection</code> object passed to this
     * <code>CachedRowSetImpl</code> object.  This connection may be
     * used to populate this rowset with data or to write data back
     * to its underlying data source.
     *
     * @return the <code>Connection</code> object passed to this rowset;
     *         may be <code>null</code> if there is no connection
     * @throws SQLException if an error occurs
     */
    public Connection getConnection() throws SQLException{
        return conn;
    }

    /**
     * Sets the metadata for this <code>CachedRowSetImpl</code> object
     * with the given <code>RowSetMetaData</code> object.
     *
     * @param md a <code>RowSetMetaData</code> object instance containing
     *            metadata about the columsn in the rowset
     * @throws SQLException if invalid meta data is supplied to the
     *            rowset
     */
    public void setMetaData(RowSetMetaData md) throws SQLException {
        RowSetMD =(RowSetMetaDataImpl) md;
    }

    /**
     * Returns a result set containing the original value of the rowset. The
     * original value is the state of the <code>CachedRowSetImpl</code> after the
     * last population or synchronization (whichever occurred most recently) with
     * the data source.
     * <p>
     * The cursor is positioned before the first row in the result set.
     * Only rows contained in the result set returned by <code>getOriginal()</code>
     * are said to have an original value.
     *
     * @return the original result set of the rowset
     * @throws SQLException if an error occurs produce the
     *           <code>ResultSet</code> object
     */
    public ResultSet getOriginal() throws SQLException {
        CachedRowSetImpl crs = new CachedRowSetImpl();
        crs.RowSetMD = RowSetMD;
        crs.numRows = numRows;
        crs.cursorPos = 0;

        // make sure we don't get someone playing with these
        // %%% is this now necessary ???
        //crs.setReader(null);
        //crs.setWriter(null);
        int colCount = RowSetMD.getColumnCount();
        Row orig;

        for (Iterator<?> i = rvh.iterator(); i.hasNext();) {
            orig = new Row(colCount, ((Row)i.next()).getOrigRow());
            crs.rvh.add(orig);
        }
        return (ResultSet)crs;
    }

    /**
     * Returns a result set containing the original value of the current
     * row only.
     * The original value is the state of the <code>CachedRowSetImpl</code> after
     * the last population or synchronization (whichever occurred most recently)
     * with the data source.
     *
     * @return the original result set of the row
     * @throws SQLException if there is no current row
     * @see #setOriginalRow
     */
    public ResultSet getOriginalRow() throws SQLException {
        CachedRowSetImpl crs = new CachedRowSetImpl();
        crs.RowSetMD = RowSetMD;
        crs.numRows = 1;
        crs.cursorPos = 0;
        crs.setTypeMap(this.getTypeMap());

        // make sure we don't get someone playing with these
        // %%% is this now necessary ???
        //crs.setReader(null);
        //crs.setWriter(null);

        Row orig = new Row(RowSetMD.getColumnCount(),
        getCurrentRow().getOrigRow());

        crs.rvh.add(orig);

        return (ResultSet)crs;

    }

    /**
     * Marks the current row in this rowset as being an original row.
     *
     * @throws SQLException if there is no current row
     * @see #getOriginalRow
     */
    public void setOriginalRow() throws SQLException {
        if (onInsertRow == true) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());
        }

        Row row = (Row)getCurrentRow();
        makeRowOriginal(row);

        // this can happen if deleted rows are being shown
        if (row.getDeleted() == true) {
            removeCurrentRow();
        }
    }

    /**
     * Makes the given row of this rowset the original row by clearing any
     * settings that mark the row as having been inserted, deleted, or updated.
     * This method is called internally by the methods
     * <code>setOriginalRow</code>
     * and <code>setOriginal</code>.
     *
     * @param row the row to be made the original row
     */
    private void makeRowOriginal(Row row) {
        if (row.getInserted() == true) {
            row.clearInserted();
        }

        if (row.getUpdated() == true) {
            row.moveCurrentToOrig();
        }
    }

    /**
     * Marks all rows in this rowset as being original rows. Any updates
     * made to the rows become the original values for the rowset.
     * Calls to the method <code>setOriginal</code> connot be reversed.
     *
     * @throws SQLException if an error occurs
     */
    public void setOriginal() throws SQLException {
        for (Iterator<?> i = rvh.iterator(); i.hasNext();) {
            Row row = (Row)i.next();
            makeRowOriginal(row);
            // remove deleted rows from the collection.
            if (row.getDeleted() == true) {
                i.remove();
                --numRows;
            }
        }
        numDeleted = 0;

        // notify any listeners that the rowset has changed
        notifyRowSetChanged();
    }

    /**
     * Returns an identifier for the object (table) that was used to create this
     * rowset.
     *
     * @return a <code>String</code> object that identifies the table from
     *         which this <code>CachedRowSetImpl</code> object was derived
     * @throws SQLException if an error occurs
     */
    public String getTableName() throws SQLException {
        return tableName;
    }

    /**
     * Sets the identifier for the table from which this rowset was derived
     * to the given table name.
     *
     * @param tabName a <code>String</code> object that identifies the
     *          table from which this <code>CachedRowSetImpl</code> object
     *          was derived
     * @throws SQLException if an error occurs
     */
    public void setTableName(String tabName) throws SQLException {
        if (tabName == null)
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.tablename").toString());
        else
            tableName = tabName;
    }

    /**
     * Returns the columns that make a key to uniquely identify a
     * row in this <code>CachedRowSetImpl</code> object.
     *
     * @return an array of column numbers that constitutes a primary
     *           key for this rowset. This array should be empty
     *           if no column is representitive of a primary key
     * @throws SQLException if the rowset is empty or no columns
     *           are designated as primary keys
     * @see #setKeyColumns
     */
    public int[] getKeyColumns() throws SQLException {
        int[]keyColumns  = this.keyCols;
        return (keyColumns == null) ? null : Arrays.copyOf(keyColumns, keyColumns.length);
    }


    /**
     * Sets this <code>CachedRowSetImpl</code> object's
     * <code>keyCols</code> field with the given array of column
     * numbers, which forms a key for uniquely identifying a row
     * in this rowset.
     *
     * @param keys an array of <code>int</code> indicating the
     *        columns that form a primary key for this
     *        <code>CachedRowSetImpl</code> object; every
     *        element in the array must be greater than
     *        <code>0</code> and less than or equal to the number
     *        of columns in this rowset
     * @throws SQLException if any of the numbers in the
     *            given array is not valid for this rowset
     * @see #getKeyColumns
     */
    public void setKeyColumns(int [] keys) throws SQLException {
        int numCols = 0;
        if (RowSetMD != null) {
            numCols = RowSetMD.getColumnCount();
            if (keys.length > numCols)
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.keycols").toString());
        }
        keyCols = new int[keys.length];
        for (int i = 0; i < keys.length; i++) {
            if (RowSetMD != null && (keys[i] <= 0 ||
            keys[i] > numCols)) {
                throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcol").toString() +
                keys[i]);
            }
            keyCols[i] = keys[i];
        }
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>Ref</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param ref the new column <code>java.sql.Ref</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *        (2) the cursor is not on one of this rowset's rows or its
     *        insert row, or (3) this rowset is
     *        <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateRef(int columnIndex, java.sql.Ref ref) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        // SerialClob will help in getting the byte array and storing it.
        // We need to be checking DatabaseMetaData.locatorsUpdatorCopy()
        // or through RowSetMetaData.locatorsUpdatorCopy()
        getCurrentRow().setColumnObject(columnIndex, new SerialRef(ref));
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>double</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param ref the new column <code>java.sql.Ref</code> value
     * @throws SQLException if (1) the given column name does not match the
     *        name of a column in this rowset, (2) the cursor is not on
     *        one of this rowset's rows or its insert row, or (3) this
     *        rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateRef(String columnName, java.sql.Ref ref) throws SQLException {
        updateRef(getColIdxByName(columnName), ref);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>double</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param c the new column <code>Clob</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *        (2) the cursor is not on one of this rowset's rows or its
     *        insert row, or (3) this rowset is
     *        <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateClob(int columnIndex, Clob c) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        // SerialClob will help in getting the byte array and storing it.
        // We need to be checking DatabaseMetaData.locatorsUpdatorCopy()
        // or through RowSetMetaData.locatorsUpdatorCopy()

        if(dbmslocatorsUpdateCopy){
           getCurrentRow().setColumnObject(columnIndex, new SerialClob(c));
        }
        else{
           throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.opnotsupp").toString());
        }
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>double</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param c the new column <code>Clob</code> value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateClob(String columnName, Clob c) throws SQLException {
        updateClob(getColIdxByName(columnName), c);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.sql.Blob</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param b the new column <code>Blob</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBlob(int columnIndex, Blob b) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        // SerialBlob will help in getting the byte array and storing it.
        // We need to be checking DatabaseMetaData.locatorsUpdatorCopy()
        // or through RowSetMetaData.locatorsUpdatorCopy()

        if(dbmslocatorsUpdateCopy){
           getCurrentRow().setColumnObject(columnIndex, new SerialBlob(b));
        }
        else{
           throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.opnotsupp").toString());
        }
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.sql.Blob </code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param b the new column <code>Blob</code> value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateBlob(String columnName, Blob b) throws SQLException {
        updateBlob(getColIdxByName(columnName), b);
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.sql.Array</code> values.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnIndex the first column is <code>1</code>, the second
     *        is <code>2</code>, and so on; must be <code>1</code> or larger
     *        and equal to or less than the number of columns in this rowset
     * @param a the new column <code>Array</code> value
     * @throws SQLException if (1) the given column index is out of bounds,
     *            (2) the cursor is not on one of this rowset's rows or its
     *            insert row, or (3) this rowset is
     *            <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateArray(int columnIndex, Array a) throws SQLException {
        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        // SerialArray will help in getting the byte array and storing it.
        // We need to be checking DatabaseMetaData.locatorsUpdatorCopy()
        // or through RowSetMetaData.locatorsUpdatorCopy()
        getCurrentRow().setColumnObject(columnIndex, new SerialArray(a));
    }

    /**
     * Sets the designated column in either the current row or the insert
     * row of this <code>CachedRowSetImpl</code> object with the given
     * <code>java.sql.Array</code> value.
     *
     * This method updates a column value in either the current row or
     * the insert row of this rowset, but it does not update the
     * database.  If the cursor is on a row in the rowset, the
     * method {@link #updateRow} must be called to update the database.
     * If the cursor is on the insert row, the method {@link #insertRow}
     * must be called, which will insert the new row into both this rowset
     * and the database. Both of these methods must be called before the
     * cursor moves to another row.
     *
     * @param columnName a <code>String</code> object that must match the
     *        SQL name of a column in this rowset, ignoring case
     * @param a the new column <code>Array</code> value
     * @throws SQLException if (1) the given column name does not match the
     *            name of a column in this rowset, (2) the cursor is not on
     *            one of this rowset's rows or its insert row, or (3) this
     *            rowset is <code>ResultSet.CONCUR_READ_ONLY</code>
     */
    public void updateArray(String columnName, Array a) throws SQLException {
        updateArray(getColIdxByName(columnName), a);
    }


    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>java.net.URL</code> object
     * in the Java programming language.
     *
     * @return a java.net.URL object containing the resource reference described by
     * the URL
     * @throws SQLException if (1) the given column index is out of bounds,
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>DATALINK</code> value.
     * @see #getURL(String)
     */
    public java.net.URL getURL(int columnIndex) throws SQLException {
        //throw new SQLException("Operation not supported");

        java.net.URL value;

        // sanity check.
        checkIndex(columnIndex);
        // make sure the cursor is on a valid row
        checkCursor();

        if (RowSetMD.getColumnType(columnIndex) != java.sql.Types.DATALINK) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.dtypemismt").toString());
        }

        setLastValueNull(false);
        value = (java.net.URL)(getCurrentRow().getColumnObject(columnIndex));

        // check for SQL NULL
        if (value == null) {
            setLastValueNull(true);
            return null;
        }

        return value;
    }

    /**
     * Retrieves the value of the designated column in this
     * <code>CachedRowSetImpl</code> object as a <code>java.net.URL</code> object
     * in the Java programming language.
     *
     * @return a java.net.URL object containing the resource reference described by
     * the URL
     * @throws SQLException if (1) the given column name not the name of a column
     * in this rowset, or
     * (2) the cursor is not on one of this rowset's rows or its
     * insert row, or (3) the designated column does not store an
     * SQL <code>DATALINK</code> value.
     * @see #getURL(int)
     */
    public java.net.URL getURL(String columnName) throws SQLException {
        return getURL(getColIdxByName(columnName));

    }

    /**
     * The first warning reported by calls on this <code>CachedRowSetImpl</code>
     * object is returned. Subsequent <code>CachedRowSetImpl</code> warnings will
     * be chained to this <code>SQLWarning</code>. All <code>RowSetWarnings</code>
     * warnings are generated in the disconnected environment and remain a
     * seperate warning chain to that provided by the <code>getWarnings</code>
     * method.
     *
     * <P>The warning chain is automatically cleared each time a new
     * row is read.
     *
     * <P><B>Note:</B> This warning chain only covers warnings caused
     * by <code>CachedRowSet</code> (and their child interface)
     * methods. All <code>SQLWarnings</code> can be obtained using the
     * <code>getWarnings</code> method which tracks warnings generated
     * by the underlying JDBC driver.
     * @return the first SQLWarning or null
     *
     */
    public RowSetWarning getRowSetWarnings() {
        try {
            notifyCursorMoved();
        } catch (SQLException e) {} // mask exception
        return rowsetWarning;
    }


    /**
     * The function tries to isolate the tablename when only setCommand
     * is set and not setTablename is called provided there is only one table
     * name in the query else just leaves the setting of table name as such.
     * If setTablename is set later it will over ride this table name
     * value so retrieved.
     *
     * @return the tablename if only one table in query else return ""
     */
    private String buildTableName(String command) throws SQLException {

        // If we have a query from one table,
        // we set the table name implicitly
        // else user has to explicitly set the table name.

        int indexFrom, indexComma;
        String strTablename ="";
        command = command.trim();

        // Query can be a select, insert or  update

        if(command.toLowerCase().startsWith("select")) {
            // look for "from" keyword, after that look for a
            // comma after from. If comma is there don't set
            // table name else isolate table name.

            indexFrom = command.toLowerCase().indexOf("from");
            indexComma = command.indexOf(',', indexFrom);

            if(indexComma == -1) {
                // implies only one table
                strTablename = (command.substring(indexFrom+"from".length(),command.length())).trim();

                String tabName = strTablename;

                int idxWhere = tabName.toLowerCase().indexOf("where");

                /**
                  * Adding the addtional check for conditions following the table name.
                  * If a condition is found truncate it.
                  **/

                if(idxWhere != -1)
                {
                   tabName = tabName.substring(0,idxWhere).trim();
                }

                strTablename = tabName;

            } else {
                //strTablename="";
            }

        } else if(command.toLowerCase().startsWith("insert")) {
            //strTablename="";
        } else if(command.toLowerCase().startsWith("update")) {
            //strTablename="";
        }
        return strTablename;
    }

    /**
     * Commits all changes performed by the <code>acceptChanges()</code>
     * methods
     *
     * @see java.sql.Connection#commit
     */
    public void commit() throws SQLException {
        conn.commit();
    }

    /**
     * Rolls back all changes performed by the <code>acceptChanges()</code>
     * methods
     *
     * @see java.sql.Connection#rollback
     */
    public void rollback() throws SQLException {
        conn.rollback();
    }

    /**
     * Rolls back all changes performed by the <code>acceptChanges()</code>
     * to the last <code>Savepoint</code> transaction marker.
     *
     * @see java.sql.Connection#rollback(Savepoint)
     */
    public void rollback(Savepoint s) throws SQLException {
        conn.rollback(s);
    }

    /**
     * Unsets the designated parameter to the given int array.
     * This was set using <code>setMatchColumn</code>
     * as the column which will form the basis of the join.
     * <P>
     * The parameter value unset by this method should be same
     * as was set.
     *
     * @param columnIdxes the index into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds or if the columnIdx is
     *  not the same as set using <code>setMatchColumn(int [])</code>
     */
    public void unsetMatchColumn(int[] columnIdxes) throws SQLException {

         int i_val;
         for( int j= 0 ;j < columnIdxes.length; j++) {
            i_val = (Integer.parseInt(iMatchColumns.get(j).toString()));
            if(columnIdxes[j] != i_val) {
               throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols").toString());
            }
         }

         for( int i = 0;i < columnIdxes.length ;i++) {
            iMatchColumns.set(i, -1);
         }
    }

   /**
     * Unsets the designated parameter to the given String array.
     * This was set using <code>setMatchColumn</code>
     * as the column which will form the basis of the join.
     * <P>
     * The parameter value unset by this method should be same
     * as was set.
     *
     * @param columnIdxes the index into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds or if the columnName is
     *  not the same as set using <code>setMatchColumn(String [])</code>
     */
    public void unsetMatchColumn(String[] columnIdxes) throws SQLException {

        for(int j = 0 ;j < columnIdxes.length; j++) {
           if( !columnIdxes[j].equals(strMatchColumns.get(j)) ){
              throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols").toString());
           }
        }

        for(int i = 0 ; i < columnIdxes.length; i++) {
           strMatchColumns.set(i,null);
        }
    }

    /**
     * Retrieves the column name as <code>String</code> array
     * that was set using <code>setMatchColumn(String [])</code>
     * for this rowset.
     *
     * @return a <code>String</code> array object that contains the column names
     *         for the rowset which has this the match columns
     *
     * @throws SQLException if an error occurs or column name is not set
     */
    public String[] getMatchColumnNames() throws SQLException {

        String []str_temp = new String[strMatchColumns.size()];

        if( strMatchColumns.get(0) == null) {
           throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.setmatchcols").toString());
        }

        strMatchColumns.copyInto(str_temp);
        return str_temp;
    }

    /**
     * Retrieves the column id as <code>int</code> array that was set using
     * <code>setMatchColumn(int [])</code> for this rowset.
     *
     * @return a <code>int</code> array object that contains the column ids
     *         for the rowset which has this as the match columns.
     *
     * @throws SQLException if an error occurs or column index is not set
     */
    public int[] getMatchColumnIndexes() throws SQLException {

        Integer []int_temp = new Integer[iMatchColumns.size()];
        int [] i_temp = new int[iMatchColumns.size()];
        int i_val;

        i_val = iMatchColumns.get(0);

        if( i_val == -1 ) {
           throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.setmatchcols").toString());
        }


        iMatchColumns.copyInto(int_temp);

        for(int i = 0; i < int_temp.length; i++) {
           i_temp[i] = (int_temp[i]).intValue();
        }

        return i_temp;
    }

    /**
     * Sets the designated parameter to the given int array.
     * This forms the basis of the join for the
     * <code>JoinRowSet</code> as the column which will form the basis of the
     * join.
     * <P>
     * The parameter value set by this method is stored internally and
     * will be supplied as the appropriate parameter in this rowset's
     * command when the method <code>getMatchColumnIndexes</code> is called.
     *
     * @param columnIdxes the indexes into this rowset
     *        object's internal representation of parameter values; the
     *        first parameter is 0, the second is 1, and so on; must be
     *        <code>0</code> or greater
     * @throws SQLException if an error occurs or the
     *                         parameter index is out of bounds
     */
    public void setMatchColumn(int[] columnIdxes) throws SQLException {

        for(int j = 0 ; j < columnIdxes.length; j++) {
           if( columnIdxes[j] < 0 ) {
              throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols1").toString());
           }
        }
        for(int i = 0 ;i < columnIdxes.length; i++) {
           iMatchColumns.add(i,columnIdxes[i]);
        }
    }

    /**
     * Sets the designated parameter to the given String array.
     *  This forms the basis of the join for the
     * <code>JoinRowSet</code> as the column which will form the basis of the
     * join.
     * <P>
     * The parameter value set by this method is stored internally and
     * will be supplied as the appropriate parameter in this rowset's
     * command when the method <code>getMatchColumn</code> is called.
     *
     * @param columnNames the name of the column into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds
     */
    public void setMatchColumn(String[] columnNames) throws SQLException {

        for(int j = 0; j < columnNames.length; j++) {
           if( columnNames[j] == null || columnNames[j].equals("")) {
              throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols2").toString());
           }
        }
        for( int i = 0; i < columnNames.length; i++) {
           strMatchColumns.add(i,columnNames[i]);
        }
    }


    /**
     * Sets the designated parameter to the given <code>int</code>
     * object.  This forms the basis of the join for the
     * <code>JoinRowSet</code> as the column which will form the basis of the
     * join.
     * <P>
     * The parameter value set by this method is stored internally and
     * will be supplied as the appropriate parameter in this rowset's
     * command when the method <code>getMatchColumn</code> is called.
     *
     * @param columnIdx the index into this rowset
     *        object's internal representation of parameter values; the
     *        first parameter is 0, the second is 1, and so on; must be
     *        <code>0</code> or greater
     * @throws SQLException if an error occurs or the
     *                         parameter index is out of bounds
     */
    public void setMatchColumn(int columnIdx) throws SQLException {
        // validate, if col is ok to be set
        if(columnIdx < 0) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols1").toString());
        } else {
            // set iMatchColumn
            iMatchColumns.set(0, columnIdx);
            //strMatchColumn = null;
        }
    }

    /**
     * Sets the designated parameter to the given <code>String</code>
     * object.  This forms the basis of the join for the
     * <code>JoinRowSet</code> as the column which will form the basis of the
     * join.
     * <P>
     * The parameter value set by this method is stored internally and
     * will be supplied as the appropriate parameter in this rowset's
     * command when the method <code>getMatchColumn</code> is called.
     *
     * @param columnName the name of the column into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds
     */
    public void setMatchColumn(String columnName) throws SQLException {
        // validate, if col is ok to be set
        if(columnName == null || (columnName= columnName.trim()).equals("") ) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.matchcols2").toString());
        } else {
            // set strMatchColumn
            strMatchColumns.set(0, columnName);
            //iMatchColumn = -1;
        }
    }

    /**
     * Unsets the designated parameter to the given <code>int</code>
     * object.  This was set using <code>setMatchColumn</code>
     * as the column which will form the basis of the join.
     * <P>
     * The parameter value unset by this method should be same
     * as was set.
     *
     * @param columnIdx the index into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds or if the columnIdx is
     *  not the same as set using <code>setMatchColumn(int)</code>
     */
    public void unsetMatchColumn(int columnIdx) throws SQLException {
        // check if we are unsetting the SAME column
        if(! iMatchColumns.get(0).equals(Integer.valueOf(columnIdx) )  ) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.unsetmatch").toString());
        } else if(strMatchColumns.get(0) != null) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.unsetmatch1").toString());
        } else {
                // that is, we are unsetting it.
               iMatchColumns.set(0, -1);
        }
    }

    /**
     * Unsets the designated parameter to the given <code>String</code>
     * object.  This was set using <code>setMatchColumn</code>
     * as the column which will form the basis of the join.
     * <P>
     * The parameter value unset by this method should be same
     * as was set.
     *
     * @param columnName the index into this rowset
     *        object's internal representation of parameter values
     * @throws SQLException if an error occurs or the
     *  parameter index is out of bounds or if the columnName is
     *  not the same as set using <code>setMatchColumn(String)</code>
     */
    public void unsetMatchColumn(String columnName) throws SQLException {
        // check if we are unsetting the same column
        columnName = columnName.trim();

        if(!((strMatchColumns.get(0)).equals(columnName))) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.unsetmatch").toString());
        } else if(iMatchColumns.get(0) > 0) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.unsetmatch2").toString());
        } else {
            strMatchColumns.set(0, null);   // that is, we are unsetting it.
        }
    }

    /**
     * Notifies registered listeners that a RowSet object in the given RowSetEvent
     * object has populated a number of additional rows. The <code>numRows</code> parameter
     * ensures that this event will only be fired every <code>numRow</code>.
     * <p>
     * The source of the event can be retrieved with the method event.getSource.
     *
     * @param event a <code>RowSetEvent</code> object that contains the
     *     <code>RowSet</code> object that is the source of the events
     * @param numRows when populating, the number of rows interval on which the
     *     <code>CachedRowSet</code> populated should fire; the default value
     *     is zero; cannot be less than <code>fetchSize</code> or zero
     */
    public void rowSetPopulated(RowSetEvent event, int numRows) throws SQLException {

        if( numRows < 0 || numRows < getFetchSize()) {
           throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.numrows").toString());
        }

        if(size() % numRows == 0) {
            RowSetEvent event_temp = new RowSetEvent(this);
            event = event_temp;
            notifyRowSetChanged();
        }
    }

    /**
     * Populates this <code>CachedRowSet</code> object with data from
     * the given <code>ResultSet</code> object. While related to the <code>populate(ResultSet)</code>
     * method, an additional parameter is provided to allow starting position within
     * the <code>ResultSet</code> from where to populate the CachedRowSet
     * instance.
     *
     * This method is an alternative to the method <code>execute</code>
     * for filling the rowset with data.  The method <code>populate</code>
     * does not require that the properties needed by the method
     * <code>execute</code>, such as the <code>command</code> property,
     * be set. This is true because the method <code>populate</code>
     * is given the <code>ResultSet</code> object from
     * which to get data and thus does not need to use the properties
     * required for setting up a connection and executing this
     * <code>CachedRowSetImpl</code> object's command.
     * <P>
     * After populating this rowset with data, the method
     * <code>populate</code> sets the rowset's metadata and
     * then sends a <code>RowSetChangedEvent</code> object
     * to all registered listeners prior to returning.
     *
     * @param data the <code>ResultSet</code> object containing the data
     *             to be read into this <code>CachedRowSetImpl</code> object
     * @param start the integer specifing the position in the
     *        <code>ResultSet</code> object to popultate the
     *        <code>CachedRowSetImpl</code> object.
     * @throws SQLException if an error occurs; or the max row setting is
     *          violated while populating the RowSet.Also id the start position
     *          is negative.
     * @see #execute
     */
     public void populate(ResultSet data, int start) throws SQLException{

        int rowsFetched;
        Row currentRow;
        int numCols;
        int i;
        Map<String, Class<?>> map = getTypeMap();
        Object obj;
        int mRows;

        cursorPos = 0;
        if(populatecallcount == 0){
            if(start < 0){
               throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.startpos").toString());
            }
            if(getMaxRows() == 0){
               data.absolute(start);
               while(data.next()){
                   totalRows++;
               }
               totalRows++;
            }
            startPos = start;
        }
        populatecallcount = populatecallcount +1;
        resultSet = data;
        if((endPos - startPos) >= getMaxRows() && (getMaxRows() > 0)){
            endPos = prevEndPos;
            pagenotend = false;
            return;
        }

        if((maxRowsreached != getMaxRows() || maxRowsreached != totalRows) && pagenotend) {
           startPrev = start - getPageSize();
        }

        if( pageSize == 0){
           prevEndPos = endPos;
           endPos = start + getMaxRows() ;
        }
        else{
            prevEndPos = endPos;
            endPos = start + getPageSize();
        }


        if (start == 1){
            resultSet.beforeFirst();
        }
        else {
            resultSet.absolute(start -1);
        }
        if( pageSize == 0) {
           rvh = new Vector<Object>(getMaxRows());

        }
        else{
            rvh = new Vector<Object>(getPageSize());
        }

        if (data == null) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.populate").toString());
        }

        // get the meta data for this ResultSet
        RSMD = data.getMetaData();

        // set up the metadata
        RowSetMD = new RowSetMetaDataImpl();
        initMetaData(RowSetMD, RSMD);

        // release the meta-data so that aren't tempted to use it.
        RSMD = null;
        numCols = RowSetMD.getColumnCount();
        mRows = this.getMaxRows();
        rowsFetched = 0;
        currentRow = null;

        if(!data.next() && mRows == 0){
            endPos = prevEndPos;
            pagenotend = false;
            return;
        }

        data.previous();

        while ( data.next()) {

            currentRow = new Row(numCols);
          if(pageSize == 0){
            if ( rowsFetched >= mRows && mRows > 0) {
                rowsetWarning.setNextException(new SQLException("Populating rows "
                + "setting has exceeded max row setting"));
                break;
            }
          }
          else {
              if ( (rowsFetched >= pageSize) ||( maxRowsreached >= mRows && mRows > 0)) {
                rowsetWarning.setNextException(new SQLException("Populating rows "
                + "setting has exceeded max row setting"));
                break;
            }
          }

            for ( i = 1; i <= numCols; i++) {
                /*
                 * check if the user has set a map. If no map
                 * is set then use plain getObject. This lets
                 * us work with drivers that do not support
                 * getObject with a map in fairly sensible way
                 */
                if (map == null) {
                    obj = data.getObject(i);
                } else {
                    obj = data.getObject(i, map);
                }
                /*
                 * the following block checks for the various
                 * types that we have to serialize in order to
                 * store - right now only structs have been tested
                 */
                if (obj instanceof Struct) {
                    obj = new SerialStruct((Struct)obj, map);
                } else if (obj instanceof SQLData) {
                    obj = new SerialStruct((SQLData)obj, map);
                } else if (obj instanceof Blob) {
                    obj = new SerialBlob((Blob)obj);
                } else if (obj instanceof Clob) {
                    obj = new SerialClob((Clob)obj);
                } else if (obj instanceof java.sql.Array) {
                    obj = new SerialArray((java.sql.Array)obj, map);
                }

                currentRow.initColumnObject(i, obj);
            }
            rowsFetched++;
            maxRowsreached++;
            rvh.add(currentRow);
        }
        numRows = rowsFetched ;
        // Also rowsFetched should be equal to rvh.size()
        // notify any listeners that the rowset has changed
        notifyRowSetChanged();

     }

    /**
     * The nextPage gets the next page, that is a <code>CachedRowSetImpl</code> object
     * containing the number of rows specified by page size.
     * @return boolean value true indicating whether there are more pages to come and
     *         false indicating that this is the last page.
     * @throws SQLException if an error occurs or this called before calling populate.
     */
     public boolean nextPage() throws SQLException {

         if (populatecallcount == 0){
             throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.nextpage").toString());
         }
         // Fix for 6554186
         onFirstPage = false;
         if(callWithCon){
            crsReader.setStartPosition(endPos);
            crsReader.readData((RowSetInternal)this);
            resultSet = null;
         }
         else {
            populate(resultSet,endPos);
         }
         return pagenotend;
     }

    /**
     * This is the setter function for setting the size of the page, which specifies
     * how many rows have to be retrived at a time.
     *
     * @param size which is the page size
     * @throws SQLException if size is less than zero or greater than max rows.
     */
     public void setPageSize (int size) throws SQLException {
        if (size < 0) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.pagesize").toString());
        }
        if (size > getMaxRows() && getMaxRows() != 0) {
            throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.pagesize1").toString());
        }
        pageSize = size;
     }

    /**
     * This is the getter function for the size of the page.
     *
     * @return an integer that is the page size.
     */
    public int getPageSize() {
        return pageSize;
    }


    /**
     * Retrieves the data present in the page prior to the page from where it is
     * called.
     * @return boolean value true if it retrieves the previous page, flase if it
     *         is on the first page.
     * @throws SQLException if it is called before populate is called or ResultSet
     *         is of type <code>ResultSet.TYPE_FORWARD_ONLY</code> or if an error
     *         occurs.
     */
    public boolean previousPage() throws SQLException {
        int pS;
        int mR;
        int rem;

        pS = getPageSize();
        mR = maxRowsreached;

        if (populatecallcount == 0){
             throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.nextpage").toString());
         }

        if( !callWithCon){
           if(resultSet.getType() == ResultSet.TYPE_FORWARD_ONLY){
               throw new SQLException (resBundle.handleGetObject("cachedrowsetimpl.fwdonly").toString());
           }
        }

        pagenotend = true;

        if(startPrev < startPos ){
                onFirstPage = true;
               return false;
            }

        if(onFirstPage){
            return false;
        }

        rem = mR % pS;

        if(rem == 0){
            maxRowsreached -= (2 * pS);
            if(callWithCon){
                crsReader.setStartPosition(startPrev);
                crsReader.readData((RowSetInternal)this);
                resultSet = null;
            }
            else {
               populate(resultSet,startPrev);
            }
            return true;
        }
        else
        {
            maxRowsreached -= (pS + rem);
            if(callWithCon){
                crsReader.setStartPosition(startPrev);
                crsReader.readData((RowSetInternal)this);
                resultSet = null;
            }
            else {
               populate(resultSet,startPrev);
            }
            return true;
        }
    }

    /**
     * Goes to the page number passed as the parameter
     * @param page , the page loaded on a call to this function
     * @return true if the page exists false otherwise
     * @throws SQLException if an error occurs
     */
    /*
    public boolean absolutePage(int page) throws SQLException{

        boolean isAbs = true, retVal = true;
        int counter;

        if( page <= 0 ){
            throw new SQLException("Absolute positoin is invalid");
        }
        counter = 0;

        firstPage();
        counter++;
        while((counter < page) && isAbs) {
            isAbs = nextPage();
            counter ++;
        }

        if( !isAbs && counter < page){
            retVal = false;
        }
        else if(counter == page){
            retVal = true;
        }

       return retVal;
    }
    */


    /**
     * Goes to the page number passed as the parameter  from the current page.
     * The parameter can take postive or negative value accordingly.
     * @param page , the page loaded on a call to this function
     * @return true if the page exists false otherwise
     * @throws SQLException if an error occurs
     */
    /*
    public boolean relativePage(int page) throws SQLException {

        boolean isRel = true,retVal = true;
        int counter;

        if(page > 0){
           counter  = 0;
           while((counter < page) && isRel){
              isRel = nextPage();
              counter++;
           }

           if(!isRel && counter < page){
               retVal = false;
           }
           else if( counter == page){
               retVal = true;
           }
           return retVal;
        }
        else {
            counter = page;
            isRel = true;
            while((counter < 0) && isRel){
                isRel = previousPage();
                counter++;
            }

            if( !isRel && counter < 0){
                retVal = false;
            }
            else if(counter == 0){
                retVal = true;
            }
            return retVal;
        }
    }
    */

     /**
     * Retrieves the first page of data as specified by the page size.
     * @return boolean value true if present on first page, false otherwise
     * @throws SQLException if it called before populate or ResultSet is of
     *         type <code>ResultSet.TYPE_FORWARD_ONLY</code> or an error occurs
     */
    /*
    public boolean firstPage() throws SQLException {
           if (populatecallcount == 0){
             throw new SQLException("Populate the data before calling ");
           }
           if( !callWithCon){
              if(resultSet.getType() == ResultSet.TYPE_FORWARD_ONLY) {
                  throw new SQLException("Result of type forward only");
              }
           }
           endPos = 0;
           maxRowsreached = 0;
           pagenotend = true;
           if(callWithCon){
               crsReader.setStartPosition(startPos);
               crsReader.readData((RowSetInternal)this);
               resultSet = null;
           }
           else {
              populate(resultSet,startPos);
           }
           onFirstPage = true;
           return onFirstPage;
    }
    */

    /**
     * Retrives the last page of data as specified by the page size.
     * @return boolean value tur if present on the last page, false otherwise
     * @throws SQLException if called before populate or if an error occurs.
     */
     /*
    public boolean lastPage() throws SQLException{
          int pS;
          int mR;
          int quo;
          int rem;

          pS = getPageSize();
          mR = getMaxRows();

          if(pS == 0){
              onLastPage = true;
              return onLastPage;
          }

          if(getMaxRows() == 0){
              mR = totalRows;
          }

          if (populatecallcount == 0){
             throw new SQLException("Populate the data before calling ");
         }

         onFirstPage = false;

         if((mR % pS) == 0){
             quo = mR / pS;
             int start = startPos + (pS * (quo - 1));
             maxRowsreached = mR - pS;
             if(callWithCon){
                 crsReader.setStartPosition(start);
                 crsReader.readData((RowSetInternal)this);
                 resultSet = null;
             }
             else {
                populate(resultSet,start);
             }
             onLastPage = true;
             return onLastPage;
         }
        else {
              quo = mR /pS;
              rem = mR % pS;
              int start = startPos + (pS * quo);
             maxRowsreached = mR - (rem);
             if(callWithCon){
                 crsReader.setStartPosition(start);
                 crsReader.readData((RowSetInternal)this);
                 resultSet = null;
             }
             else {
                populate(resultSet,start);
             }
             onLastPage = true;
             return onLastPage;
         }
    }
    */

   /**
     * Sets the status for the row on which the cursor is positioned. The insertFlag is used
     * to mention the toggle status for this row
     * @param insertFlag if it is true  - marks this row as inserted
     *                   if it is false - marks it as not a newly inserted row
     * @throws SQLException if an error occurs while doing this operation
     */
    public void setRowInserted(boolean insertFlag) throws SQLException {

        checkCursor();

        if(onInsertRow == true)
          throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidop").toString());

        if( insertFlag ) {
          ((Row)getCurrentRow()).setInserted();
        } else {
          ((Row)getCurrentRow()).clearInserted();
        }
    }

    /**
     * Retrieves the value of the designated <code>SQL XML</code> parameter as a
     * <code>SQLXML</code> object in the Java programming language.
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return a SQLXML object that maps an SQL XML value
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public SQLXML getSQLXML(int columnIndex) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the value of the designated <code>SQL XML</code> parameter as a
     * <code>SQLXML</code> object in the Java programming language.
     * @param colName the name of the column from which to retrieve the value
     * @return a SQLXML object that maps an SQL XML value
     * @throws SQLException if a database access error occurs
     */
    public SQLXML getSQLXML(String colName) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>ResultSet</code> object as a java.sql.RowId object in the Java
     * programming language.
     *
     * @param columnIndex the first column is 1, the second 2, ...
     * @return the column value if the value is a SQL <code>NULL</code> the
     *     value returned is <code>null</code>
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public RowId getRowId(int columnIndex) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the value of the designated column in the current row of this
     * <code>ResultSet</code> object as a java.sql.RowId object in the Java
     * programming language.
     *
     * @param columnName the name of the column
     * @return the column value if the value is a SQL <code>NULL</code> the
     *     value returned is <code>null</code>
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public RowId getRowId(String columnName) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Updates the designated column with a <code>RowId</code> value. The updater
     * methods are used to update column values in the current row or the insert
     * row. The updater methods do not update the underlying database; instead
     * the {@code updateRow} or {@code insertRow} methods are called
     * to update the database.
     *
     * @param columnIndex the first column is 1, the second 2, ...
     * @param x the column value
     * @throws SQLException if a database access occurs
     * @since 1.6
     */
    public void updateRowId(int columnIndex, RowId x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Updates the designated column with a <code>RowId</code> value. The updater
     * methods are used to update column values in the current row or the insert
     * row. The updater methods do not update the underlying database; instead
     * the {@code updateRow} or {@code insertRow} methods are called
     * to update the database.
     *
     * @param columnName the name of the column
     * @param x the column value
     * @throws SQLException if a database access occurs
     * @since 1.6
     */
    public void updateRowId(String columnName, RowId x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the holdability of this ResultSet object
     * @return  either ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT
     * @throws SQLException if a database error occurs
     * @since 1.6
     */
    public int getHoldability() throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves whether this ResultSet object has been closed. A ResultSet is closed if the
     * method close has been called on it, or if it is automatically closed.
     * @return true if this ResultSet object is closed; false if it is still open
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public boolean isClosed() throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * This method is used for updating columns that support National Character sets.
     * It can be used for updating NCHAR,NVARCHAR and LONGNVARCHAR columns.
     * @param columnIndex the first column is 1, the second 2, ...
     * @param nString the value for the column to be updated
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void updateNString(int columnIndex, String nString) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * This method is used for updating columns that support National Character sets.
     * It can be used for updating NCHAR,NVARCHAR and LONGNVARCHAR columns.
     * @param columnName name of the Column
     * @param nString the value for the column to be updated
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void updateNString(String columnName, String nString) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }


    /*o
     * This method is used for updating SQL <code>NCLOB</code>  type that maps
     * to <code>java.sql.Types.NCLOB</code>
     * @param columnIndex the first column is 1, the second 2, ...
     * @param nClob the value for the column to be updated
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void updateNClob(int columnIndex, NClob nClob) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * This method is used for updating SQL <code>NCLOB</code>  type that maps
     * to <code>java.sql.Types.NCLOB</code>
     * @param columnName name of the column
     * @param nClob the value for the column to be updated
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void updateNClob(String columnName, NClob nClob) throws SQLException {
       throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as a <code>NClob</code> object
     * in the Java programming language.
     *
     * @param i the first column is 1, the second is 2, ...
     * @return a <code>NClob</code> object representing the SQL
     *         <code>NCLOB</code> value in the specified column
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public NClob getNClob(int i) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }


   /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as a <code>NClob</code> object
     * in the Java programming language.
     *
     * @param colName the name of the column from which to retrieve the value
     * @return a <code>NClob</code> object representing the SQL <code>NCLOB</code>
     * value in the specified column
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public NClob getNClob(String colName) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    public <T> T unwrap(java.lang.Class<T> iface) throws java.sql.SQLException {
        return null;
    }

    public boolean isWrapperFor(Class<?> interfaces) throws SQLException {
        return false;
    }


   /**
      * Sets the designated parameter to the given <code>java.sql.SQLXML</code> object. The driver converts this to an
      * SQL <code>XML</code> value when it sends it to the database.
      * @param parameterIndex index of the first parameter is 1, the second is 2, ...
      * @param xmlObject a <code>SQLXML</code> object that maps an SQL <code>XML</code> value
      * @throws SQLException if a database access error occurs
      * @since 1.6
      */
     public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
         throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }

   /**
     * Sets the designated parameter to the given <code>java.sql.SQLXML</code> object. The driver converts this to an
     * <code>SQL XML</code> value when it sends it to the database.
     * @param parameterName the name of the parameter
     * @param xmlObject a <code>SQLXML</code> object that maps an <code>SQL XML</code> value
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void setSQLXML(String parameterName, SQLXML xmlObject) throws SQLException {
         throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


    /**
     * Sets the designated parameter to the given <code>java.sql.RowId</code> object. The
     * driver converts this to a SQL <code>ROWID</code> value when it sends it
     * to the database
     *
     * @param parameterIndex the first parameter is 1, the second is 2, ...
     * @param x the parameter value
     * @throws SQLException if a database access error occurs
     *
     * @since 1.6
     */
    public void setRowId(int parameterIndex, RowId x) throws SQLException {
         throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


    /**
    * Sets the designated parameter to the given <code>java.sql.RowId</code> object. The
    * driver converts this to a SQL <code>ROWID</code> when it sends it to the
    * database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @throws SQLException if a database access error occurs
    * @since 1.6
    */
   public void setRowId(String parameterName, RowId x) throws SQLException {
         throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


    /**
     * Sets the designated parameter to a <code>Reader</code> object. The
     * <code>Reader</code> reads the data till end-of-file is reached. The
     * driver does the necessary conversion from Java character format to
     * the national character set in the database.

     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>setNCharacterStream</code> which takes a length parameter.
     *
     * @param parameterIndex of the first parameter is 1, the second is 2, ...
     * @param value the parameter value
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur ; if a database access error occurs; or
     * this method is called on a closed <code>PreparedStatement</code>
     * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
     * @since 1.6
     */
     public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
     }


    /**
    * Sets the designated parameter to a <code>java.sql.NClob</code> object. The object
    * implements the <code>java.sql.NClob</code> interface. This <code>NClob</code>
    * object maps to a SQL <code>NCLOB</code>.
    * @param parameterName the name of the column to be set
    * @param value the parameter value
    * @throws SQLException if the driver does not support national
    *         character sets;  if the driver can detect that a data conversion
    *  error could occur; or if a database access error occurs
    * @since 1.6
    */
    public void setNClob(String parameterName, NClob value) throws SQLException {
         throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


  /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as a
     * <code>java.io.Reader</code> object.
     * It is intended for use when
     * accessing  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * @return a <code>java.io.Reader</code> object that contains the column
     * value; if the value is SQL <code>NULL</code>, the value returned is
     * <code>null</code> in the Java programming language.
     * @param columnIndex the first column is 1, the second is 2, ...
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public java.io.Reader getNCharacterStream(int columnIndex) throws SQLException {
       throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as a
     * <code>java.io.Reader</code> object.
     * It is intended for use when
     * accessing  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * @param columnName the name of the column
     * @return a <code>java.io.Reader</code> object that contains the column
     * value; if the value is SQL <code>NULL</code>, the value returned is
     * <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public java.io.Reader getNCharacterStream(String columnName) throws SQLException {
       throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
     }


    /**
     * Updates the designated column with a <code>java.sql.SQLXML</code> value.
     * The updater
     * methods are used to update column values in the current row or the insert
     * row. The updater methods do not update the underlying database; instead
     * the <code>updateRow</code> or <code>insertRow</code> methods are called
     * to update the database.
     * @param columnIndex the first column is 1, the second 2, ...
     * @param xmlObject the value for the column to be updated
     * @throws SQLException if a database access error occurs
     * @since 1.6
     */
    public void updateSQLXML(int columnIndex, SQLXML xmlObject) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Updates the designated column with a <code>java.sql.SQLXML</code> value.
     * The updater
     * methods are used to update column values in the current row or the insert
     * row. The updater methods do not update the underlying database; instead
     * the <code>updateRow</code> or <code>insertRow</code> methods are called
     * to update the database.
     *
     * @param columnName the name of the column
     * @param xmlObject the column value
     * @throws SQLException if a database access occurs
     * @since 1.6
     */
    public void updateSQLXML(String columnName, SQLXML xmlObject) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

     /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as
     * a <code>String</code> in the Java programming language.
     * It is intended for use when
     * accessing  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return the column value; if the value is SQL <code>NULL</code>, the
     * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public String getNString(int columnIndex) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

    /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as
     * a <code>String</code> in the Java programming language.
     * It is intended for use when
     * accessing  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * @param columnName the SQL name of the column
     * @return the column value; if the value is SQL <code>NULL</code>, the
     * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     * @since 1.6
     */
    public String getNString(String columnName) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
    }

     /**
       * Updates the designated column with a character stream value, which will
       * have the specified number of bytes. The driver does the necessary conversion
       * from Java character format to the national character set in the database.
       * It is intended for use when updating NCHAR,NVARCHAR and LONGNVARCHAR columns.
       * The updater methods are used to update column values in the current row or
       * the insert row. The updater methods do not update the underlying database;
       * instead the updateRow or insertRow methods are called to update the database.
       *
       * @param columnIndex - the first column is 1, the second is 2, ...
       * @param x - the new column value
       * @param length - the length of the stream
       * @exception SQLException if a database access error occurs
       * @since 1.6
       */
       public void updateNCharacterStream(int columnIndex,
                            java.io.Reader x,
                            long length)
                            throws SQLException {
          throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
       }

     /**
       * Updates the designated column with a character stream value, which will
       * have the specified number of bytes. The driver does the necessary conversion
       * from Java character format to the national character set in the database.
       * It is intended for use when updating NCHAR,NVARCHAR and LONGNVARCHAR columns.
       * The updater methods are used to update column values in the current row or
       * the insert row. The updater methods do not update the underlying database;
       * instead the updateRow or insertRow methods are called to update the database.
       *
       * @param columnName - name of the Column
       * @param x - the new column value
       * @param length - the length of the stream
       * @exception SQLException if a database access error occurs
       * @since 1.6
       */
       public void updateNCharacterStream(String columnName,
                            java.io.Reader x,
                            long length)
                            throws SQLException {
          throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.opnotysupp").toString());
       }

     /**
     * Updates the designated column with a character stream value.   The
     * driver does the necessary conversion from Java character format to
     * the national character set in the database.
     * It is intended for use when
     * updating  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateNCharacterStream</code> which takes a length parameter.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code> or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNCharacterStream(int columnIndex,
                             java.io.Reader x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with a character stream value.  The
     * driver does the necessary conversion from Java character format to
     * the national character set in the database.
     * It is intended for use when
     * updating  <code>NCHAR</code>,<code>NVARCHAR</code>
     * and <code>LONGNVARCHAR</code> columns.
     *
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateNCharacterStream</code> which takes a length parameter.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param reader the <code>java.io.Reader</code> object containing
     *        the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code> or this method is called on a closed result set
      * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNCharacterStream(String columnLabel,
                             java.io.Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

//////////////////////////

    /**
     * Updates the designated column using the given input stream, which
     * will have the specified number of bytes.
     * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.InputStream</code>. Data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from ASCII to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param inputStream An object that contains the data to set the parameter
     * value to.
     * @param length the number of bytes in the parameter data.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBlob(int columnIndex, InputStream inputStream, long length) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given input stream, which
     * will have the specified number of bytes.
     * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.InputStream</code>. Data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from ASCII to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
     * @param inputStream An object that contains the data to set the parameter
     * value to.
     * @param length the number of bytes in the parameter data.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBlob(String columnLabel, InputStream inputStream, long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given input stream.
     * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.InputStream</code>. Data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from ASCII to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     *
     *  <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateBlob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param inputStream An object that contains the data to set the parameter
     * value to.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBlob(int columnIndex, InputStream inputStream) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given input stream.
     * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.InputStream</code>. Data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from ASCII to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     *   <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateBlob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param inputStream An object that contains the data to set the parameter
     * value to.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBlob(String columnLabel, InputStream inputStream) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object, which is the given number of characters long.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param reader An object that contains the data to set the parameter value to.
     * @param length the number of characters in the parameter data.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateClob(int columnIndex,  Reader reader, long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object, which is the given number of characters long.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
     * @param reader An object that contains the data to set the parameter value to.
     * @param length the number of characters in the parameter data.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateClob(String columnLabel,  Reader reader, long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

   /**
     * Updates the designated column using the given <code>Reader</code>
     * object.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     *   <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateClob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param reader An object that contains the data to set the parameter value to.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateClob(int columnIndex,  Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     *  <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateClob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param reader An object that contains the data to set the parameter value to.
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateClob(String columnLabel,  Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

   /**
     * Updates the designated column using the given <code>Reader</code>
     * object, which is the given number of characters long.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second 2, ...
     * @param reader An object that contains the data to set the parameter value to.
     * @param length the number of characters in the parameter data.
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur; this method is called on a closed result set,
     * if a database access error occurs or
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNClob(int columnIndex,  Reader reader, long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object, which is the given number of characters long.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
     * @param reader An object that contains the data to set the parameter value to.
     * @param length the number of characters in the parameter data.
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur; this method is called on a closed result set;
     *  if a database access error occurs or
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNClob(String columnLabel,  Reader reader, long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateNClob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second 2, ...
     * @param reader An object that contains the data to set the parameter value to.
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur; this method is called on a closed result set,
     * if a database access error occurs or
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNClob(int columnIndex,  Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column using the given <code>Reader</code>
     * object.
     * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
     * parameter, it may be more practical to send it via a
     * <code>java.io.Reader</code> object. The data will be read from the stream
     * as needed until end-of-file is reached.  The JDBC driver will
     * do any necessary conversion from UNICODE to the database char format.
     *
     * <P><B>Note:</B> This stream object can either be a standard
     * Java stream object or your own subclass that implements the
     * standard interface.
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateNClob</code> which takes a length parameter.
     * <p>
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param reader An object that contains the data to set the parameter value to.
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur; this method is called on a closed result set;
     *  if a database access error occurs or
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateNClob(String columnLabel,  Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

        /**
     * Updates the designated column with an ascii stream value, which will have
     * the specified number of bytes.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateAsciiStream(int columnIndex,
                           java.io.InputStream x,
                           long length) throws SQLException {

    }

    /**
     * Updates the designated column with a binary stream value, which will have
     * the specified number of bytes.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBinaryStream(int columnIndex,
                            java.io.InputStream x,
                            long length) throws SQLException {
    }

    /**
     * Updates the designated column with a character stream value, which will have
     * the specified number of bytes.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateCharacterStream(int columnIndex,
                             java.io.Reader x,
                             long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with a character stream value, which will have
     * the specified number of bytes.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param reader the <code>java.io.Reader</code> object containing
     *        the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateCharacterStream(String columnLabel,
                             java.io.Reader reader,
                             long length) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }
     /**
     * Updates the designated column with an ascii stream value, which will have
     * the specified number of bytes..
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateAsciiStream(String columnLabel,
                           java.io.InputStream x,
                           long length) throws SQLException {
    }

    /**
     * Updates the designated column with a binary stream value, which will have
     * the specified number of bytes.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the label is the name of the column
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBinaryStream(String columnLabel,
                            java.io.InputStream x,
                            long length) throws SQLException {
    }

    /**
     * Updates the designated column with a binary stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateBinaryStream</code> which takes a length parameter.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBinaryStream(int columnIndex,
                            java.io.InputStream x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }


    /**
     * Updates the designated column with a binary stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateBinaryStream</code> which takes a length parameter.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateBinaryStream(String columnLabel,
                            java.io.InputStream x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with a character stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateCharacterStream</code> which takes a length parameter.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateCharacterStream(int columnIndex,
                             java.io.Reader x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with a character stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateCharacterStream</code> which takes a length parameter.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param reader the <code>java.io.Reader</code> object containing
     *        the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateCharacterStream(String columnLabel,
                             java.io.Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with an ascii stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateAsciiStream</code> which takes a length parameter.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateAsciiStream(int columnIndex,
                           java.io.InputStream x) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }

    /**
     * Updates the designated column with an ascii stream value.
     * The updater methods are used to update column values in the
     * current row or the insert row.  The updater methods do not
     * update the underlying database; instead the <code>updateRow</code> or
     * <code>insertRow</code> methods are called to update the database.
     *
     * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
     * it might be more efficient to use a version of
     * <code>updateAsciiStream</code> which takes a length parameter.
     *
     * @param columnLabel the label for the column specified with the SQL AS clause.  If the SQL AS clause was not specified, then the la
bel is the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs,
     * the result set concurrency is <code>CONCUR_READ_ONLY</code>
     * or this method is called on a closed result set
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     * @since 1.6
     */
    public void updateAsciiStream(String columnLabel,
                           java.io.InputStream x) throws SQLException {

    }

   /**
  * Sets the designated parameter to the given <code>java.net.URL</code> value.
  * The driver converts this to an SQL <code>DATALINK</code> value
  * when it sends it to the database.
  *
  * @param parameterIndex the first parameter is 1, the second is 2, ...
  * @param x the <code>java.net.URL</code> object to be set
  * @exception SQLException if a database access error occurs or
  * this method is called on a closed <code>PreparedStatement</code>
  * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
  * @since 1.4
  */
  public void setURL(int parameterIndex, java.net.URL x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

  /**
  * Sets the designated parameter to a <code>Reader</code> object.
  * This method differs from the <code>setCharacterStream (int, Reader)</code> method
  * because it informs the driver that the parameter value should be sent to
  * the server as a <code>NCLOB</code>.  When the <code>setCharacterStream</code> method is used, the
  * driver may have to do extra work to determine whether the parameter
  * data should be sent to the server as a <code>LONGNVARCHAR</code> or a <code>NCLOB</code>
  * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
  * it might be more efficient to use a version of
  * <code>setNClob</code> which takes a length parameter.
  *
  * @param parameterIndex index of the first parameter is 1, the second is 2, ...
  * @param reader An object that contains the data to set the parameter value to.
  * @throws SQLException if parameterIndex does not correspond to a parameter
  * marker in the SQL statement;
  * if the driver does not support national character sets;
  * if the driver can detect that a data conversion
  *  error could occur;  if a database access error occurs or
  * this method is called on a closed <code>PreparedStatement</code>
  * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
  *
  * @since 1.6
  */
  public void setNClob(int parameterIndex, Reader reader)
    throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

  /**
  * Sets the designated parameter to a <code>Reader</code> object.  The <code>reader</code> must contain  the number
             * of characters specified by length otherwise a <code>SQLException</code> will be
            * generated when the <code>CallableStatement</code> is executed.
            * This method differs from the <code>setCharacterStream (int, Reader, int)</code> method
            * because it informs the driver that the parameter value should be sent to
            * the server as a <code>NCLOB</code>.  When the <code>setCharacterStream</code> method is used, the
            * driver may have to do extra work to determine whether the parameter
            * data should be send to the server as a <code>LONGNVARCHAR</code> or a <code>NCLOB</code>
            *
            * @param parameterName the name of the parameter to be set
            * @param reader An object that contains the data to set the parameter value to.
            * @param length the number of characters in the parameter data.
            * @throws SQLException if parameterIndex does not correspond to a parameter
            * marker in the SQL statement; if the length specified is less than zero;
            * if the driver does not support national
            *         character sets;  if the driver can detect that a data conversion
            *  error could occur; if a database access error occurs or
            * this method is called on a closed <code>CallableStatement</code>
            * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
            * this method
            * @since 1.6
            */
            public void setNClob(String parameterName, Reader reader, long length)
    throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
  * Sets the designated parameter to a <code>Reader</code> object.
  * This method differs from the <code>setCharacterStream (int, Reader)</code> method
  * because it informs the driver that the parameter value should be sent to
  * the server as a <code>NCLOB</code>.  When the <code>setCharacterStream</code> method is used, the
  * driver may have to do extra work to determine whether the parameter
  * data should be send to the server as a <code>LONGNVARCHAR</code> or a <code>NCLOB</code>
  * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
  * it might be more efficient to use a version of
  * <code>setNClob</code> which takes a length parameter.
  *
  * @param parameterName the name of the parameter
  * @param reader An object that contains the data to set the parameter value to.
  * @throws SQLException if the driver does not support national character sets;
  * if the driver can detect that a data conversion
  *  error could occur;  if a database access error occurs or
  * this method is called on a closed <code>CallableStatement</code>
  * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
  *
  * @since 1.6
  */
  public void setNClob(String parameterName, Reader reader)
    throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


    /**
     * Sets the designated parameter to a <code>Reader</code> object.  The reader must contain  the number
     * of characters specified by length otherwise a <code>SQLException</code> will be
     * generated when the <code>PreparedStatement</code> is executed.
     * This method differs from the <code>setCharacterStream (int, Reader, int)</code> method
     * because it informs the driver that the parameter value should be sent to
     * the server as a <code>NCLOB</code>.  When the <code>setCharacterStream</code> method is used, the
     * driver may have to do extra work to determine whether the parameter
     * data should be sent to the server as a <code>LONGNVARCHAR</code> or a <code>NCLOB</code>
     * @param parameterIndex index of the first parameter is 1, the second is 2, ...
     * @param reader An object that contains the data to set the parameter value to.
     * @param length the number of characters in the parameter data.
     * @throws SQLException if parameterIndex does not correspond to a parameter
     * marker in the SQL statement; if the length specified is less than zero;
     * if the driver does not support national character sets;
     * if the driver can detect that a data conversion
     *  error could occur;  if a database access error occurs or
     * this method is called on a closed <code>PreparedStatement</code>
     * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
     *
     * @since 1.6
     */
     public void setNClob(int parameterIndex, Reader reader, long length)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


    /**
     * Sets the designated parameter to a <code>java.sql.NClob</code> object. The driver converts this to
a
     * SQL <code>NCLOB</code> value when it sends it to the database.
     * @param parameterIndex of the first parameter is 1, the second is 2, ...
     * @param value the parameter value
     * @throws SQLException if the driver does not support national
     *         character sets;  if the driver can detect that a data conversion
     *  error could occur ; or if a database access error occurs
     * @since 1.6
     */
     public void setNClob(int parameterIndex, NClob value) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


   /**
  * Sets the designated parameter to the given <code>String</code> object.
  * The driver converts this to a SQL <code>NCHAR</code> or
  * <code>NVARCHAR</code> or <code>LONGNVARCHAR</code> value
  * (depending on the argument's
  * size relative to the driver's limits on <code>NVARCHAR</code> values)
  * when it sends it to the database.
  *
  * @param parameterIndex of the first parameter is 1, the second is 2, ...
  * @param value the parameter value
  * @throws SQLException if the driver does not support national
  *         character sets;  if the driver can detect that a data conversion
  *  error could occur ; or if a database access error occurs
  * @since 1.6
  */
  public void setNString(int parameterIndex, String value) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
  * Sets the designated parameter to the given <code>String</code> object.
  * The driver converts this to a SQL <code>NCHAR</code> or
  * <code>NVARCHAR</code> or <code>LONGNVARCHAR</code>
  * @param parameterName the name of the column to be set
  * @param value the parameter value
  * @throws SQLException if the driver does not support national
  *         character sets;  if the driver can detect that a data conversion
  *  error could occur; or if a database access error occurs
  * @since 1.6
  */
 public void setNString(String parameterName, String value)
         throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
  * Sets the designated parameter to a <code>Reader</code> object. The
  * <code>Reader</code> reads the data till end-of-file is reached. The
  * driver does the necessary conversion from Java character format to
  * the national character set in the database.
  * @param parameterIndex of the first parameter is 1, the second is 2, ...
  * @param value the parameter value
  * @param length the number of characters in the parameter data.
  * @throws SQLException if the driver does not support national
  *         character sets;  if the driver can detect that a data conversion
  *  error could occur ; or if a database access error occurs
  * @since 1.6
  */
  public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
  * Sets the designated parameter to a <code>Reader</code> object. The
  * <code>Reader</code> reads the data till end-of-file is reached. The
  * driver does the necessary conversion from Java character format to
  * the national character set in the database.
  * @param parameterName the name of the column to be set
  * @param value the parameter value
  * @param length the number of characters in the parameter data.
  * @throws SQLException if the driver does not support national
  *         character sets;  if the driver can detect that a data conversion
  *  error could occur; or if a database access error occurs
  * @since 1.6
  */
 public void setNCharacterStream(String parameterName, Reader value, long length)
         throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

  /**
  * Sets the designated parameter to a <code>Reader</code> object. The
  * <code>Reader</code> reads the data till end-of-file is reached. The
  * driver does the necessary conversion from Java character format to
  * the national character set in the database.

  * <P><B>Note:</B> This stream object can either be a standard
  * Java stream object or your own subclass that implements the
  * standard interface.
  * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
  * it might be more efficient to use a version of
  * <code>setNCharacterStream</code> which takes a length parameter.
  *
  * @param parameterName the name of the parameter
  * @param value the parameter value
  * @throws SQLException if the driver does not support national
  *         character sets;  if the driver can detect that a data conversion
  *  error could occur ; if a database access error occurs; or
  * this method is called on a closed <code>CallableStatement</code>
  * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
  * @since 1.6
  */
  public void setNCharacterStream(String parameterName, Reader value) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

  /**
    * Sets the designated parameter to the given <code>java.sql.Timestamp</code> value,
    * using the given <code>Calendar</code> object.  The driver uses
    * the <code>Calendar</code> object to construct an SQL <code>TIMESTAMP</code> value,
    * which the driver then sends to the database.  With a
    * a <code>Calendar</code> object, the driver can calculate the timestamp
    * taking into account a custom timezone.  If no
    * <code>Calendar</code> object is specified, the driver uses the default
    * timezone, which is that of the virtual machine running the application.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @param cal the <code>Calendar</code> object the driver will use
    *            to construct the timestamp
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getTimestamp
    * @since 1.4
    */
    public void setTimestamp(String parameterName, java.sql.Timestamp x, Calendar cal)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

    /**
    * Sets the designated parameter to a <code>Reader</code> object.  The <code>reader</code> must contain  the number
               * of characters specified by length otherwise a <code>SQLException</code> will be
               * generated when the <code>CallableStatement</code> is executed.
              * This method differs from the <code>setCharacterStream (int, Reader, int)</code> method
              * because it informs the driver that the parameter value should be sent to
              * the server as a <code>CLOB</code>.  When the <code>setCharacterStream</code> method is used, the
              * driver may have to do extra work to determine whether the parameter
              * data should be send to the server as a <code>LONGVARCHAR</code> or a <code>CLOB</code>
              * @param parameterName the name of the parameter to be set
              * @param reader An object that contains the data to set the parameter value to.
              * @param length the number of characters in the parameter data.
              * @throws SQLException if parameterIndex does not correspond to a parameter
              * marker in the SQL statement; if the length specified is less than zero;
              * a database access error occurs or
              * this method is called on a closed <code>CallableStatement</code>
              * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
              * this method
              *
              * @since 1.6
              */
      public  void setClob(String parameterName, Reader reader, long length)
      throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


  /**
    * Sets the designated parameter to the given <code>java.sql.Clob</code> object.
    * The driver converts this to an SQL <code>CLOB</code> value when it
    * sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x a <code>Clob</code> object that maps an SQL <code>CLOB</code> value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.6
    */
    public void setClob (String parameterName, Clob x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to a <code>Reader</code> object.
    * This method differs from the <code>setCharacterStream (int, Reader)</code> method
    * because it informs the driver that the parameter value should be sent to
    * the server as a <code>CLOB</code>.  When the <code>setCharacterStream</code> method is used, the
    * driver may have to do extra work to determine whether the parameter
    * data should be send to the server as a <code>LONGVARCHAR</code> or a <code>CLOB</code>
    *
    * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
    * it might be more efficient to use a version of
    * <code>setClob</code> which takes a length parameter.
    *
    * @param parameterName the name of the parameter
    * @param reader An object that contains the data to set the parameter value to.
    * @throws SQLException if a database access error occurs or this method is called on
    * a closed <code>CallableStatement</code>
    *
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    * @since 1.6
    */
    public void setClob(String parameterName, Reader reader)
      throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given <code>java.sql.Date</code> value
    * using the default time zone of the virtual machine that is running
    * the application.
    * The driver converts this
    * to an SQL <code>DATE</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getDate
    * @since 1.4
    */
    public void setDate(String parameterName, java.sql.Date x)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given <code>java.sql.Date</code> value,
    * using the given <code>Calendar</code> object.  The driver uses
    * the <code>Calendar</code> object to construct an SQL <code>DATE</code> value,
    * which the driver then sends to the database.  With a
    * a <code>Calendar</code> object, the driver can calculate the date
    * taking into account a custom timezone.  If no
    * <code>Calendar</code> object is specified, the driver uses the default
    * timezone, which is that of the virtual machine running the application.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @param cal the <code>Calendar</code> object the driver will use
    *            to construct the date
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getDate
    * @since 1.4
    */
   public void setDate(String parameterName, java.sql.Date x, Calendar cal)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given <code>java.sql.Time</code> value.
    * The driver converts this
    * to an SQL <code>TIME</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getTime
    * @since 1.4
    */
   public void setTime(String parameterName, java.sql.Time x)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given <code>java.sql.Time</code> value,
    * using the given <code>Calendar</code> object.  The driver uses
    * the <code>Calendar</code> object to construct an SQL <code>TIME</code> value,
    * which the driver then sends to the database.  With a
    * a <code>Calendar</code> object, the driver can calculate the time
    * taking into account a custom timezone.  If no
    * <code>Calendar</code> object is specified, the driver uses the default
    * timezone, which is that of the virtual machine running the application.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @param cal the <code>Calendar</code> object the driver will use
    *            to construct the time
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getTime
    * @since 1.4
    */
   public void setTime(String parameterName, java.sql.Time x, Calendar cal)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

   /**
   * Sets the designated parameter to a <code>Reader</code> object.
   * This method differs from the <code>setCharacterStream (int, Reader)</code> method
   * because it informs the driver that the parameter value should be sent to
   * the server as a <code>CLOB</code>.  When the <code>setCharacterStream</code> method is used, the
   * driver may have to do extra work to determine whether the parameter
   * data should be sent to the server as a <code>LONGVARCHAR</code> or a <code>CLOB</code>
   *
   * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
   * it might be more efficient to use a version of
   * <code>setClob</code> which takes a length parameter.
   *
   * @param parameterIndex index of the first parameter is 1, the second is 2, ...
   * @param reader An object that contains the data to set the parameter value to.
   * @throws SQLException if a database access error occurs, this method is called on
   * a closed <code>PreparedStatement</code>or if parameterIndex does not correspond to a parameter
   * marker in the SQL statement
   *
   * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
   * @since 1.6
   */
   public void setClob(int parameterIndex, Reader reader)
     throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

    /**
   * Sets the designated parameter to a <code>Reader</code> object.  The reader must contain  the number
   * of characters specified by length otherwise a <code>SQLException</code> will be
   * generated when the <code>PreparedStatement</code> is executed.
   *This method differs from the <code>setCharacterStream (int, Reader, int)</code> method
   * because it informs the driver that the parameter value should be sent to
   * the server as a <code>CLOB</code>.  When the <code>setCharacterStream</code> method is used, the
   * driver may have to do extra work to determine whether the parameter
   * data should be sent to the server as a <code>LONGVARCHAR</code> or a <code>CLOB</code>
   * @param parameterIndex index of the first parameter is 1, the second is 2, ...
   * @param reader An object that contains the data to set the parameter value to.
   * @param length the number of characters in the parameter data.
   * @throws SQLException if a database access error occurs, this method is called on
   * a closed <code>PreparedStatement</code>, if parameterIndex does not correspond to a parameter
   * marker in the SQL statement, or if the length specified is less than zero.
   *
   * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
   * @since 1.6
   */
   public void setClob(int parameterIndex, Reader reader, long length)
     throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to a <code>InputStream</code> object.  The inputstream must contain  the number
    * of characters specified by length otherwise a <code>SQLException</code> will be
    * generated when the <code>PreparedStatement</code> is executed.
    * This method differs from the <code>setBinaryStream (int, InputStream, int)</code>
    * method because it informs the driver that the parameter value should be
    * sent to the server as a <code>BLOB</code>.  When the <code>setBinaryStream</code> method is used,
    * the driver may have to do extra work to determine whether the parameter
    * data should be sent to the server as a <code>LONGVARBINARY</code> or a <code>BLOB</code>
    * @param parameterIndex index of the first parameter is 1,
    * the second is 2, ...
    * @param inputStream An object that contains the data to set the parameter
    * value to.
    * @param length the number of bytes in the parameter data.
    * @throws SQLException if a database access error occurs,
    * this method is called on a closed <code>PreparedStatement</code>,
    * if parameterIndex does not correspond
    * to a parameter marker in the SQL statement,  if the length specified
    * is less than zero or if the number of bytes in the inputstream does not match
    * the specified length.
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    *
    * @since 1.6
    */
    public void setBlob(int parameterIndex, InputStream inputStream, long length)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to a <code>InputStream</code> object.
    * This method differs from the <code>setBinaryStream (int, InputStream)</code>
    * method because it informs the driver that the parameter value should be
    * sent to the server as a <code>BLOB</code>.  When the <code>setBinaryStream</code> method is used,
    * the driver may have to do extra work to determine whether the parameter
    * data should be sent to the server as a <code>LONGVARBINARY</code> or a <code>BLOB</code>
    *
    * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
    * it might be more efficient to use a version of
    * <code>setBlob</code> which takes a length parameter.
    *
    * @param parameterIndex index of the first parameter is 1,
    * the second is 2, ...
    * @param inputStream An object that contains the data to set the parameter
    * value to.
    * @throws SQLException if a database access error occurs,
    * this method is called on a closed <code>PreparedStatement</code> or
    * if parameterIndex does not correspond
    * to a parameter marker in the SQL statement,
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    *
    * @since 1.6
    */
    public void setBlob(int parameterIndex, InputStream inputStream)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to a <code>InputStream</code> object.  The <code>inputstream</code> must contain  the number
     * of characters specified by length, otherwise a <code>SQLException</code> will be
     * generated when the <code>CallableStatement</code> is executed.
     * This method differs from the <code>setBinaryStream (int, InputStream, int)</code>
     * method because it informs the driver that the parameter value should be
     * sent to the server as a <code>BLOB</code>.  When the <code>setBinaryStream</code> method is used,
     * the driver may have to do extra work to determine whether the parameter
     * data should be sent to the server as a <code>LONGVARBINARY</code> or a <code>BLOB</code>
     *
     * @param parameterName the name of the parameter to be set
     * the second is 2, ...
     *
     * @param inputStream An object that contains the data to set the parameter
     * value to.
     * @param length the number of bytes in the parameter data.
     * @throws SQLException  if parameterIndex does not correspond
     * to a parameter marker in the SQL statement,  or if the length specified
     * is less than zero; if the number of bytes in the inputstream does not match
     * the specified length; if a database access error occurs or
     * this method is called on a closed <code>CallableStatement</code>
     * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
     * this method
     *
     * @since 1.6
     */
     public void setBlob(String parameterName, InputStream inputStream, long length)
        throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given <code>java.sql.Blob</code> object.
    * The driver converts this to an SQL <code>BLOB</code> value when it
    * sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x a <code>Blob</code> object that maps an SQL <code>BLOB</code> value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.6
    */
   public void setBlob (String parameterName, Blob x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to a <code>InputStream</code> object.
    * This method differs from the <code>setBinaryStream (int, InputStream)</code>
    * method because it informs the driver that the parameter value should be
    * sent to the server as a <code>BLOB</code>.  When the <code>setBinaryStream</code> method is used,
    * the driver may have to do extra work to determine whether the parameter
    * data should be send to the server as a <code>LONGVARBINARY</code> or a <code>BLOB</code>
    *
    * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
    * it might be more efficient to use a version of
    * <code>setBlob</code> which takes a length parameter.
    *
    * @param parameterName the name of the parameter
    * @param inputStream An object that contains the data to set the parameter
    * value to.
    * @throws SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    *
    * @since 1.6
    */
    public void setBlob(String parameterName, InputStream inputStream)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

    /**
    * Sets the value of the designated parameter with the given object. The second
    * argument must be an object type; for integral values, the
    * <code>java.lang</code> equivalent objects should be used.
    *
    * <p>The given Java object will be converted to the given targetSqlType
    * before being sent to the database.
    *
    * If the object has a custom mapping (is of a class implementing the
    * interface <code>SQLData</code>),
    * the JDBC driver should call the method <code>SQLData.writeSQL</code> to write it
    * to the SQL data stream.
    * If, on the other hand, the object is of a class implementing
    * <code>Ref</code>, <code>Blob</code>, <code>Clob</code>,  <code>NClob</code>,
    *  <code>Struct</code>, <code>java.net.URL</code>,
    * or <code>Array</code>, the driver should pass it to the database as a
    * value of the corresponding SQL type.
    * <P>
    * Note that this method may be used to pass datatabase-
    * specific abstract data types.
    *
    * @param parameterName the name of the parameter
    * @param x the object containing the input parameter value
    * @param targetSqlType the SQL type (as defined in java.sql.Types) to be
    * sent to the database. The scale argument may further qualify this type.
    * @param scale for java.sql.Types.DECIMAL or java.sql.Types.NUMERIC types,
    *          this is the number of digits after the decimal point.  For all other
    *          types, this value will be ignored.
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if <code>targetSqlType</code> is
    * a <code>ARRAY</code>, <code>BLOB</code>, <code>CLOB</code>,
    * <code>DATALINK</code>, <code>JAVA_OBJECT</code>, <code>NCHAR</code>,
    * <code>NCLOB</code>, <code>NVARCHAR</code>, <code>LONGNVARCHAR</code>,
    *  <code>REF</code>, <code>ROWID</code>, <code>SQLXML</code>
    * or  <code>STRUCT</code> data type and the JDBC driver does not support
    * this data type
    * @see Types
    * @see #getObject
    * @since 1.4
    */
    public void setObject(String parameterName, Object x, int targetSqlType, int scale)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the value of the designated parameter with the given object.
    * This method is like the method <code>setObject</code>
    * above, except that it assumes a scale of zero.
    *
    * @param parameterName the name of the parameter
    * @param x the object containing the input parameter value
    * @param targetSqlType the SQL type (as defined in java.sql.Types) to be
    *                      sent to the database
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if <code>targetSqlType</code> is
    * a <code>ARRAY</code>, <code>BLOB</code>, <code>CLOB</code>,
    * <code>DATALINK</code>, <code>JAVA_OBJECT</code>, <code>NCHAR</code>,
    * <code>NCLOB</code>, <code>NVARCHAR</code>, <code>LONGNVARCHAR</code>,
    *  <code>REF</code>, <code>ROWID</code>, <code>SQLXML</code>
    * or  <code>STRUCT</code> data type and the JDBC driver does not support
    * this data type
    * @see #getObject
    * @since 1.4
    */
    public void setObject(String parameterName, Object x, int targetSqlType)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
   * Sets the value of the designated parameter with the given object.
   * The second parameter must be of type <code>Object</code>; therefore, the
   * <code>java.lang</code> equivalent objects should be used for built-in types.
   *
   * <p>The JDBC specification specifies a standard mapping from
   * Java <code>Object</code> types to SQL types.  The given argument
   * will be converted to the corresponding SQL type before being
   * sent to the database.
   *
   * <p>Note that this method may be used to pass datatabase-
   * specific abstract data types, by using a driver-specific Java
   * type.
   *
   * If the object is of a class implementing the interface <code>SQLData</code>,
   * the JDBC driver should call the method <code>SQLData.writeSQL</code>
   * to write it to the SQL data stream.
   * If, on the other hand, the object is of a class implementing
   * <code>Ref</code>, <code>Blob</code>, <code>Clob</code>,  <code>NClob</code>,
   *  <code>Struct</code>, <code>java.net.URL</code>,
   * or <code>Array</code>, the driver should pass it to the database as a
   * value of the corresponding SQL type.
   * <P>
   * This method throws an exception if there is an ambiguity, for example, if the
   * object is of a class implementing more than one of the interfaces named above.
   *
   * @param parameterName the name of the parameter
   * @param x the object containing the input parameter value
   * @exception SQLException if a database access error occurs,
   * this method is called on a closed <code>CallableStatement</code> or if the given
   *            <code>Object</code> parameter is ambiguous
   * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
   * this method
   * @see #getObject
   * @since 1.4
   */
   public void setObject(String parameterName, Object x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

    /**
    * Sets the designated parameter to the given input stream, which will have
    * the specified number of bytes.
    * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
    * parameter, it may be more practical to send it via a
    * <code>java.io.InputStream</code>. Data will be read from the stream
    * as needed until end-of-file is reached.  The JDBC driver will
    * do any necessary conversion from ASCII to the database char format.
    *
    * <P><B>Note:</B> This stream object can either be a standard
    * Java stream object or your own subclass that implements the
    * standard interface.
    *
    * @param parameterName the name of the parameter
    * @param x the Java input stream that contains the ASCII parameter value
    * @param length the number of bytes in the stream
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setAsciiStream(String parameterName, java.io.InputStream x, int length)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given input stream, which will have
    * the specified number of bytes.
    * When a very large binary value is input to a <code>LONGVARBINARY</code>
    * parameter, it may be more practical to send it via a
    * <code>java.io.InputStream</code> object. The data will be read from the stream
    * as needed until end-of-file is reached.
    *
    * <P><B>Note:</B> This stream object can either be a standard
    * Java stream object or your own subclass that implements the
    * standard interface.
    *
    * @param parameterName the name of the parameter
    * @param x the java input stream which contains the binary parameter value
    * @param length the number of bytes in the stream
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setBinaryStream(String parameterName, java.io.InputStream x,
                        int length) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


  /**
    * Sets the designated parameter to the given <code>Reader</code>
    * object, which is the given number of characters long.
    * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
    * parameter, it may be more practical to send it via a
    * <code>java.io.Reader</code> object. The data will be read from the stream
    * as needed until end-of-file is reached.  The JDBC driver will
    * do any necessary conversion from UNICODE to the database char format.
    *
    * <P><B>Note:</B> This stream object can either be a standard
    * Java stream object or your own subclass that implements the
    * standard interface.
    *
    * @param parameterName the name of the parameter
    * @param reader the <code>java.io.Reader</code> object that
    *        contains the UNICODE data used as the designated parameter
    * @param length the number of characters in the stream
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setCharacterStream(String parameterName,
                           java.io.Reader reader,
                           int length) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


  /**
   * Sets the designated parameter to the given input stream.
   * When a very large ASCII value is input to a <code>LONGVARCHAR</code>
   * parameter, it may be more practical to send it via a
   * <code>java.io.InputStream</code>. Data will be read from the stream
   * as needed until end-of-file is reached.  The JDBC driver will
   * do any necessary conversion from ASCII to the database char format.
   *
   * <P><B>Note:</B> This stream object can either be a standard
   * Java stream object or your own subclass that implements the
   * standard interface.
   * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
   * it might be more efficient to use a version of
   * <code>setAsciiStream</code> which takes a length parameter.
   *
   * @param parameterName the name of the parameter
   * @param x the Java input stream that contains the ASCII parameter value
   * @exception SQLException if a database access error occurs or
   * this method is called on a closed <code>CallableStatement</code>
   * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
     * @since 1.6
  */
  public void setAsciiStream(String parameterName, java.io.InputStream x)
          throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given input stream.
    * When a very large binary value is input to a <code>LONGVARBINARY</code>
    * parameter, it may be more practical to send it via a
    * <code>java.io.InputStream</code> object. The data will be read from the
    * stream as needed until end-of-file is reached.
    *
    * <P><B>Note:</B> This stream object can either be a standard
    * Java stream object or your own subclass that implements the
    * standard interface.
    * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
    * it might be more efficient to use a version of
    * <code>setBinaryStream</code> which takes a length parameter.
    *
    * @param parameterName the name of the parameter
    * @param x the java input stream which contains the binary parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    * @since 1.6
    */
   public void setBinaryStream(String parameterName, java.io.InputStream x)
   throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given <code>Reader</code>
    * object.
    * When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
    * parameter, it may be more practical to send it via a
    * <code>java.io.Reader</code> object. The data will be read from the stream
    * as needed until end-of-file is reached.  The JDBC driver will
    * do any necessary conversion from UNICODE to the database char format.
    *
    * <P><B>Note:</B> This stream object can either be a standard
    * Java stream object or your own subclass that implements the
    * standard interface.
    * <P><B>Note:</B> Consult your JDBC driver documentation to determine if
    * it might be more efficient to use a version of
    * <code>setCharacterStream</code> which takes a length parameter.
    *
    * @param parameterName the name of the parameter
    * @param reader the <code>java.io.Reader</code> object that contains the
    *        Unicode data
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @throws SQLFeatureNotSupportedException  if the JDBC driver does not support this method
    * @since 1.6
    */
   public void setCharacterStream(String parameterName,
                         java.io.Reader reader) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

   /**
    * Sets the designated parameter to the given
    * <code>java.math.BigDecimal</code> value.
    * The driver converts this to an SQL <code>NUMERIC</code> value when
    * it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getBigDecimal
    * @since 1.4
    */
   public void setBigDecimal(String parameterName, BigDecimal x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given Java <code>String</code> value.
    * The driver converts this
    * to an SQL <code>VARCHAR</code> or <code>LONGVARCHAR</code> value
    * (depending on the argument's
    * size relative to the driver's limits on <code>VARCHAR</code> values)
    * when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getString
    * @since 1.4
    */
   public void setString(String parameterName, String x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given Java array of bytes.
    * The driver converts this to an SQL <code>VARBINARY</code> or
    * <code>LONGVARBINARY</code> (depending on the argument's size relative
    * to the driver's limits on <code>VARBINARY</code> values) when it sends
    * it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getBytes
    * @since 1.4
    */
   public void setBytes(String parameterName, byte x[]) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given <code>java.sql.Timestamp</code> value.
    * The driver
    * converts this to an SQL <code>TIMESTAMP</code> value when it sends it to the
    * database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getTimestamp
    * @since 1.4
    */
   public void setTimestamp(String parameterName, java.sql.Timestamp x)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

    /**
    * Sets the designated parameter to SQL <code>NULL</code>.
    *
    * <P><B>Note:</B> You must specify the parameter's SQL type.
    *
    * @param parameterName the name of the parameter
    * @param sqlType the SQL type code defined in <code>java.sql.Types</code>
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setNull(String parameterName, int sqlType) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to SQL <code>NULL</code>.
    * This version of the method <code>setNull</code> should
    * be used for user-defined types and REF type parameters.  Examples
    * of user-defined types include: STRUCT, DISTINCT, JAVA_OBJECT, and
    * named array types.
    *
    * <P><B>Note:</B> To be portable, applications must give the
    * SQL type code and the fully-qualified SQL type name when specifying
    * a NULL user-defined or REF parameter.  In the case of a user-defined type
    * the name is the type name of the parameter itself.  For a REF
    * parameter, the name is the type name of the referenced type.  If
    * a JDBC driver does not need the type code or type name information,
    * it may ignore it.
    *
    * Although it is intended for user-defined and Ref parameters,
    * this method may be used to set a null parameter of any JDBC type.
    * If the parameter does not have a user-defined or REF type, the given
    * typeName is ignored.
    *
    *
    * @param parameterName the name of the parameter
    * @param sqlType a value from <code>java.sql.Types</code>
    * @param typeName the fully-qualified name of an SQL user-defined type;
    *        ignored if the parameter is not a user-defined type or
    *        SQL <code>REF</code> value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setNull (String parameterName, int sqlType, String typeName)
       throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given Java <code>boolean</code> value.
    * The driver converts this
    * to an SQL <code>BIT</code> or <code>BOOLEAN</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @see #getBoolean
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @since 1.4
    */
   public void setBoolean(String parameterName, boolean x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given Java <code>byte</code> value.
    * The driver converts this
    * to an SQL <code>TINYINT</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getByte
    * @since 1.4
    */
   public void setByte(String parameterName, byte x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }



 /**
    * Sets the designated parameter to the given Java <code>short</code> value.
    * The driver converts this
    * to an SQL <code>SMALLINT</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getShort
    * @since 1.4
    */
   public void setShort(String parameterName, short x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given Java <code>int</code> value.
    * The driver converts this
    * to an SQL <code>INTEGER</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getInt
    * @since 1.4
    */
   public void setInt(String parameterName, int x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given Java <code>long</code> value.
    * The driver converts this
    * to an SQL <code>BIGINT</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getLong
    * @since 1.4
    */
   public void setLong(String parameterName, long x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given Java <code>float</code> value.
    * The driver converts this
    * to an SQL <code>FLOAT</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getFloat
    * @since 1.4
    */
   public void setFloat(String parameterName, float x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }


 /**
    * Sets the designated parameter to the given Java <code>double</code> value.
    * The driver converts this
    * to an SQL <code>DOUBLE</code> value when it sends it to the database.
    *
    * @param parameterName the name of the parameter
    * @param x the parameter value
    * @exception SQLException if a database access error occurs or
    * this method is called on a closed <code>CallableStatement</code>
    * @exception SQLFeatureNotSupportedException if the JDBC driver does not support
    * this method
    * @see #getDouble
    * @since 1.4
    */
   public void setDouble(String parameterName, double x) throws SQLException{
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }

   /**
     * This method re populates the resBundle
     * during the deserialization process
     *
     */
    private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
        // Default state initialization happens here
        ois.defaultReadObject();
        // Initialization of transient Res Bundle happens here .
        try {
           resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
        } catch(IOException ioe) {
            throw new RuntimeException(ioe);
        }

    }

    //------------------------- JDBC 4.1 -----------------------------------
    public <T> T getObject(int columnIndex, Class<T> type) throws SQLException {
        throw new SQLFeatureNotSupportedException("Not supported yet.");
    }

    public <T> T getObject(String columnLabel, Class<T> type) throws SQLException {
        throw new SQLFeatureNotSupportedException("Not supported yet.");
    }

    static final long serialVersionUID =1884577171200622428L;
}