PrefixParserAction.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.corba.se.impl.orb ;
27
28import org.omg.CORBA.INITIALIZE ;
29
30import java.util.Properties ;
31import java.util.List ;
32import java.util.LinkedList ;
33import java.util.Iterator ;
34
35import java.lang.reflect.Array ;
36
37import com.sun.corba.se.spi.orb.Operation ;
38import com.sun.corba.se.spi.orb.StringPair ;
39import com.sun.corba.se.spi.logging.CORBALogDomains ;
40
41import com.sun.corba.se.impl.orbutil.ObjectUtility ;
42import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
43
44public class PrefixParserAction extends ParserActionBase {
45    private Class componentType ;
46    private ORBUtilSystemException wrapper ;
47
48    public PrefixParserAction( String propertyName,
49        Operation operation, String fieldName, Class componentType )
50    {
51        super( propertyName, true, operation, fieldName ) ;
52        this.componentType = componentType ;
53        this.wrapper = ORBUtilSystemException.get(
54            CORBALogDomains.ORB_LIFECYCLE ) ;
55    }
56
57    /** For each String s that matches the prefix given by getPropertyName(),
58     * apply getOperation() to { suffix( s ), value }
59     * and add the result to an Object[]
60     * which forms the result of apply.  Returns null if there are no
61     * matches.
62     */
63    public Object apply( Properties props )
64    {
65        String prefix = getPropertyName() ;
66        int prefixLength = prefix.length() ;
67        if (prefix.charAt( prefixLength - 1 ) != '.') {
68            prefix += '.' ;
69            prefixLength++ ;
70        }
71
72        List matches = new LinkedList() ;
73
74        // Find all keys in props that start with propertyName
75        Iterator iter = props.keySet().iterator() ;
76        while (iter.hasNext()) {
77            String key = (String)(iter.next()) ;
78            if (key.startsWith( prefix )) {
79                String suffix = key.substring( prefixLength ) ;
80                String value = props.getProperty( key ) ;
81                StringPair data = new StringPair( suffix, value ) ;
82                Object result = getOperation().operate( data ) ;
83                matches.add( result ) ;
84            }
85        }
86
87        int size = matches.size() ;
88        if (size > 0) {
89            // Convert the list into an array of the proper type.
90            // An Object[] as a result does NOT work.  Also report
91            // any errors carefully, as errors here or in parsers that
92            // use this Operation often show up at ORB.init().
93            Object result = null ;
94            try {
95                result = Array.newInstance( componentType, size ) ;
96            } catch (Throwable thr) {
97                throw wrapper.couldNotCreateArray( thr,
98                    getPropertyName(), componentType,
99                    new Integer( size ) ) ;
100            }
101
102            Iterator iter2 = matches.iterator() ;
103            int ctr = 0 ;
104            while (iter2.hasNext()) {
105                Object obj = iter2.next() ;
106
107                try {
108                    Array.set( result, ctr, obj ) ;
109                } catch (Throwable thr) {
110                    throw wrapper.couldNotSetArray( thr,
111                        getPropertyName(), new Integer(ctr),
112                        componentType, new Integer(size),
113                        obj.toString() ) ;
114                }
115                ctr++ ;
116            }
117
118            return result ;
119        } else
120            return null ;
121    }
122}
123