ValueBaseHolder.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 1999, 2001, 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 org.omg.CORBA;
27
28import org.omg.CORBA.portable.Streamable;
29import org.omg.CORBA.portable.InputStream;
30import org.omg.CORBA.portable.OutputStream;
31
32/**
33 * The Holder for <tt>ValueBase</tt>.  For more information on
34 * Holder files, see <a href="doc-files/generatedfiles.html#holder">
35 * "Generated Files: Holder Files"</a>.<P>
36 * A Holder class for a <code>java.io.Serializable</code>
37 * that is used to store "out" and "inout" parameters in IDL methods.
38 * If an IDL method signature has an IDL <code>ValueBase</code> as an "out"
39 * or "inout" parameter, the programmer must pass an instance of
40 * <code>ValueBaseHolder</code> as the corresponding
41 * parameter in the method invocation; for "inout" parameters, the programmer
42 * must also fill the "in" value to be sent to the server.
43 * Before the method invocation returns, the ORB will fill in the
44 * value corresponding to the "out" value returned from the server.
45 * <P>
46 * If <code>myValueBaseHolder</code> is an instance of <code>ValueBaseHolder</code>,
47 * the value stored in its <code>value</code> field can be accessed with
48 * <code>myValueBaseHolder.value</code>.
49 *
50 */
51public final class ValueBaseHolder implements Streamable {
52
53    /**
54     * The <code>java.io.Serializable</code> value held by this
55     * <code>ValueBaseHolder</code> object.
56     */
57    public java.io.Serializable value;
58
59    /**
60     * Constructs a new <code>ValueBaseHolder</code> object with its
61     * <code>value</code> field initialized to <code>0</code>.
62     */
63    public ValueBaseHolder() {
64    }
65
66    /**
67     * Constructs a new <code>ValueBaseHolder</code> object with its
68     * <code>value</code> field initialized to the given
69     * <code>java.io.Serializable</code>.
70     * @param initial the <code>java.io.Serializable</code> with which to initialize
71     *                the <code>value</code> field of the newly-created
72     *                <code>ValueBaseHolder</code> object
73     */
74    public ValueBaseHolder(java.io.Serializable initial) {
75        value = initial;
76    }
77
78    /**
79     * Reads from <code>input</code> and initalizes the value in the Holder
80     * with the unmarshalled data.
81     *
82     * @param input the InputStream containing CDR formatted data from the wire
83     */
84    public void _read(InputStream input) {
85        value = ((org.omg.CORBA_2_3.portable.InputStream)input).read_value();
86    }
87
88    /**
89     * Marshals to <code>output</code> the value in the Holder.
90     *
91     * @param output the OutputStream which will contain the CDR formatted data
92     */
93    public void _write(OutputStream output) {
94        ((org.omg.CORBA_2_3.portable.OutputStream)output).write_value(value);
95    }
96
97    /**
98     * Returns the <code>TypeCode</code> object
99     * corresponding to the value held in the Holder.
100     *
101     * @return    the TypeCode of the value held in the holder
102     */
103    public org.omg.CORBA.TypeCode _type() {
104        return ORB.init().get_primitive_tc(TCKind.tk_value);
105    }
106
107}
108