Source code: gnu/java/beans/decoder/DummyContext.java
1 /* gnu.java.beans.decoder.DummyContext
2 Copyright (C) 2004 Free Software Foundation, Inc.
3
4 This file is part of GNU Classpath.
5
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
37
38 package gnu.java.beans.decoder;
39
40 /** The DummyContext is used as the Context implementation for the DummyHandler. It
41 * just prevents having a null-reference.
42 *
43 * <p>When the implementation is correct none of this class' methods
44 * (except <code>notifyStatement()</code>) is called.</p>
45 *
46 * @author Robert Schuster
47 */
48 public class DummyContext extends AbstractContext
49 {
50 /* (non-Javadoc)
51 * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object)
52 */
53 public void addParameterObject(Object o) throws AssemblyException
54 {
55 fail();
56 }
57
58 /* (non-Javadoc)
59 * @see gnu.java.beans.decoder.Context#reportStatement()
60 */
61 public void notifyStatement(Context outerContext) throws AssemblyException
62 {
63 // intentionally ignored
64 }
65
66 /* (non-Javadoc)
67 * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context)
68 */
69 public Object endContext(Context outerContext) throws AssemblyException
70 {
71 fail();
72 return null;
73 }
74
75 /* (non-Javadoc)
76 * @see gnu.java.beans.decoder.Context#subContextFailed()
77 */
78 public boolean subContextFailed()
79 {
80 fail();
81 return false;
82 }
83
84 /* (non-Javadoc)
85 * @see gnu.java.beans.decoder.Context#set(int, java.lang.Object)
86 */
87 public void set(int index, Object o) throws AssemblyException
88 {
89 fail();
90 }
91
92 /* (non-Javadoc)
93 * @see gnu.java.beans.decoder.Context#get(int)
94 */
95 public Object get(int index) throws AssemblyException
96 {
97 fail();
98 return null;
99 }
100
101 /* (non-Javadoc)
102 * @see gnu.java.beans.decoder.Context#getResult()
103 */
104 public Object getResult()
105 {
106 fail();
107 return null;
108 }
109
110 private void fail()
111 {
112 throw new InternalError("Invoking the DummyContext is not expected"
113 + " - Please file a bug report at"
114 + " http://www/gnu.org/software/classpath/.");
115 }
116 }