01 /*
02 * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.lang.model.element;
27
28 /**
29 * Indicates that an unknown kind of annotation value was encountered.
30 * This can occur if the language evolves and new kinds of annotation
31 * values can be stored in an annotation. May be thrown by an
32 * {@linkplain AnnotationValueVisitor annotation value visitor} to
33 * indicate that the visitor was created for a prior version of the
34 * language.
35 *
36 * @author Joseph D. Darcy
37 * @author Scott Seligman
38 * @author Peter von der Ahé
39 * @version 1.10 07/05/05
40 * @see AnnotationValueVisitor#visitUnknown
41 * @since 1.6
42 */
43 public class UnknownAnnotationValueException extends RuntimeException {
44
45 private static final long serialVersionUID = 269L;
46
47 private transient AnnotationValue av;
48 private transient Object parameter;
49
50 /**
51 * Creates a new {@code UnknownAnnotationValueException}. The
52 * {@code p} parameter may be used to pass in an additional
53 * argument with information about the context in which the
54 * unknown annotation value was encountered; for example, the
55 * visit methods of {@link AnnotationValueVisitor} may pass in
56 * their additional parameter.
57 *
58 * @param av the unknown annotation value, may be {@code null}
59 * @param p an additional parameter, may be {@code null}
60 */
61 public UnknownAnnotationValueException(AnnotationValue av, Object p) {
62 super ("Unknown annotation value: " + av);
63 this .av = av;
64 this .parameter = p;
65 }
66
67 /**
68 * Returns the unknown annotation value.
69 * The value may be unavailable if this exception has been
70 * serialized and then read back in.
71 *
72 * @return the unknown element, or {@code null} if unavailable
73 */
74 public AnnotationValue getUnknownAnnotationValue() {
75 return av;
76 }
77
78 /**
79 * Returns the additional argument.
80 *
81 * @return the additional argument
82 */
83 public Object getArgument() {
84 return parameter;
85 }
86 }
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