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Java > Open Source Codes > javassist > reflect > Sample


1 /*
2  * Javassist, a Java-bytecode translator toolkit.
3  * Copyright (C) 1999-2005 Shigeru Chiba. All Rights Reserved.
4  *
5  * The contents of this file are subject to the Mozilla Public License Version
6  * 1.1 (the "License"); you may not use this file except in compliance with
7  * the License. Alternatively, the contents of this file may be used under
8  * the terms of the GNU Lesser General Public License Version 2.1 or later.
9  *
10  * Software distributed under the License is distributed on an "AS IS" basis,
11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12  * for the specific language governing rights and limitations under the
13  * License.
14  */
15
16 package javassist.reflect;
17
18 /**
19  * A template used for defining a reflective class.
20  */
21 public class Sample {
22     private Metaobject _metaobject;
23     private static ClassMetaobject _classobject;
24
25     public Object JavaDoc trap(Object JavaDoc[] args, int identifier) throws Throwable JavaDoc {
26         Metaobject mobj;
27         mobj = _metaobject;
28         if (mobj == null)
29             return ClassMetaobject.invoke(this, identifier, args);
30         else
31             return mobj.trapMethodcall(identifier, args);
32     }
33
34     public static Object JavaDoc trapStatic(Object JavaDoc[] args, int identifier)
35         throws Throwable JavaDoc
36     {
37         return _classobject.trapMethodcall(identifier, args);
38     }
39
40     public static Object JavaDoc trapRead(Object JavaDoc[] args, String JavaDoc name) {
41         if (args[0] == null)
42             return _classobject.trapFieldRead(name);
43         else
44             return ((Metalevel)args[0])._getMetaobject().trapFieldRead(name);
45     }
46
47     public static Object JavaDoc trapWrite(Object JavaDoc[] args, String JavaDoc name) {
48         Metalevel base = (Metalevel)args[0];
49         if (base == null)
50             _classobject.trapFieldWrite(name, args[1]);
51         else
52             base._getMetaobject().trapFieldWrite(name, args[1]);
53
54         return null;
55     }
56 }
57
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