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Java > Open Source Codes > org > jboss > test > javassist > test > support > ThingMethodHandler


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22
23 package org.jboss.test.javassist.test.support;
24
25 import java.lang.reflect.Method JavaDoc;
26 import java.lang.reflect.InvocationTargetException JavaDoc;
27
28 import javassist.util.proxy.MethodHandler;
29 import javassist.util.proxy.RuntimeSupport;
30
31 /**
32  * @author Scott.Stark@jboss.org
33  * @version $Revision: 45128 $
34  */
35 public class ThingMethodHandler implements MethodHandler
36 {
37    private IThing theThing;
38    public ThingMethodHandler(IThing theThing)
39    {
40       this.theThing = theThing;
41    }
42
43    public Object JavaDoc invoke(Object JavaDoc self, Method JavaDoc thisMethod, Method JavaDoc proceed, Object JavaDoc[] args)
44       throws Exception JavaDoc
45    {
46       Object JavaDoc result = null;
47       try
48       {
49          if( theThing.getClass() == thisMethod.getDeclaringClass() )
50             result = thisMethod.invoke(theThing, args);
51          else
52          {
53             String JavaDoc desc = RuntimeSupport.makeDescriptor(thisMethod);
54             Method JavaDoc m = RuntimeSupport.findMethod(theThing, thisMethod.getName(), desc);
55             result = m.invoke(theThing, args);
56          }
57       }
58       catch (InvocationTargetException JavaDoc e)
59       {
60          Throwable JavaDoc t = e.getTargetException();
61          if( t instanceof Exception JavaDoc )
62             throw (Exception JavaDoc) t;
63          else if( t instanceof Error JavaDoc )
64             throw (Error JavaDoc) t;
65          // Not good, but simply cannot throw a Throwable
66 throw e;
67       }
68
69       return result;
70    }
71 }
72
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