MethodEntryHook


1   /*
2    * Copyright(C) 2001 Mika Riekkinen, Joni Suominen
3    *
4    * This library is free software; you can redistribute it and/or
5    * modify it under the terms of the GNU Lesser General Public
6    * License as published by the Free Software Foundation; either
7    * version 2.1 of the License, or(at your option) any later version.
8    *
9    * This library is distributed in the hope that it will be useful,
10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   * Lesser General Public License for more details.
13   *
14   * You should have received a copy of the GNU Lesser General Public
15   * License along with this library; if not, write to the Free Software
16   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17   */
18  
19  package alt.jiapi.event;
20  
21  import java.lang.reflect.Method  ;
22  import alt.jiapi.instrumentor.Hook;
23  
24  /**
25   * Class used for internal purposes
26   *
27   * @author Mika Riekkinen
28   * @author Joni Suominen
29   * @version $Revision: 1.6 $ $Date: 2002/03/12 16:14:54 $
30   */
31  class MethodEntryHook implements Hook {
32      private Method   hookMethod;
33      private Object   instance;
34  
35      public MethodEntryHook(MethodEventProducer mep) {
36          this.instance = mep;
37          Class   [] params = new Class   [] {Object  .class, String  .class};
38          try {
39              this.hookMethod =
40                  MethodEventProducer.class.getMethod("methodEntered", params);
41          }
42          catch (Exception   e) {
43              // not possible, but just in case
44              e.printStackTrace();
45              throw new RuntimeException  (e.toString());
46          }
47      }
48  
49      public Method   getHookMethod() {
50          return hookMethod;
51      }
52  
53  
54      public Object   getInstance() {
55          return instance;
56      }
57  }
58  
59  
60  
61
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