Enhancer


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *
23   *   Free Software Foundation, Inc.
24   *   59 Temple Place, Suite 330
25   *   Boston, MA 02111-1307  USA
26   *
27   * @author Scott Ferguson
28   */
29  
30  package com.caucho.loader.enhancer;
31  
32  import com.caucho.bytecode.JavaClass;
33  import com.caucho.java.gen.GenClass;
34  import com.caucho.log.Log;
35  import com.caucho.util.L10N;
36  
37  import java.util.logging.Logger  ;
38  
39  /**
40   * Class loader which enhances classes.
41   */
42  abstract public class Enhancer {
43    private static final L10N L = new L10N(Enhancer.class);
44    private static final Logger   log = Log.open(Enhancer.class);
45  
46    private static final int ACC_PUBLIC = 0x1;
47    private static final int ACC_PRIVATE = 0x2;
48    private static final int ACC_PROTECTED = 0x4;
49    
50    private String   _baseSuffix = ""; // "__ResinBase"
51    
52    /**
53     * Enhances the class.
54     */
55    protected void preEnhance(JavaClass baseClass)
56      throws Exception  
57    {
58    }
59    
60    /**
61     * Enhances the class.
62     */
63    protected void enhance(GenClass genClass,
64               JavaClass baseClass,
65               String   extClassName)
66      throws Exception  
67    {
68    }
69    
70    /**
71     * Enhances the class.
72     */
73    protected void postEnhance(JavaClass baseClass)
74      throws Exception  
75    {
76    }
77  }
78
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