01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * 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.JClass;
33: import com.caucho.bytecode.JavaClass;
34: import com.caucho.java.gen.GenClass;
35:
36: /**
37: * Interface for a class enhancer.
38: */
39: public interface ClassEnhancer {
40: /**
41: * Returns true if the class will be enhanced.
42: */
43: public boolean shouldEnhance(String className);
44:
45: /**
46: * Fixups for the pre-enhancement class.
47: */
48: public void preEnhance(JavaClass baseClass) throws Exception;
49:
50: /**
51: * Enhances the class by adding to the GenClass.
52: */
53: public void enhance(GenClass genClass, JClass baseClass,
54: String extClassName) throws Exception;
55:
56: /**
57: * Any post compilation fixups.
58: */
59: public void postEnhance(JavaClass extClass) throws Exception;
60: }
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