1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.kernel.bean;
16  
17  import java.lang.Object;
18  import java.lang.reflect.InvocationHandler;
19  import java.lang.reflect.InvocationTargetException;
20  import java.lang.reflect.Method;
21  
22  /**
23   * <a href="ContextClassLoaderBeanHandler.java.html"><b><i>View Source</i></b>
24   * </a>
25   *
26   * @author Brian Wing Shun Chan
27   */
28  public class ContextClassLoaderBeanHandler implements InvocationHandler {
29  
30      public ContextClassLoaderBeanHandler(Object bean, ClassLoader classLoader) {
31          _bean = bean;
32          _classLoader = classLoader;
33      }
34  
35      public Object getBean() {
36          return _bean;
37      }
38  
39      public ClassLoader getClassLoader() {
40          return _classLoader;
41      }
42  
43      public Object invoke(Object proxy, Method method, Object[] args)
44          throws Throwable {
45  
46          Thread currentThread = Thread.currentThread();
47  
48          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
49  
50          try {
51              if ((_classLoader != null) &&
52                  (contextClassLoader != _classLoader)) {
53  
54                  currentThread.setContextClassLoader(_classLoader);
55              }
56  
57              return method.invoke(_bean, args);
58          }
59          catch (InvocationTargetException ite) {
60              throw ite.getTargetException();
61          }
62          finally {
63              if ((_classLoader != null) &&
64                  (contextClassLoader != _classLoader)) {
65  
66                  currentThread.setContextClassLoader(contextClassLoader);
67              }
68          }
69      }
70  
71      private Object _bean;
72      private ClassLoader _classLoader;
73  
74  }