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 invoke(Object proxy, Method method, Object[] args)
36          throws Throwable {
37  
38          Thread currentThread = Thread.currentThread();
39  
40          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
41  
42          try {
43              if ((_classLoader != null) &&
44                  (contextClassLoader != _classLoader)) {
45  
46                  currentThread.setContextClassLoader(_classLoader);
47              }
48  
49              return method.invoke(_bean, args);
50          }
51          catch (InvocationTargetException ite) {
52              throw ite.getTargetException();
53          }
54          finally {
55              if ((_classLoader != null) &&
56                  (contextClassLoader != _classLoader)) {
57  
58                  currentThread.setContextClassLoader(contextClassLoader);
59              }
60          }
61      }
62  
63      private Object _bean;
64      private ClassLoader _classLoader;
65  
66  }