| ContextClassLoaderBeanHandler.java |
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 }