1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.spring.aop;
24  
25  import org.aopalliance.intercept.MethodInterceptor;
26  import org.aopalliance.intercept.MethodInvocation;
27  
28  /**
29   * <a href="BeanInterceptor.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   *
33   */
34  public class BeanInterceptor implements MethodInterceptor {
35  
36      public Object invoke(MethodInvocation invocation) throws Throwable {
37          ClassLoader contextClassLoader =
38              Thread.currentThread().getContextClassLoader();
39  
40          try {
41              if ((_classLoader != null) &&
42                  (contextClassLoader != _classLoader)) {
43  
44                  Thread.currentThread().setContextClassLoader(_classLoader);
45              }
46  
47              return invocation.proceed();
48          }
49          catch (Throwable t) {
50              if (_exceptionSafe) {
51                  return null;
52              }
53              else {
54                  throw t;
55              }
56          }
57          finally {
58              if ((_classLoader != null) &&
59                  (contextClassLoader != _classLoader)) {
60  
61                  Thread.currentThread().setContextClassLoader(
62                      contextClassLoader);
63              }
64          }
65      }
66  
67      public void setClassLoader(ClassLoader classLoader) {
68          _classLoader = classLoader;
69      }
70  
71      public void setExceptionSafe(boolean exceptionSafe) {
72          _exceptionSafe = exceptionSafe;
73      }
74  
75      private ClassLoader _classLoader;
76      private boolean _exceptionSafe;
77  
78  }