1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.spring.aop;
21  
22  import org.aopalliance.intercept.MethodInterceptor;
23  import org.aopalliance.intercept.MethodInvocation;
24  
25  /**
26   * <a href="BeanInterceptor.java.html"><b><i>View Source</i></b></a>
27   *
28   * @author Brian Wing Shun Chan
29   *
30   */
31  public class BeanInterceptor implements MethodInterceptor {
32  
33      public Object invoke(MethodInvocation invocation) throws Throwable {
34          Thread currentThread = Thread.currentThread();
35  
36          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
37  
38          try {
39              if ((_classLoader != null) &&
40                  (contextClassLoader != _classLoader)) {
41  
42                  currentThread.setContextClassLoader(_classLoader);
43              }
44  
45              return invocation.proceed();
46          }
47          catch (Throwable t) {
48              if (_exceptionSafe) {
49                  return null;
50              }
51              else {
52                  throw t;
53              }
54          }
55          finally {
56              if ((_classLoader != null) &&
57                  (contextClassLoader != _classLoader)) {
58  
59                  currentThread.setContextClassLoader(contextClassLoader);
60              }
61          }
62      }
63  
64      public void setClassLoader(ClassLoader classLoader) {
65          _classLoader = classLoader;
66      }
67  
68      public void setExceptionSafe(boolean exceptionSafe) {
69          _exceptionSafe = exceptionSafe;
70      }
71  
72      private ClassLoader _classLoader;
73      private boolean _exceptionSafe;
74  
75  }