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.kernel.servlet;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.portlet.PortletClassLoaderUtil;
28  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
29  import com.liferay.portal.kernel.util.PortalInitable;
30  import com.liferay.portal.kernel.util.PortalInitableUtil;
31  
32  import javax.servlet.ServletContextEvent;
33  import javax.servlet.ServletContextListener;
34  
35  /**
36   * <a href="PortalClassLoaderServletContextListener.java.html"><b><i>View Source
37   * </i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public abstract class PortalClassLoaderServletContextListener
43      implements PortalInitable, ServletContextListener {
44  
45      public PortalClassLoaderServletContextListener() {
46      }
47  
48      public void contextDestroyed(ServletContextEvent event) {
49          ClassLoader contextClassLoader =
50              Thread.currentThread().getContextClassLoader();
51  
52          try {
53              Thread.currentThread().setContextClassLoader(
54                  PortalClassLoaderUtil.getClassLoader());
55  
56              _servletContextListener.contextDestroyed(event);
57          }
58          finally {
59              Thread.currentThread().setContextClassLoader(contextClassLoader);
60          }
61      }
62  
63      public void contextInitialized(ServletContextEvent event) {
64          _event = event;
65  
66          PortalInitableUtil.init(this);
67      }
68  
69      public void portalInit() {
70          ClassLoader contextClassLoader =
71              Thread.currentThread().getContextClassLoader();
72  
73          PortletClassLoaderUtil.setClassLoader(contextClassLoader);
74  
75          try {
76              Thread.currentThread().setContextClassLoader(
77                  PortalClassLoaderUtil.getClassLoader());
78  
79              _servletContextListener = getInstance();
80  
81              _servletContextListener.contextInitialized(_event);
82          }
83          catch (Exception e) {
84              _log.error(e, e);
85          }
86          finally {
87              Thread.currentThread().setContextClassLoader(
88                  contextClassLoader);
89          }
90      }
91  
92      protected abstract ServletContextListener getInstance() throws Exception;
93  
94      private static Log _log =
95          LogFactoryUtil.getLog(PortalClassLoaderServletContextListener.class);
96  
97      private ServletContextEvent _event;
98      private ServletContextListener _servletContextListener;
99  
100 }