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.util.PortalClassLoaderUtil;
28  import com.liferay.portal.kernel.util.PortalInitable;
29  import com.liferay.portal.kernel.util.PortalInitableUtil;
30  
31  import java.io.IOException;
32  
33  import javax.servlet.ServletConfig;
34  import javax.servlet.ServletException;
35  import javax.servlet.http.HttpServlet;
36  import javax.servlet.http.HttpServletRequest;
37  import javax.servlet.http.HttpServletResponse;
38  
39  /**
40   * <a href="PortalClassLoaderServlet.java.html"><b><i>View Source</i></b></a>
41   *
42   * @author Brian Wing Shun Chan
43   *
44   */
45  public class PortalClassLoaderServlet
46      extends HttpServlet implements PortalInitable {
47  
48      public void destroy() {
49          ClassLoader contextClassLoader =
50              Thread.currentThread().getContextClassLoader();
51  
52          try {
53              Thread.currentThread().setContextClassLoader(
54                  PortalClassLoaderUtil.getClassLoader());
55  
56              _servlet.destroy();
57          }
58          finally {
59              Thread.currentThread().setContextClassLoader(contextClassLoader);
60          }
61      }
62  
63      public void init(ServletConfig filterConfig) {
64          _filterConfig = filterConfig;
65  
66          PortalInitableUtil.init(this);
67      }
68  
69      public void portalInit() {
70          ClassLoader contextClassLoader =
71              Thread.currentThread().getContextClassLoader();
72  
73          ClassLoader portalClassLoader = PortalClassLoaderUtil.getClassLoader();
74  
75          try {
76              Thread.currentThread().setContextClassLoader(portalClassLoader);
77  
78              String servletClass = _filterConfig.getInitParameter(
79                  "servlet-class");
80  
81              _servlet = (HttpServlet)portalClassLoader.loadClass(
82                  servletClass).newInstance();
83  
84              _servlet.init(_filterConfig);
85          }
86          catch (Exception e) {
87              _log.error(e, e);
88          }
89          finally {
90              Thread.currentThread().setContextClassLoader(contextClassLoader);
91          }
92      }
93  
94      public void service(
95              HttpServletRequest request, HttpServletResponse response)
96          throws IOException, ServletException {
97  
98          ClassLoader contextClassLoader =
99              Thread.currentThread().getContextClassLoader();
100 
101         try {
102             Thread.currentThread().setContextClassLoader(
103                 PortalClassLoaderUtil.getClassLoader());
104 
105             _servlet.service(request, response);
106         }
107         finally {
108             Thread.currentThread().setContextClassLoader(contextClassLoader);
109         }
110     }
111 
112     private static Log _log =
113         LogFactoryUtil.getLog(PortalClassLoaderServlet.class);
114 
115     private HttpServlet _servlet;
116     private ServletConfig _filterConfig;
117 
118 }