1   /**
2    * Copyright (c) 2000-2007 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 portalInit() {
49          ClassLoader contextClassLoader =
50              Thread.currentThread().getContextClassLoader();
51  
52          ClassLoader portalClassLoader = PortalClassLoaderUtil.getClassLoader();
53  
54          try {
55              Thread.currentThread().setContextClassLoader(portalClassLoader);
56  
57              String servletClass = _config.getInitParameter("servlet-class");
58  
59              _servlet = (HttpServlet)portalClassLoader.loadClass(
60                  servletClass).newInstance();
61  
62              _servlet.init(_config);
63          }
64          catch (Exception e) {
65              _log.error(e, e);
66          }
67          finally {
68              Thread.currentThread().setContextClassLoader(contextClassLoader);
69          }
70      }
71  
72      public void init(ServletConfig config) throws ServletException {
73          _config = config;
74  
75          PortalInitableUtil.init(this);
76      }
77  
78      public void service(HttpServletRequest req, HttpServletResponse res)
79          throws IOException, ServletException {
80  
81          ClassLoader contextClassLoader =
82              Thread.currentThread().getContextClassLoader();
83  
84          try {
85              Thread.currentThread().setContextClassLoader(
86                  PortalClassLoaderUtil.getClassLoader());
87  
88              _servlet.service(req, res);
89          }
90          finally {
91              Thread.currentThread().setContextClassLoader(contextClassLoader);
92          }
93      }
94  
95      public void destroy() {
96          ClassLoader contextClassLoader =
97              Thread.currentThread().getContextClassLoader();
98  
99          try {
100             Thread.currentThread().setContextClassLoader(
101                 PortalClassLoaderUtil.getClassLoader());
102 
103             _servlet.destroy();
104         }
105         finally {
106             Thread.currentThread().setContextClassLoader(contextClassLoader);
107         }
108     }
109 
110     private static Log _log =
111         LogFactoryUtil.getLog(PortalClassLoaderServlet.class);
112 
113     private HttpServlet _servlet;
114     private ServletConfig _config;
115 
116 }