1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.kernel.servlet;
16  
17  import com.liferay.portal.kernel.deploy.hot.HotDeployEvent;
18  import com.liferay.portal.kernel.deploy.hot.HotDeployUtil;
19  import com.liferay.portal.kernel.log.Log;
20  import com.liferay.portal.kernel.log.LogFactoryUtil;
21  import com.liferay.portal.kernel.util.InfrastructureUtil;
22  import com.liferay.portal.kernel.util.PortalInitable;
23  import com.liferay.portal.kernel.util.PortalInitableUtil;
24  import com.liferay.portal.kernel.util.ServerDetector;
25  
26  import java.lang.reflect.Method;
27  
28  import javax.naming.Context;
29  import javax.naming.InitialContext;
30  import javax.naming.NamingException;
31  
32  import javax.servlet.ServletContext;
33  import javax.servlet.ServletContextEvent;
34  import javax.servlet.ServletContextListener;
35  
36  import javax.sql.DataSource;
37  
38  /**
39   * <a href="PortletContextListener.java.html"><b><i>View Source</i></b></a>
40   *
41   * @author Ivica Cardic
42   * @author Brian Wing Shun Chan
43   */
44  public class PortletContextListener
45      implements PortalInitable, ServletContextListener {
46  
47      public void contextDestroyed(ServletContextEvent event) {
48          ServletContext servletContext = event.getServletContext();
49  
50          Thread currentThread = Thread.currentThread();
51  
52          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
53  
54          HotDeployUtil.fireUndeployEvent(
55              new HotDeployEvent(servletContext, contextClassLoader));
56  
57          try {
58              if (!_bindLiferayPool) {
59                  return;
60              }
61  
62              _bindLiferayPool = false;
63  
64              if (_log.isDebugEnabled()) {
65                  _log.debug("Dynamically unbinding the Liferay data source");
66              }
67  
68              Context context = new InitialContext();
69  
70              try {
71                  context.lookup(_JNDI_JDBC_LIFERAY_POOL);
72              }
73              catch (NamingException ne) {
74                  context.unbind(_JNDI_JDBC_LIFERAY_POOL);
75              }
76  
77              try {
78                  context.lookup(_JNDI_JDBC);
79              }
80              catch (NamingException ne) {
81                  context.destroySubcontext(_JNDI_JDBC);
82              }
83          }
84          catch (Exception e) {
85              if (_log.isWarnEnabled()) {
86                  _log.warn(
87                      "Unable to dynamically unbind the Liferay data source: "
88                          + e.getMessage());
89              }
90          }
91      }
92  
93      public void contextInitialized(ServletContextEvent event) {
94          _servletContext = event.getServletContext();
95  
96          Thread currentThread = Thread.currentThread();
97  
98          _classLoader = currentThread.getContextClassLoader();
99  
100         PortalInitableUtil.init(this);
101     }
102 
103     public void portalInit() {
104         HotDeployUtil.fireDeployEvent(
105             new HotDeployEvent(_servletContext, _classLoader));
106 
107         try {
108             if (ServerDetector.isGlassfish()) {
109                 return;
110             }
111 
112             if (_log.isDebugEnabled()) {
113                 _log.debug("Dynamically binding the Liferay data source");
114             }
115 
116             DataSource dataSource = InfrastructureUtil.getDataSource();
117 
118             if (dataSource == null) {
119                 if (_log.isDebugEnabled()) {
120                     _log.debug(
121                         "Abort dynamically binding the Liferay data source " +
122                             "because it is not available");
123                 }
124 
125                 return;
126             }
127 
128             Context context = new InitialContext();
129 
130             try {
131                 context.lookup(_JNDI_JDBC);
132             }
133             catch (NamingException ne) {
134                 context.createSubcontext(_JNDI_JDBC);
135             }
136 
137             try {
138                 context.lookup(_JNDI_JDBC_LIFERAY_POOL);
139             }
140             catch (NamingException ne) {
141                 try {
142                     Method method = dataSource.getClass().getMethod(
143                         "getTargetDataSource");
144 
145                     dataSource = (DataSource)method.invoke(dataSource);
146                 }
147                 catch (NoSuchMethodException nsme) {
148                 }
149 
150                 context.bind(_JNDI_JDBC_LIFERAY_POOL, dataSource);
151             }
152 
153             _bindLiferayPool = true;
154         }
155         catch (Exception e) {
156             if (_log.isWarnEnabled()) {
157                 _log.warn(
158                     "Unable to dynamically bind the Liferay data source: "
159                         + e.getMessage());
160             }
161         }
162     }
163 
164     private static final String _JNDI_JDBC = "java_liferay:jdbc";
165 
166     private static final String _JNDI_JDBC_LIFERAY_POOL =
167         _JNDI_JDBC + "/LiferayPool";
168 
169     private static Log _log = LogFactoryUtil.getLog(
170         PortletContextListener.class);
171 
172     private ServletContext _servletContext;
173     private ClassLoader _classLoader;
174     private boolean _bindLiferayPool;
175 
176 }