1   /**
2    * Copyright (c) 2000-2009 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.deploy.hot.HotDeployEvent;
26  import com.liferay.portal.kernel.deploy.hot.HotDeployUtil;
27  import com.liferay.portal.kernel.log.Log;
28  import com.liferay.portal.kernel.log.LogFactoryUtil;
29  import com.liferay.portal.kernel.util.InfrastructureUtil;
30  import com.liferay.portal.kernel.util.PortalInitable;
31  import com.liferay.portal.kernel.util.PortalInitableUtil;
32  import com.liferay.portal.kernel.util.ServerDetector;
33  
34  import java.lang.reflect.Method;
35  
36  import javax.naming.Context;
37  import javax.naming.InitialContext;
38  import javax.naming.NamingException;
39  
40  import javax.servlet.ServletContext;
41  import javax.servlet.ServletContextEvent;
42  import javax.servlet.ServletContextListener;
43  
44  import javax.sql.DataSource;
45  
46  /**
47   * <a href="PortletContextListener.java.html"><b><i>View Source</i></b></a>
48   *
49   * @author Ivica Cardic
50   * @author Brian Wing Shun Chan
51   *
52   */
53  public class PortletContextListener
54      implements PortalInitable, ServletContextListener {
55  
56      public void contextDestroyed(ServletContextEvent event) {
57          ServletContext servletContext = event.getServletContext();
58  
59          Thread currentThread = Thread.currentThread();
60  
61          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
62  
63          HotDeployUtil.fireUndeployEvent(
64              new HotDeployEvent(servletContext, contextClassLoader));
65  
66          try {
67              if (!_bindLiferayPool) {
68                  return;
69              }
70  
71              _bindLiferayPool = false;
72  
73              if (_log.isDebugEnabled()) {
74                  _log.debug("Dynamically unbinding the Liferay data source");
75              }
76  
77              Context context = new InitialContext();
78  
79              try {
80                  context.lookup(_JNDI_JDBC_LIFERAY_POOL);
81              }
82              catch (NamingException ne) {
83                  context.unbind(_JNDI_JDBC_LIFERAY_POOL);
84              }
85  
86              try {
87                  context.lookup(_JNDI_JDBC);
88              }
89              catch (NamingException ne) {
90                  context.destroySubcontext(_JNDI_JDBC);
91              }
92          }
93          catch (Exception e) {
94              if (_log.isWarnEnabled()) {
95                  _log.warn(
96                      "Unable to dynamically unbind the Liferay data source: "
97                          + e.getMessage());
98              }
99          }
100     }
101 
102     public void contextInitialized(ServletContextEvent event) {
103         _servletContext = event.getServletContext();
104 
105         Thread currentThread = Thread.currentThread();
106 
107         _classLoader = currentThread.getContextClassLoader();
108 
109         PortalInitableUtil.init(this);
110     }
111 
112     public void portalInit() {
113         HotDeployUtil.fireDeployEvent(
114             new HotDeployEvent(_servletContext, _classLoader));
115 
116         try {
117             if (ServerDetector.isGlassfish2()) {
118                 return;
119             }
120 
121             if (_log.isDebugEnabled()) {
122                 _log.debug("Dynamically binding the Liferay data source");
123             }
124 
125             DataSource dataSource = InfrastructureUtil.getDataSource();
126 
127             if (dataSource == null) {
128                 if (_log.isDebugEnabled()) {
129                     _log.debug(
130                         "Abort dynamically binding the Liferay data source " +
131                             "because it is not available");
132                 }
133 
134                 return;
135             }
136 
137             Context context = new InitialContext();
138 
139             try {
140                 context.lookup(_JNDI_JDBC);
141             }
142             catch (NamingException ne) {
143                 context.createSubcontext(_JNDI_JDBC);
144             }
145 
146             try {
147                 context.lookup(_JNDI_JDBC_LIFERAY_POOL);
148             }
149             catch (NamingException ne) {
150                 try {
151                     Method method = dataSource.getClass().getMethod(
152                         "getTargetDataSource");
153 
154                     dataSource = (DataSource)method.invoke(dataSource);
155                 }
156                 catch (NoSuchMethodException nsme) {
157                 }
158 
159                 context.bind(_JNDI_JDBC_LIFERAY_POOL, dataSource);
160             }
161 
162             _bindLiferayPool = true;
163         }
164         catch (Exception e) {
165             if (_log.isWarnEnabled()) {
166                 _log.warn(
167                     "Unable to dynamically bind the Liferay data source: "
168                         + e.getMessage());
169             }
170         }
171     }
172 
173     private static final String _JNDI_JDBC = "java_liferay:jdbc";
174 
175     private static final String _JNDI_JDBC_LIFERAY_POOL =
176         _JNDI_JDBC + "/LiferayPool";
177 
178     private static Log _log =
179         LogFactoryUtil.getLog(PortletContextListener.class);
180 
181     private ServletContext _servletContext;
182     private ClassLoader _classLoader;
183     private boolean _bindLiferayPool;
184 
185 }