1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights 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  public class PortletContextListener
53      implements PortalInitable, ServletContextListener {
54  
55      public void contextDestroyed(ServletContextEvent event) {
56          ServletContext servletContext = event.getServletContext();
57  
58          Thread currentThread = Thread.currentThread();
59  
60          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
61  
62          HotDeployUtil.fireUndeployEvent(
63              new HotDeployEvent(servletContext, contextClassLoader));
64  
65          try {
66              if (!_bindLiferayPool) {
67                  return;
68              }
69  
70              _bindLiferayPool = false;
71  
72              if (_log.isDebugEnabled()) {
73                  _log.debug("Dynamically unbinding the Liferay data source");
74              }
75  
76              Context context = new InitialContext();
77  
78              try {
79                  context.lookup(_JNDI_JDBC_LIFERAY_POOL);
80              }
81              catch (NamingException ne) {
82                  context.unbind(_JNDI_JDBC_LIFERAY_POOL);
83              }
84  
85              try {
86                  context.lookup(_JNDI_JDBC);
87              }
88              catch (NamingException ne) {
89                  context.destroySubcontext(_JNDI_JDBC);
90              }
91          }
92          catch (Exception e) {
93              if (_log.isWarnEnabled()) {
94                  _log.warn(
95                      "Unable to dynamically unbind the Liferay data source: "
96                          + e.getMessage());
97              }
98          }
99      }
100 
101     public void contextInitialized(ServletContextEvent event) {
102         _servletContext = event.getServletContext();
103 
104         Thread currentThread = Thread.currentThread();
105 
106         _classLoader = currentThread.getContextClassLoader();
107 
108         PortalInitableUtil.init(this);
109     }
110 
111     public void portalInit() {
112         HotDeployUtil.fireDeployEvent(
113             new HotDeployEvent(_servletContext, _classLoader));
114 
115         try {
116             if (ServerDetector.isGlassfish2()) {
117                 return;
118             }
119 
120             if (_log.isDebugEnabled()) {
121                 _log.debug("Dynamically binding the Liferay data source");
122             }
123 
124             DataSource dataSource = InfrastructureUtil.getDataSource();
125 
126             if (dataSource == null) {
127                 if (_log.isDebugEnabled()) {
128                     _log.debug(
129                         "Abort dynamically binding the Liferay data source " +
130                             "because it is not available");
131                 }
132 
133                 return;
134             }
135 
136             Context context = new InitialContext();
137 
138             try {
139                 context.lookup(_JNDI_JDBC);
140             }
141             catch (NamingException ne) {
142                 context.createSubcontext(_JNDI_JDBC);
143             }
144 
145             try {
146                 context.lookup(_JNDI_JDBC_LIFERAY_POOL);
147             }
148             catch (NamingException ne) {
149                 try {
150                     Method method = dataSource.getClass().getMethod(
151                         "getTargetDataSource");
152 
153                     dataSource = (DataSource)method.invoke(dataSource);
154                 }
155                 catch (NoSuchMethodException nsme) {
156                 }
157 
158                 context.bind(_JNDI_JDBC_LIFERAY_POOL, dataSource);
159             }
160 
161             _bindLiferayPool = true;
162         }
163         catch (Exception e) {
164             if (_log.isWarnEnabled()) {
165                 _log.warn(
166                     "Unable to dynamically bind the Liferay data source: "
167                         + e.getMessage());
168             }
169         }
170     }
171 
172     private static final String _JNDI_JDBC = "java_liferay:jdbc";
173 
174     private static final String _JNDI_JDBC_LIFERAY_POOL =
175         _JNDI_JDBC + "/LiferayPool";
176 
177     private static Log _log =
178         LogFactoryUtil.getLog(PortletContextListener.class);
179 
180     private ServletContext _servletContext;
181     private ClassLoader _classLoader;
182     private boolean _bindLiferayPool;
183 
184 }