001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.servlet;
016    
017    import com.liferay.portal.kernel.deploy.hot.HotDeployEvent;
018    import com.liferay.portal.kernel.deploy.hot.HotDeployUtil;
019    import com.liferay.portal.kernel.log.Log;
020    import com.liferay.portal.kernel.log.LogFactoryUtil;
021    import com.liferay.portal.kernel.util.BasePortalLifecycle;
022    import com.liferay.portal.kernel.util.InfrastructureUtil;
023    import com.liferay.portal.kernel.util.ServerDetector;
024    
025    import java.lang.reflect.Method;
026    
027    import javax.naming.Context;
028    import javax.naming.InitialContext;
029    import javax.naming.NamingException;
030    
031    import javax.servlet.ServletContext;
032    import javax.servlet.ServletContextEvent;
033    import javax.servlet.ServletContextListener;
034    
035    import javax.sql.DataSource;
036    
037    /**
038     * @author Ivica Cardic
039     * @author Brian Wing Shun Chan
040     */
041    public class PortletContextListener
042            extends BasePortalLifecycle implements ServletContextListener {
043    
044            public void contextDestroyed(ServletContextEvent servletContextEvent) {
045                    portalDestroy();
046            }
047    
048            public void contextInitialized(ServletContextEvent servletContextEvent) {
049                    _servletContext = servletContextEvent.getServletContext();
050    
051                    Thread currentThread = Thread.currentThread();
052    
053                    _portletClassLoader = currentThread.getContextClassLoader();
054    
055                    registerPortalLifecycle();
056            }
057    
058            protected void doPortalDestroy() {
059                    HotDeployUtil.fireUndeployEvent(
060                            new HotDeployEvent(_servletContext, _portletClassLoader));
061    
062                    try {
063                            if (!_bindLiferayPool) {
064                                    return;
065                            }
066    
067                            _bindLiferayPool = false;
068    
069                            if (_log.isDebugEnabled()) {
070                                    _log.debug("Dynamically unbinding the Liferay data source");
071                            }
072    
073                            Context context = new InitialContext();
074    
075                            try {
076                                    context.lookup(_JNDI_JDBC_LIFERAY_POOL);
077                            }
078                            catch (NamingException ne) {
079                                    context.unbind(_JNDI_JDBC_LIFERAY_POOL);
080                            }
081    
082                            try {
083                                    context.lookup(_JNDI_JDBC);
084                            }
085                            catch (NamingException ne) {
086                                    context.destroySubcontext(_JNDI_JDBC);
087                            }
088                    }
089                    catch (Exception e) {
090                            if (_log.isWarnEnabled()) {
091                                    _log.warn(
092                                            "Unable to dynamically unbind the Liferay data source: "
093                                                    + e.getMessage());
094                            }
095                    }
096            }
097    
098            protected void doPortalInit() {
099                    HotDeployUtil.fireDeployEvent(
100                            new HotDeployEvent(_servletContext, _portletClassLoader));
101    
102                    try {
103                            if (ServerDetector.isGlassfish()) {
104                                    return;
105                            }
106    
107                            if (_log.isDebugEnabled()) {
108                                    _log.debug("Dynamically binding the Liferay data source");
109                            }
110    
111                            DataSource dataSource = InfrastructureUtil.getDataSource();
112    
113                            if (dataSource == null) {
114                                    if (_log.isDebugEnabled()) {
115                                            _log.debug(
116                                                    "Abort dynamically binding the Liferay data source " +
117                                                            "because it is not available");
118                                    }
119    
120                                    return;
121                            }
122    
123                            Context context = new InitialContext();
124    
125                            try {
126                                    context.lookup(_JNDI_JDBC);
127                            }
128                            catch (NamingException ne) {
129                                    context.createSubcontext(_JNDI_JDBC);
130                            }
131    
132                            try {
133                                    context.lookup(_JNDI_JDBC_LIFERAY_POOL);
134                            }
135                            catch (NamingException ne) {
136                                    try {
137                                            Method method = dataSource.getClass().getMethod(
138                                                    "getTargetDataSource");
139    
140                                            dataSource = (DataSource)method.invoke(dataSource);
141                                    }
142                                    catch (NoSuchMethodException nsme) {
143                                    }
144    
145                                    context.bind(_JNDI_JDBC_LIFERAY_POOL, dataSource);
146                            }
147    
148                            _bindLiferayPool = true;
149                    }
150                    catch (Exception e) {
151                            if (_log.isWarnEnabled()) {
152                                    _log.warn(
153                                            "Unable to dynamically bind the Liferay data source: "
154                                                    + e.getMessage());
155                            }
156                    }
157            }
158    
159            private static final String _JNDI_JDBC = "java_liferay:jdbc";
160    
161            private static final String _JNDI_JDBC_LIFERAY_POOL =
162                    _JNDI_JDBC + "/LiferayPool";
163    
164            private static Log _log = LogFactoryUtil.getLog(
165                    PortletContextListener.class);
166    
167            private boolean _bindLiferayPool;
168            private ClassLoader _portletClassLoader;
169            private ServletContext _servletContext;
170    
171    }