001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.portlet.PortletBag;
020    import com.liferay.portal.kernel.portlet.PortletBagPool;
021    import com.liferay.portal.kernel.servlet.ServletContextPool;
022    import com.liferay.portal.model.Portlet;
023    import com.liferay.portal.model.PortletApp;
024    
025    import java.util.Iterator;
026    import java.util.Map;
027    import java.util.concurrent.ConcurrentHashMap;
028    
029    import javax.portlet.PortletContext;
030    
031    import javax.servlet.ServletContext;
032    
033    /**
034     * @author Brian Wing Shun Chan
035     */
036    public class PortletContextFactory {
037    
038            public static PortletContext create(
039                    Portlet portlet, ServletContext servletContext) {
040    
041                    return _instance._create(portlet, servletContext);
042            }
043    
044            public static void destroy(Portlet portlet) {
045                    _instance._destroy(portlet);
046            }
047    
048            private PortletContextFactory() {
049                    _pool = new ConcurrentHashMap<String, Map<String, PortletContext>>();
050            }
051    
052            private PortletContext _create(
053                    Portlet portlet, ServletContext servletContext) {
054    
055                    Map<String, PortletContext> portletContexts = _pool.get(
056                            portlet.getRootPortletId());
057    
058                    if (portletContexts == null) {
059                            portletContexts = new ConcurrentHashMap<String, PortletContext>();
060    
061                            _pool.put(portlet.getRootPortletId(), portletContexts);
062                    }
063    
064                    PortletContext portletContext =
065                            portletContexts.get(portlet.getPortletId());
066    
067                    if (portletContext == null) {
068                            PortletApp portletApp = portlet.getPortletApp();
069    
070                            if (portletApp.isWARFile()) {
071                                    PortletBag portletBag = PortletBagPool.get(
072                                            portlet.getRootPortletId());
073    
074                                    if (portletBag == null) {
075                                            _log.error(
076                                                    "Portlet " + portlet.getRootPortletId() +
077                                                            " has a null portlet bag");
078                                    }
079    
080                                    //String mainPath = (String)ctx.getAttribute(WebKeys.MAIN_PATH);
081    
082                                    servletContext = portletBag.getServletContext();
083    
084                                    // Context path for the portal must be passed to individual
085                                    // portlets
086    
087                                    //ctx.setAttribute(WebKeys.MAIN_PATH, mainPath);
088                            }
089    
090                            portletContext = new PortletContextImpl(portlet, servletContext);
091    
092                            portletContexts.put(portlet.getPortletId(), portletContext);
093                    }
094    
095                    return portletContext;
096            }
097    
098            private void _destroy(Portlet portlet) {
099                    Map<String, PortletContext> portletContexts = _pool.remove(
100                            portlet.getRootPortletId());
101    
102                    if (portletContexts == null) {
103                            return;
104                    }
105    
106                    Iterator<Map.Entry<String, PortletContext>> itr =
107                            portletContexts.entrySet().iterator();
108    
109                    if (itr.hasNext()) {
110                            Map.Entry<String, PortletContext> entry = itr.next();
111    
112                            PortletContext portletContext = entry.getValue();
113    
114                            ServletContextPool.remove(portletContext.getPortletContextName());
115                    }
116            }
117    
118            private static Log _log = LogFactoryUtil.getLog(
119                    PortletContextFactory.class);
120    
121            private static PortletContextFactory _instance =
122                    new PortletContextFactory();
123    
124            private Map<String, Map<String, PortletContext>> _pool;
125    
126    }