001    /**
002     * Copyright (c) 2000-present 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.util.InstanceFactory;
018    import com.liferay.portal.model.PortletApp;
019    import com.liferay.portal.model.PortletURLListener;
020    
021    import java.util.Map;
022    import java.util.concurrent.ConcurrentHashMap;
023    
024    import javax.portlet.PortletException;
025    import javax.portlet.PortletURLGenerationListener;
026    import javax.portlet.UnavailableException;
027    
028    /**
029     * @author Brian Wing Shun Chan
030     */
031    public class PortletURLListenerFactory {
032    
033            public static PortletURLGenerationListener create(
034                            PortletURLListener portletURLListener)
035                    throws PortletException {
036    
037                    return _instance._create(portletURLListener);
038            }
039    
040            public static void destroy(PortletURLListener portletURLListener) {
041                    _instance._destroy(portletURLListener);
042            }
043    
044            private PortletURLListenerFactory() {
045                    _pool = new ConcurrentHashMap<>();
046            }
047    
048            private PortletURLGenerationListener _create(
049                            PortletURLListener portletURLListener)
050                    throws PortletException {
051    
052                    PortletApp portletApp = portletURLListener.getPortletApp();
053    
054                    Map<String, PortletURLGenerationListener>
055                            portletURLGenerationListeners = _pool.get(
056                                    portletApp.getServletContextName());
057    
058                    if (portletURLGenerationListeners == null) {
059                            portletURLGenerationListeners = new ConcurrentHashMap<>();
060    
061                            _pool.put(
062                                    portletApp.getServletContextName(),
063                                    portletURLGenerationListeners);
064                    }
065    
066                    PortletURLGenerationListener portletURLGenerationListener =
067                            portletURLGenerationListeners.get(
068                                    portletURLListener.getListenerClass());
069    
070                    if (portletURLGenerationListener != null) {
071                            return portletURLGenerationListener;
072                    }
073    
074                    if (portletApp.isWARFile()) {
075                            PortletContextBag portletContextBag = PortletContextBagPool.get(
076                                    portletApp.getServletContextName());
077    
078                            portletURLGenerationListener =
079                                    portletContextBag.getPortletURLListeners().get(
080                                            portletURLListener.getListenerClass());
081    
082                            portletURLGenerationListener = _init(
083                                    portletURLListener, portletURLGenerationListener);
084                    }
085                    else {
086                            portletURLGenerationListener = _init(portletURLListener);
087                    }
088    
089                    portletURLGenerationListeners.put(
090                            portletURLListener.getListenerClass(),
091                            portletURLGenerationListener);
092    
093                    return portletURLGenerationListener;
094            }
095    
096            private void _destroy(PortletURLListener portletURLListener) {
097                    PortletApp portletApp = portletURLListener.getPortletApp();
098    
099                    Map<String, PortletURLGenerationListener>
100                            portletURLGenerationListeners = _pool.get(
101                                    portletApp.getServletContextName());
102    
103                    if (portletURLGenerationListeners == null) {
104                            return;
105                    }
106    
107                    PortletURLGenerationListener portletURLGenerationListener =
108                            portletURLGenerationListeners.get(
109                                    portletURLListener.getListenerClass());
110    
111                    if (portletURLGenerationListener == null) {
112                            return;
113                    }
114    
115                    portletURLGenerationListeners.remove(
116                            portletURLListener.getListenerClass());
117            }
118    
119            private PortletURLGenerationListener _init(
120                            PortletURLListener portletURLListener)
121                    throws PortletException {
122    
123                    return _init(portletURLListener, null);
124            }
125    
126            private PortletURLGenerationListener _init(
127                            PortletURLListener portletURLListener,
128                            PortletURLGenerationListener portletURLGenerationListener)
129                    throws PortletException {
130    
131                    try {
132                            if (portletURLGenerationListener == null) {
133                                    portletURLGenerationListener =
134                                            (PortletURLGenerationListener)InstanceFactory.newInstance(
135                                                    portletURLListener.getListenerClass());
136                            }
137                    }
138                    catch (Exception e) {
139                            throw new UnavailableException(e.getMessage());
140                    }
141    
142                    return portletURLGenerationListener;
143            }
144    
145            private static final PortletURLListenerFactory _instance =
146                    new PortletURLListenerFactory();
147    
148            private final Map<String, Map<String, PortletURLGenerationListener>> _pool;
149    
150    }