001    /**
002     * Copyright (c) 2000-2013 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    
020    import java.util.Map;
021    import java.util.concurrent.ConcurrentHashMap;
022    
023    import javax.portlet.PortletContext;
024    import javax.portlet.PortletException;
025    import javax.portlet.UnavailableException;
026    import javax.portlet.filter.FilterConfig;
027    import javax.portlet.filter.PortletFilter;
028    
029    /**
030     * @author Brian Wing Shun Chan
031     */
032    public class PortletFilterFactory {
033    
034            public static PortletFilter create(
035                            com.liferay.portal.model.PortletFilter portletFilterModel,
036                            PortletContext ctx)
037                    throws PortletException {
038    
039                    return _instance._create(portletFilterModel, ctx);
040            }
041    
042            public static void destroy(
043                    com.liferay.portal.model.PortletFilter portletFilterModel) {
044    
045                    _instance._destroy(portletFilterModel);
046            }
047    
048            private PortletFilterFactory() {
049                    _portletFilters =
050                            new ConcurrentHashMap<String, Map<String, PortletFilter>>();
051            }
052    
053            private PortletFilter _create(
054                            com.liferay.portal.model.PortletFilter portletFilterModel,
055                            PortletContext portletContext)
056                    throws PortletException {
057    
058                    PortletApp portletApp = portletFilterModel.getPortletApp();
059    
060                    Map<String, PortletFilter> portletFilters = _portletFilters.get(
061                            portletApp.getServletContextName());
062    
063                    if (portletFilters == null) {
064                            portletFilters = new ConcurrentHashMap<String, PortletFilter>();
065    
066                            _portletFilters.put(
067                                    portletApp.getServletContextName(), portletFilters);
068                    }
069    
070                    PortletFilter portletFilter = portletFilters.get(
071                            portletFilterModel.getFilterName());
072    
073                    if (portletFilter != null) {
074                            return portletFilter;
075                    }
076    
077                    FilterConfig filterConfig = FilterConfigFactory.create(
078                            portletFilterModel, portletContext);
079    
080                    if (portletApp.isWARFile()) {
081                            PortletContextBag portletContextBag = PortletContextBagPool.get(
082                                    portletApp.getServletContextName());
083    
084                            Map<String, PortletFilter> curPortletFilters =
085                                    portletContextBag.getPortletFilters();
086    
087                            portletFilter = curPortletFilters.get(
088                                    portletFilterModel.getFilterName());
089    
090                            portletFilter = _init(
091                                    portletFilterModel, filterConfig, portletFilter);
092                    }
093                    else {
094                            portletFilter = _init(portletFilterModel, filterConfig);
095                    }
096    
097                    portletFilters.put(portletFilterModel.getFilterName(), portletFilter);
098    
099                    return portletFilter;
100            }
101    
102            private void _destroy(
103                    com.liferay.portal.model.PortletFilter portletFilterModel) {
104    
105                    PortletApp portletApp = portletFilterModel.getPortletApp();
106    
107                    Map<String, PortletFilter> portletFilters = _portletFilters.get(
108                            portletApp.getServletContextName());
109    
110                    if (portletFilters == null) {
111                            return;
112                    }
113    
114                    PortletFilter portletFilter = portletFilters.get(
115                            portletFilterModel.getFilterName());
116    
117                    if (portletFilter == null) {
118                            return;
119                    }
120    
121                    portletFilter.destroy();
122    
123                    portletFilters.remove(portletFilterModel.getFilterName());
124    
125                    FilterConfigFactory.destroy(portletFilterModel);
126            }
127    
128            private PortletFilter _init(
129                            com.liferay.portal.model.PortletFilter portletFilterModel,
130                            FilterConfig filterConfig)
131                    throws PortletException {
132    
133                    return _init(portletFilterModel, filterConfig, null);
134            }
135    
136            private PortletFilter _init(
137                            com.liferay.portal.model.PortletFilter portletFilterModel,
138                            FilterConfig filterConfig, PortletFilter portletFilter)
139                    throws PortletException {
140    
141                    try {
142                            if (portletFilter == null) {
143                                    portletFilter = (PortletFilter)InstanceFactory.newInstance(
144                                            portletFilterModel.getFilterClass());
145                            }
146    
147                            portletFilter.init(filterConfig);
148                    }
149                    catch (PortletException pe) {
150                            throw pe;
151                    }
152                    catch (Exception e) {
153                            throw new UnavailableException(e.getMessage());
154                    }
155    
156                    return portletFilter;
157            }
158    
159            private static PortletFilterFactory _instance = new PortletFilterFactory();
160    
161            private Map<String, Map<String, PortletFilter>> _portletFilters;
162    
163    }