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.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                            FilterConfig filterConfig = FilterConfigFactory.create(
075                                    portletFilterModel, portletContext);
076    
077                            if (portletApp.isWARFile()) {
078                                    PortletContextBag portletContextBag = PortletContextBagPool.get(
079                                            portletApp.getServletContextName());
080    
081                                    Map<String, PortletFilter> curPortletFilters =
082                                            portletContextBag.getPortletFilters();
083    
084                                    portletFilter = curPortletFilters.get(
085                                            portletFilterModel.getFilterName());
086    
087                                    portletFilter = _init(
088                                            portletFilterModel, filterConfig, portletFilter);
089                            }
090                            else {
091                                    portletFilter = _init(portletFilterModel, filterConfig);
092                            }
093    
094                            portletFilters.put(
095                                    portletFilterModel.getFilterName(), portletFilter);
096                    }
097    
098                    return portletFilter;
099            }
100    
101            private void _destroy(
102                    com.liferay.portal.model.PortletFilter portletFilterModel) {
103    
104                    PortletApp portletApp = portletFilterModel.getPortletApp();
105    
106                    Map<String, PortletFilter> portletFilters = _portletFilters.get(
107                            portletApp.getServletContextName());
108    
109                    if (portletFilters == null) {
110                            return;
111                    }
112    
113                    PortletFilter portletFilter = portletFilters.get(
114                            portletFilterModel.getFilterName());
115    
116                    if (portletFilter == null) {
117                            return;
118                    }
119    
120                    portletFilter.destroy();
121    
122                    portletFilters.remove(portletFilterModel.getFilterName());
123    
124                    FilterConfigFactory.destroy(portletFilterModel);
125            }
126    
127            private PortletFilter _init(
128                            com.liferay.portal.model.PortletFilter portletFilterModel,
129                            FilterConfig filterConfig)
130                    throws PortletException {
131    
132                    return _init(portletFilterModel, filterConfig, null);
133            }
134    
135            private PortletFilter _init(
136                            com.liferay.portal.model.PortletFilter portletFilterModel,
137                            FilterConfig filterConfig, PortletFilter portletFilter)
138                    throws PortletException {
139    
140                    try {
141                            if (portletFilter == null) {
142                                    portletFilter = (PortletFilter)InstanceFactory.newInstance(
143                                            portletFilterModel.getFilterClass());
144                            }
145    
146                            portletFilter.init(filterConfig);
147                    }
148                    catch (PortletException pe) {
149                            throw pe;
150                    }
151                    catch (Exception e) {
152                            throw new UnavailableException(e.getMessage());
153                    }
154    
155                    return portletFilter;
156            }
157    
158            private static PortletFilterFactory _instance = new PortletFilterFactory();
159    
160            private Map<String, Map<String, PortletFilter>> _portletFilters;
161    
162    }