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.portal.kernel.servlet;
016    
017    import java.util.Collections;
018    import java.util.HashMap;
019    import java.util.HashSet;
020    import java.util.Map;
021    import java.util.Set;
022    
023    /**
024     * @author Brian Wing Shun Chan
025     */
026    public class LiferayFilterTracker {
027    
028            public static void addLiferayFilter(LiferayFilter liferayFilter) {
029                    Class<?> clazz = liferayFilter.getClass();
030    
031                    Set<LiferayFilter> liferayFilters = _liferayFilters.get(
032                            clazz.getName());
033    
034                    if (liferayFilters == null) {
035                            liferayFilters = new HashSet<LiferayFilter>();
036    
037                            _liferayFilters.put(clazz.getName(), liferayFilters);
038                    }
039    
040                    liferayFilters.add(liferayFilter);
041            }
042    
043            public static Set<String> getClassNames() {
044                    return Collections.unmodifiableSet(_liferayFilters.keySet());
045            }
046    
047            public static Set<LiferayFilter> getLiferayFilters(String className) {
048                    Set<LiferayFilter> liferayFilters = _liferayFilters.get(className);
049    
050                    if (liferayFilters == null) {
051                            return Collections.emptySet();
052                    }
053    
054                    return Collections.unmodifiableSet(liferayFilters);
055            }
056    
057            public static void removeLiferayFilter(LiferayFilter liferayFilter) {
058                    Class<?> clazz = liferayFilter.getClass();
059    
060                    Set<LiferayFilter> liferayFilters = _liferayFilters.get(
061                            clazz.getName());
062    
063                    if (liferayFilters != null) {
064                            liferayFilters.remove(liferayFilter);
065                    }
066            }
067    
068            private static Map<String, Set<LiferayFilter>> _liferayFilters =
069                    new HashMap<String, Set<LiferayFilter>>();
070    
071    }