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.messaging.config;
016    
017    import java.util.ArrayList;
018    import java.util.List;
019    import java.util.Map;
020    import java.util.concurrent.ConcurrentHashMap;
021    
022    /**
023     * @author Shuyang Zhou
024     */
025    public class MessagingConfiguratorRegistry {
026    
027            public static List<MessagingConfigurator> getMessagingConfigurators(
028                    String servletContextName) {
029    
030                    return _messagingConfigurators.get(servletContextName);
031            }
032    
033            public static void registerMessagingConfigurator(
034                    String servletContextName,
035                    MessagingConfigurator messagingConfigurator) {
036    
037                    List<MessagingConfigurator> messagingConfigurators =
038                            _messagingConfigurators.get(servletContextName);
039    
040                    if (messagingConfigurators == null) {
041                            messagingConfigurators = new ArrayList<MessagingConfigurator>();
042    
043                            _messagingConfigurators.put(
044                                    servletContextName, messagingConfigurators);
045                    }
046    
047                    messagingConfigurators.add(messagingConfigurator);
048            }
049    
050            public static void unregisterMessagingConfigurator(
051                    String servletContextName,
052                    MessagingConfigurator messagingConfigurator) {
053    
054                    List<MessagingConfigurator> messagingConfigurators =
055                            _messagingConfigurators.get(servletContextName);
056    
057                    if (messagingConfigurators != null) {
058                            messagingConfigurators.remove(messagingConfigurator);
059    
060                            if (messagingConfigurators.isEmpty()) {
061                                    _messagingConfigurators.remove(servletContextName);
062                            }
063                    }
064            }
065    
066            private static final Map<String, List<MessagingConfigurator>>
067                    _messagingConfigurators =
068                            new ConcurrentHashMap<String, List<MessagingConfigurator>>();
069    
070    }