001    /**
002     *   GRANITE DATA SERVICES
003     *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004     *
005     *   This file is part of Granite Data Services.
006     *
007     *   Granite Data Services is free software; you can redistribute it and/or modify
008     *   it under the terms of the GNU Library General Public License as published by
009     *   the Free Software Foundation; either version 2 of the License, or (at your
010     *   option) any later version.
011     *
012     *   Granite Data Services is distributed in the hope that it will be useful, but
013     *   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014     *   FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015     *   for more details.
016     *
017     *   You should have received a copy of the GNU Library General Public License
018     *   along with this library; if not, see <http://www.gnu.org/licenses/>.
019     */
020    package org.granite.client.messaging;
021    
022    import java.util.HashMap;
023    import java.util.Map;
024    
025    import org.granite.client.messaging.channel.MessagingChannel;
026    
027    /**
028     * @author Franck WOLFF
029     */
030    public abstract class AbstractTopicAgent implements TopicAgent {
031            
032            protected final MessagingChannel channel;
033            protected final String destination;
034            protected final String topic;
035            protected final Map<String, Object> defaultHeaders = new HashMap<String, Object>();
036    
037            public AbstractTopicAgent(MessagingChannel channel, String destination, String topic) {
038                    if (channel == null || destination == null)
039                            throw new NullPointerException("channel and destination cannot be null");
040                    this.channel = channel;
041                    this.destination = destination;
042                    this.topic = topic;
043            }
044    
045            @Override
046            public MessagingChannel getChannel() {
047                    return channel;
048            }
049    
050            @Override
051            public String getDestination() {
052                    return destination;
053            }
054    
055            @Override
056            public String getTopic() {
057                    return topic;
058            }
059            
060            @Override
061            public Map<String, Object> getDefaultHeaders() {
062                    return defaultHeaders;
063            }
064    }