001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.broker.region;
018
019import org.apache.activemq.broker.BrokerService;
020import org.apache.activemq.broker.ConnectionContext;
021import org.apache.activemq.command.ActiveMQDestination;
022import org.apache.activemq.command.ActiveMQTempDestination;
023import org.apache.activemq.store.TopicMessageStore;
024import org.apache.activemq.thread.Task;
025import org.apache.activemq.thread.TaskRunnerFactory;
026
027/**
028 * The Topic is a destination that sends a copy of a message to every active
029 * Subscription registered.
030 * 
031 * 
032 */
033public class TempTopic  extends Topic  implements Task{
034    private final ActiveMQTempDestination tempDest;
035    /**
036     * @param brokerService
037     * @param destination
038     * @param store
039     * @param parentStats
040     * @param taskFactory
041     * @throws Exception
042     */
043    public TempTopic(BrokerService brokerService,
044            ActiveMQDestination destination, TopicMessageStore store,
045            DestinationStatistics parentStats, TaskRunnerFactory taskFactory)
046            throws Exception {
047        super(brokerService, destination, store, parentStats, taskFactory);
048        this.tempDest = (ActiveMQTempDestination) destination;
049
050    }
051    
052    public void addSubscription(ConnectionContext context, Subscription sub) throws Exception {
053        // Only consumers on the same connection can consume from
054        // the temporary destination
055        // However, we could have failed over - and we do this
056        // check client side anyways ....
057        if (!context.isFaultTolerant()
058                && (!context.isNetworkConnection() && !tempDest
059                        .getConnectionId().equals(
060                                sub.getConsumerInfo().getConsumerId()
061                                        .getConnectionId()))) {
062
063            tempDest.setConnectionId(sub.getConsumerInfo().getConsumerId().getConnectionId());
064            if (LOG.isDebugEnabled()) {
065                LOG.debug(" changed ownership of " + this + " to "+ tempDest.getConnectionId());
066            }
067        }
068        super.addSubscription(context, sub);
069    } 
070    
071    public void initialize() {
072    }
073}