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     */
017    package org.apache.activemq.broker.region;
018    
019    import org.apache.activemq.broker.BrokerService;
020    import org.apache.activemq.broker.ConnectionContext;
021    import org.apache.activemq.command.ActiveMQDestination;
022    import org.apache.activemq.command.ActiveMQTempDestination;
023    import org.apache.activemq.store.TopicMessageStore;
024    import org.apache.activemq.thread.Task;
025    import 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     */
033    public 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    }