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.virtual;
018    
019    import org.apache.activemq.broker.ProducerBrokerExchange;
020    import org.apache.activemq.broker.region.Destination;
021    import org.apache.activemq.broker.region.DestinationFilter;
022    import org.apache.activemq.command.ActiveMQDestination;
023    import org.apache.activemq.command.ActiveMQQueue;
024    import org.apache.activemq.command.Message;
025    
026    /**
027     * A Destination which implements <a
028     * href="http://activemq.org/site/virtual-destinations.html">Virtual Topic</a>
029     * 
030     * 
031     */
032    public class VirtualTopicInterceptor extends DestinationFilter {
033    
034        private String prefix;
035        private String postfix;
036    
037        public VirtualTopicInterceptor(Destination next, String prefix, String postfix) {
038            super(next);
039            this.prefix = prefix;
040            this.postfix = postfix;
041        }
042    
043        public void send(ProducerBrokerExchange context, Message message) throws Exception {
044            if (!message.isAdvisory()) {
045                ActiveMQDestination queueConsumers = getQueueConsumersWildcard(message.getDestination());
046                send(context, message, queueConsumers);
047            }
048            super.send(context, message);
049        }
050    
051        protected ActiveMQDestination getQueueConsumersWildcard(ActiveMQDestination original) {
052            return new ActiveMQQueue(prefix + original.getPhysicalName() + postfix);
053        }
054    }