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.virtual;
018
019import org.apache.activemq.broker.ProducerBrokerExchange;
020import org.apache.activemq.broker.region.Destination;
021import org.apache.activemq.broker.region.DestinationFilter;
022import org.apache.activemq.command.ActiveMQDestination;
023import org.apache.activemq.command.ActiveMQQueue;
024import 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 */
032public 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}