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.util; 018 019 import javax.jms.Destination; 020 import javax.jms.JMSException; 021 import javax.jms.Message; 022 023 import org.apache.activemq.command.ActiveMQMessage; 024 025 /** 026 * A comparator which works on SendCommand objects to compare the destinations 027 * 028 * 029 */ 030 public class MessageDestinationComparator extends MessageComparatorSupport { 031 032 protected int compareMessages(Message message1, Message message2) { 033 return compareComparators(getComparable(getDestination(message1)), getComparable(getDestination(message2))); 034 } 035 036 protected Destination getDestination(Message message) { 037 if (message instanceof ActiveMQMessage) { 038 ActiveMQMessage amqMessage = (ActiveMQMessage)message; 039 return amqMessage.getDestination(); 040 } 041 try { 042 return message.getJMSDestination(); 043 } catch (JMSException e) { 044 return null; 045 } 046 } 047 048 protected Comparable getComparable(Destination destination) { 049 if (destination != null) { 050 return destination.toString(); 051 } 052 return null; 053 } 054 055 }