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.command;
018    
019    import javax.jms.Destination;
020    import javax.jms.JMSException;
021    import javax.jms.Queue;
022    import javax.jms.Topic;
023    import java.lang.reflect.Method;
024    
025    public class DefaultUnresolvedDestinationTransformer implements UnresolvedDestinationTransformer {
026    
027        @Override
028        public ActiveMQDestination transform(Destination dest) throws JMSException {
029            String queueName = ((Queue) dest).getQueueName();
030            String topicName = ((Topic) dest).getTopicName();
031    
032            if (queueName == null && topicName == null) {
033                throw new JMSException("Unresolvable destination: Both queue and topic names are null: " + dest);
034            }
035            try {
036                Method isQueueMethod = dest.getClass().getMethod("isQueue");
037                Method isTopicMethod = dest.getClass().getMethod("isTopic");
038                Boolean isQueue = (Boolean) isQueueMethod.invoke(dest);
039                Boolean isTopic = (Boolean) isTopicMethod.invoke(dest);
040                if (isQueue) {
041                    return new ActiveMQQueue(queueName);
042                } else if (isTopic) {
043                    return new ActiveMQTopic(topicName);
044                } else {
045                    throw new JMSException("Unresolvable destination: Neither Queue nor Topic: " + dest);
046                }
047            } catch (Exception e)  {
048                throw new JMSException("Unresolvable destination: "  + e.getMessage() + ": " + dest);
049            }
050        }
051    
052        @Override
053        public ActiveMQDestination transform(String dest) throws JMSException {
054            return new ActiveMQQueue(dest);
055        }
056    }