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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.qpid.client;
import org.apache.qpid.url.BindingURL;
import org.apache.qpid.exchange.ExchangeDefaults;
import javax.jms.JMSException;
import javax.jms.Topic;
public class AMQTopic extends AMQDestination implements Topic
{
/**
* Constructor for use in creating a topic using a BindingURL.
*
* @param binding The binding url object.
*/
public AMQTopic(BindingURL binding)
{
super(binding);
}
public AMQTopic(String name)
{
super(ExchangeDefaults.TOPIC_EXCHANGE_NAME, ExchangeDefaults.TOPIC_EXCHANGE_CLASS, name, true, true, null);
_isDurable = false;
}
/**
* Constructor for use in creating a topic to represent a durable subscription
* @param topic
* @param clientId
* @param subscriptionName
*/
public AMQTopic(AMQTopic topic, String clientId, String subscriptionName)
{
super(ExchangeDefaults.TOPIC_EXCHANGE_NAME, ExchangeDefaults.TOPIC_EXCHANGE_CLASS, topic.getDestinationName(), true, false, clientId + ":" + subscriptionName);
_isDurable = true;
}
public String getTopicName() throws JMSException
{
return super.getDestinationName();
}
public String getEncodedName()
{
return 'T' + getDestinationName();
}
public String getRoutingKey()
{
return getDestinationName();
}
public boolean isNameRequired()
{
// Topics always rely on a server generated queue name.
return false;
}
/**
* Override since the queue is always private and we must ensure it remains null. If not,
* reuse of the topic when registering consumers will make all consumers listen on the same (private) queue rather
* than getting their own (private) queue.
*
* This is relatively nasty but it is difficult to come up with a more elegant solution, given
* the requirement in the case on AMQQueue and possibly other AMQDestination subclasses to
* use the underlying queue name even where it is server generated.
*/
public void setQueueName(String queueName)
{
}
}
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