/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.camel.component.jms;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TemporaryQueue;
import javax.jms.TemporaryTopic;
import org.springframework.jms.core.JmsOperations;
import org.springframework.jms.core.SessionCallback;
/**
* A class which represents some metadata about the underlying JMS provider
* so that we can properly bridge JMS providers such as for dealing with temporary destinations.
*
* @version
*/
public class JmsProviderMetadata {
private Class<? extends TemporaryQueue> temporaryQueueType;
private Class<? extends TemporaryTopic> temporaryTopicType;
/**
* Lazily loads the temporary queue type if one has not been explicitly configured
* via calling the {@link #setTemporaryQueueType(Class)}
*/
public Class<? extends TemporaryQueue> getTemporaryQueueType(JmsOperations template) {
Class<? extends TemporaryQueue> answer = getTemporaryQueueType();
if (answer == null) {
loadTemporaryDestinationTypes(template);
answer = getTemporaryQueueType();
}
return answer;
}
/**
* Lazily loads the temporary topic type if one has not been explicitly configured
* via calling the {@link #setTemporaryTopicType(Class)}
*/
public Class<? extends TemporaryTopic> getTemporaryTopicType(JmsOperations template) {
Class<? extends TemporaryTopic> answer = getTemporaryTopicType();
if (answer == null) {
loadTemporaryDestinationTypes(template);
answer = getTemporaryTopicType();
}
return answer;
}
// Properties
//-------------------------------------------------------------------------
public Class<? extends TemporaryQueue> getTemporaryQueueType() {
return temporaryQueueType;
}
public void setTemporaryQueueType(Class<? extends TemporaryQueue> temporaryQueueType) {
this.temporaryQueueType = temporaryQueueType;
}
public Class<? extends TemporaryTopic> getTemporaryTopicType() {
return temporaryTopicType;
}
public void setTemporaryTopicType(Class<? extends TemporaryTopic> temporaryTopicType) {
this.temporaryTopicType = temporaryTopicType;
}
// Implementation methods
//-------------------------------------------------------------------------
protected void loadTemporaryDestinationTypes(JmsOperations template) {
if (template == null) {
throw new IllegalArgumentException("No JmsTemplate supplied!");
}
template.execute(new SessionCallback() {
public Object doInJms(Session session) throws JMSException {
TemporaryQueue queue = session.createTemporaryQueue();
setTemporaryQueueType(queue.getClass());
TemporaryTopic topic = session.createTemporaryTopic();
setTemporaryTopicType(topic.getClass());
queue.delete();
topic.delete();
return null;
}
});
}
}