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Spring Framework example source code file (DefaultMessageListenerContainer102.java)

This example Spring Framework source code file (DefaultMessageListenerContainer102.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

class, connection, connection, jmsexception, jmsexception, messageconsumer, queueconnectionfactory, queuesession, session, topic, topic, topicconnection, topicsession, topicsession

The Spring Framework DefaultMessageListenerContainer102.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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.springframework.jms.listener;

import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;

import org.springframework.jms.connection.JmsResourceHolder;

/**
 * A subclass of {@link DefaultMessageListenerContainer} for the JMS 1.0.2 specification,
 * not relying on JMS 1.1 methods like SimpleMessageListenerContainer itself.
 *
 * <p>This class can be used for JMS 1.0.2 providers, offering the same facility as
 * DefaultMessageListenerContainer does for JMS 1.1 providers.
 *
 * @author Juergen Hoeller
 * @since 2.0
 */
public class DefaultMessageListenerContainer102 extends DefaultMessageListenerContainer {

	/**
	 * This implementation overrides the superclass method to accept either
	 * a QueueConnection or a TopicConnection, depending on the domain.
	 */
	protected Connection getConnection(JmsResourceHolder holder) {
		return holder.getConnection(isPubSubDomain() ? (Class) TopicConnection.class : QueueConnection.class);
	}

	/**
	 * This implementation overrides the superclass method to accept either
	 * a QueueSession or a TopicSession, depending on the domain.
	 */
	protected Session getSession(JmsResourceHolder holder) {
		return holder.getSession(isPubSubDomain() ? (Class) TopicSession.class : QueueSession.class);
	}

	/**
	 * This implementation overrides the superclass method to use JMS 1.0.2 API.
	 */
	protected Connection createConnection() throws JMSException {
		if (isPubSubDomain()) {
			return ((TopicConnectionFactory) getConnectionFactory()).createTopicConnection();
		}
		else {
			return ((QueueConnectionFactory) getConnectionFactory()).createQueueConnection();
		}
	}

	/**
	 * This implementation overrides the superclass method to use JMS 1.0.2 API.
	 */
	protected Session createSession(Connection con) throws JMSException {
		if (isPubSubDomain()) {
			return ((TopicConnection) con).createTopicSession(isSessionTransacted(), getSessionAcknowledgeMode());
		}
		else {
			return ((QueueConnection) con).createQueueSession(isSessionTransacted(), getSessionAcknowledgeMode());
		}
	}

	/**
	 * This implementation overrides the superclass method to use JMS 1.0.2 API.
	 */
	protected MessageConsumer createConsumer(Session session, Destination destination) throws JMSException {
		if (isPubSubDomain()) {
			if (isSubscriptionDurable()) {
				return ((TopicSession) session).createDurableSubscriber(
						(Topic) destination, getDurableSubscriptionName(), getMessageSelector(), isPubSubNoLocal());
			}
			else {
				return ((TopicSession) session).createSubscriber(
						(Topic) destination, getMessageSelector(), isPubSubNoLocal());
			}
		}
		else {
			return ((QueueSession) session).createReceiver((Queue) destination, getMessageSelector());
		}
	}

	/**
	 * This implementation overrides the superclass method to avoid using
	 * JMS 1.1's Session <code>getAcknowledgeMode() method.
	 * The best we can do here is to check the setting on the listener container.
	 */
	protected boolean isClientAcknowledge(Session session) throws JMSException {
		return (getSessionAcknowledgeMode() == Session.CLIENT_ACKNOWLEDGE);
	}

}

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