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SingleConnectionFactory102.java
Upload User: jiancairen
Upload Date: 2007-08-27
Package Size: 26458k
Code Size: 4k
Category:
Java Develop
Development Platform:
Java
- package org.springframework.jms.connection;
- import javax.jms.Connection;
- import javax.jms.ConnectionFactory;
- import javax.jms.JMSException;
- import javax.jms.QueueConnectionFactory;
- import javax.jms.TopicConnectionFactory;
- /**
- * A subclass of SingleConnectionFactory that uses the JMS 1.0.2 specification,
- * rather than the JMS 1.1 methods used by SingleConnectionFactory itself.
- * This class can be used for JMS 1.0.2 providers, offering the same API as
- * SingleConnectionFactory does for JMS 1.1 providers.
- *
- * <p>You need to set the pubSubDomain property accordingly, as this class
- * will always create either a QueueConnection or a TopicConnection.
- *
- * @author Juergen Hoeller
- * @since 1.1
- * @see #setTargetConnectionFactory
- * @see #setPubSubDomain
- */
- public class SingleConnectionFactory102 extends SingleConnectionFactory {
- private boolean pubSubDomain = false;
- /**
- * Create a new SingleConnectionFactory102 for bean-style usage.
- */
- public SingleConnectionFactory102() {
- super();
- }
- /**
- * Create a new SingleConnectionFactory102 that always returns a single
- * Connection that it will lazily create via the given target
- * ConnectionFactory.
- * @param connectionFactory the target ConnectionFactory
- * @param pubSubDomain whether the Publish/Subscribe domain (Topics) or
- * Point-to-Point domain (Queues) should be used
- */
- public SingleConnectionFactory102(ConnectionFactory connectionFactory, boolean pubSubDomain) {
- setTargetConnectionFactory(connectionFactory);
- this.pubSubDomain = pubSubDomain;
- afterPropertiesSet();
- }
- /**
- * Configure the factory with knowledge of the JMS domain used.
- * This tells the JMS 1.0.2 provider which class hierarchy to use
- * for creating Connections. Default is Point-to-Point (Queues).
- * @param pubSubDomain true for Publish/Subscribe domain (Topics),
- * false for Point-to-Point domain (Queues)
- */
- public void setPubSubDomain(boolean pubSubDomain) {
- this.pubSubDomain = pubSubDomain;
- }
- /**
- * Return whether the Publish/Subscribe domain (Topics) is used.
- * Otherwise, the Point-to-Point domain (Queues) is used.
- */
- public boolean isPubSubDomain() {
- return pubSubDomain;
- }
- /**
- * In addition to checking if the connection factory is set, make sure
- * that the supplied connection factory is of the appropriate type for
- * the specified destination type: QueueConnectionFactory for queues,
- * and TopicConnectionFactory for topics.
- */
- public void afterPropertiesSet() {
- super.afterPropertiesSet();
- // Make sure that the ConnectionFactory passed is consistent.
- // Some provider implementations of the ConnectionFactory interface
- // implement both domain interfaces under the cover, so just check if
- // the selected domain is consistent with the type of connection factory.
- if (isPubSubDomain()) {
- if (!(getTargetConnectionFactory() instanceof TopicConnectionFactory)) {
- throw new IllegalArgumentException(
- "Specified a Spring JMS 1.0.2 SingleConnectionFactory for topics " +
- "but did not supply an instance of TopicConnectionFactory");
- }
- }
- else {
- if (!(getTargetConnectionFactory() instanceof QueueConnectionFactory)) {
- throw new IllegalArgumentException(
- "Specified a Spring JMS 1.0.2 SingleConnectionFactory for queues " +
- "but did not supply an instance of QueueConnectionFactory");
- }
- }
- }
- /**
- * This implementation overrides the superclass method to use JMS 1.0.2 API.
- */
- protected Connection doCreateConnection() throws JMSException {
- if (isPubSubDomain()) {
- return ((TopicConnectionFactory) getTargetConnectionFactory()).createTopicConnection();
- }
- else {
- return ((QueueConnectionFactory) getTargetConnectionFactory()).createQueueConnection();
- }
- }
- }