org.springframework.jms.support.destination.JndiDestinationResolver Maven / Gradle / Ivy
/*
* Copyright 2002-2004 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.support.destination;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.naming.NamingException;
import org.springframework.jndi.JndiLocatorSupport;
/**
* Implementation of the DestinationResolver interface which interprets
* destination names as JNDI locations, falling back to dynamic destinations else.
*
* Allows for customizing the JNDI environment if necessary,
* for example specifying appropriate JNDI environment properties.
*
*
Dynamic queues and topics get cached by destination name.
* Thus, use unique destination names across both queues and topics.
* Caching can be turned off by specifying "cache" as "false", if desired.
*
* Automatic creation of dynamic destinations is turned off by default.
* Specify "fallbackToDynamicDestination" as "true" to enable this functionality.
*
* @author Mark Pollack
* @author Juergen Hoeller
* @since 1.1
* @see #setJndiTemplate
* @see #setJndiEnvironment
* @see #setCache
* @see #setFallbackToDynamicDestination
*/
public class JndiDestinationResolver extends JndiLocatorSupport implements DestinationResolver {
private boolean cache = true;
private boolean fallbackToDynamicDestination = false;
private DestinationResolver dynamicDestinationResolver = new DynamicDestinationResolver();
private final Map destinationCache = Collections.synchronizedMap(new HashMap());
/**
* Set whether to cache resolved destinations. Default is true.
*
Can be turned off to re-lookup a destination for each operation,
* which allows for hot restarting of destinations. This is mainly
* useful during development.
*/
public void setCache(boolean cache) {
this.cache = cache;
}
/**
* Set the ability of JmsTemplate to create dynamic destinations
* if the destination name is not found in JNDI. Default is false.
*/
public void setFallbackToDynamicDestination(boolean fallbackToDynamicDestination) {
this.fallbackToDynamicDestination = fallbackToDynamicDestination;
}
/**
* Set the DestinationResolver to use when falling back to dynamic destinations.
* Default is a DynamicDestinationResolver.
* @see #setFallbackToDynamicDestination
* @see DynamicDestinationResolver
*/
public void setDynamicDestinationResolver(DestinationResolver dynamicDestinationResolver) {
this.dynamicDestinationResolver = dynamicDestinationResolver;
}
public Destination resolveDestinationName(Session session, String destinationName, boolean pubSubDomain)
throws JMSException {
Destination dest = (Destination) this.destinationCache.get(destinationName);
if (dest == null) {
try {
dest = (Destination) lookup(destinationName);
}
catch (NamingException ex) {
logger.debug("Destination [" + destinationName + "] not found in JNDI", ex);
if (this.fallbackToDynamicDestination) {
dest = this.dynamicDestinationResolver.resolveDestinationName(session, destinationName, pubSubDomain);
}
else {
throw new DestinationResolutionException(
"Destination [" + destinationName + "] not found in JNDI", ex);
}
}
if (this.cache) {
this.destinationCache.put(destinationName, dest);
}
}
return dest;
}
}