bitronix.tm.resource.jms.MessageProducerConsumerKey Maven / Gradle / Ivy
/*
* Copyright (C) 2006-2013 Bitronix Software (http://www.bitronix.be)
*
* 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 bitronix.tm.resource.jms;
import bitronix.tm.internal.BitronixRuntimeException;
import jakarta.jms.Destination;
import jakarta.jms.JMSException;
import jakarta.jms.Queue;
import jakarta.jms.Topic;
/**
* JMS destination wrapper optimized for use with hashed collections where it is the key and a
* {@link jakarta.jms.MessageProducer} or a {@link jakarta.jms.MessageConsumer} is the value.
*
* @author Ludovic Orban
*/
public class MessageProducerConsumerKey
{
private final Destination destination;
private final String messageSelector;
private final Boolean noLocal;
/**
* Constructor MessageProducerConsumerKey creates a new MessageProducerConsumerKey instance.
*
* @param destination
* of type Destination
*/
public MessageProducerConsumerKey(Destination destination)
{
this.destination = destination;
this.messageSelector = null;
this.noLocal = null;
}
/**
* Constructor MessageProducerConsumerKey creates a new MessageProducerConsumerKey instance.
*
* @param destination
* of type Destination
* @param messageSelector
* of type String
*/
public MessageProducerConsumerKey(Destination destination, String messageSelector)
{
this.destination = destination;
this.messageSelector = messageSelector;
this.noLocal = null;
}
/**
* Constructor MessageProducerConsumerKey creates a new MessageProducerConsumerKey instance.
*
* @param destination
* of type Destination
* @param messageSelector
* of type String
* @param noLocal
* of type boolean
*/
public MessageProducerConsumerKey(Destination destination, String messageSelector, boolean noLocal)
{
this.destination = destination;
this.messageSelector = messageSelector;
this.noLocal = noLocal;
}
/**
* Method hashCode ...
*
* @return int
*/
@Override
public int hashCode()
{
return hash(getDestinationName()) + hash(messageSelector) + hash(noLocal);
}
/**
* Method equals ...
*
* @param obj
* of type Object
*
* @return boolean
*/
@Override
public boolean equals(Object obj)
{
if (obj instanceof MessageProducerConsumerKey)
{
MessageProducerConsumerKey otherKey = (MessageProducerConsumerKey) obj;
if (!areEquals(getDestinationName(), otherKey.getDestinationName()))
{
return false;
}
if (!areEquals(messageSelector, otherKey.messageSelector))
{
return false;
}
return areEquals(noLocal, otherKey.noLocal);
}
return false;
}
/**
* Method areEquals ...
*
* @param o1
* of type Object
* @param o2
* of type Object
*
* @return boolean
*/
private static boolean areEquals(Object o1, Object o2)
{
if (o1 == null && o2 == null)
{
return true;
}
if (o1 != null && o2 == null)
{
return false;
}
if (o1 == null)
{
return false;
}
return o1.equals(o2);
}
/**
* Method toString ...
*
* @return String
*/
@Override
public String toString()
{
return "a MessageProducerConsumerKey on " + destination +
(messageSelector == null ? "" : (" with selector '" + messageSelector) + "'") +
(noLocal == null ? "" : (" and noLocal=" + noLocal));
}
/**
* Method hash ...
*
* @param o
* of type Object
*
* @return int
*/
private static int hash(Object o)
{
if (o == null)
{
return 0;
}
return o.hashCode();
}
/**
* Method getDestinationName returns the destinationName of this MessageProducerConsumerKey object.
*
* @return the destinationName (type String) of this MessageProducerConsumerKey object.
*/
private String getDestinationName()
{
if (destination == null)
{
return null;
}
else if (destination instanceof Queue)
{
try
{
return ((Queue) destination).getQueueName();
}
catch (JMSException ex)
{
throw new BitronixRuntimeException("error getting queue name of " + destination, ex);
}
}
else if (destination instanceof Topic)
{
try
{
return ((Topic) destination).getTopicName();
}
catch (JMSException ex)
{
throw new BitronixRuntimeException("error getting topic name of " + destination, ex);
}
}
else
{
throw new IllegalArgumentException("unsupported destination: " + destination);
}
}
}