org.apache.activemq.broker.region.QueueDispatchSelector Maven / Gradle / Ivy
/**
* 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.activemq.broker.region;
import org.apache.activemq.broker.region.policy.SimpleDispatchSelector;
import org.apache.activemq.command.ActiveMQDestination;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Queue dispatch policy that determines if a message can be sent to a subscription
*
* @org.apache.xbean.XBean
*
*/
public class QueueDispatchSelector extends SimpleDispatchSelector {
private static final Logger LOG = LoggerFactory.getLogger(QueueDispatchSelector.class);
private Subscription exclusiveConsumer;
/**
* @param destination
*/
public QueueDispatchSelector(ActiveMQDestination destination) {
super(destination);
}
public Subscription getExclusiveConsumer() {
return exclusiveConsumer;
}
public void setExclusiveConsumer(Subscription exclusiveConsumer) {
this.exclusiveConsumer = exclusiveConsumer;
}
public boolean isExclusiveConsumer(Subscription s) {
return s == this.exclusiveConsumer;
}
public boolean canSelect(Subscription subscription,
MessageReference m) throws Exception {
boolean result = super.canDispatch(subscription, m);
if (result && !subscription.isBrowser()) {
result = exclusiveConsumer == null || exclusiveConsumer == subscription;
}
return result;
}
}