| /** |
| * 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 java.io.IOException; |
| import java.util.List; |
| |
| import javax.jms.JMSException; |
| |
| import org.apache.activemq.broker.region.group.MessageGroupMap; |
| import org.apache.activemq.broker.region.policy.SimpleDispatchSelector; |
| import org.apache.activemq.command.ActiveMQDestination; |
| import org.apache.activemq.command.ActiveMQMessage; |
| import org.apache.activemq.command.ConsumerId; |
| import org.apache.activemq.command.Message; |
| 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; |
| } |
| |
| } |