001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.activemq.broker.region.policy; 018 019 import org.apache.activemq.broker.region.MessageReference; 020 import org.apache.activemq.broker.region.Subscription; 021 import org.apache.activemq.command.ActiveMQDestination; 022 import org.apache.activemq.filter.MessageEvaluationContext; 023 import org.apache.activemq.filter.NonCachedMessageEvaluationContext; 024 025 /** 026 * Simple dispatch policy that determines if a message can be sent to a subscription 027 * 028 * @org.apache.xbean.XBean 029 * 030 */ 031 public class SimpleDispatchSelector implements DispatchSelector { 032 033 private final ActiveMQDestination destination; 034 035 /** 036 * @param destination 037 */ 038 public SimpleDispatchSelector(ActiveMQDestination destination) { 039 this.destination = destination; 040 } 041 042 public boolean canDispatch(Subscription subscription, MessageReference node) throws Exception { 043 MessageEvaluationContext msgContext = new NonCachedMessageEvaluationContext(); 044 msgContext.setDestination(this.destination); 045 msgContext.setMessageReference(node); 046 return subscription.matches(node, msgContext); 047 } 048 }