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 java.util.Iterator; 020 import java.util.List; 021 import org.apache.activemq.broker.region.MessageReference; 022 import org.apache.activemq.broker.region.Subscription; 023 import org.apache.activemq.filter.MessageEvaluationContext; 024 025 /** 026 * Simple dispatch policy that sends a message to every subscription that 027 * matches the message. 028 * 029 * @org.apache.xbean.XBean 030 * @version $Revision$ 031 */ 032 public class SimpleDispatchPolicy implements DispatchPolicy { 033 034 public boolean dispatch(MessageReference node,MessageEvaluationContext msgContext, List<Subscription> consumers) 035 throws Exception { 036 037 int count = 0; 038 synchronized (consumers) { 039 for (Subscription sub:consumers) { 040 // Don't deliver to browsers 041 if (sub.getConsumerInfo().isBrowser()) { 042 continue; 043 } 044 // Only dispatch to interested subscriptions 045 if (!sub.matches(node, msgContext)) { 046 continue; 047 } 048 049 sub.add(node); 050 count++; 051 } 052 } 053 return count > 0; 054 } 055 056 }