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 */ 017package org.apache.activemq.broker.region.policy; 018 019import java.util.List; 020import org.apache.activemq.broker.region.MessageReference; 021import org.apache.activemq.broker.region.Subscription; 022import org.apache.activemq.filter.MessageEvaluationContext; 023 024/** 025 * Simple dispatch policy that sends a message to every subscription that 026 * matches the message. 027 * 028 * @org.apache.xbean.XBean 029 * 030 */ 031public class SimpleDispatchPolicy implements DispatchPolicy { 032 033 public boolean dispatch(MessageReference node, MessageEvaluationContext msgContext, List<Subscription> consumers) 034 throws Exception { 035 036 int count = 0; 037 for (Subscription sub : consumers) { 038 // Don't deliver to browsers 039 if (sub.getConsumerInfo().isBrowser()) { 040 continue; 041 } 042 // Only dispatch to interested subscriptions 043 if (!sub.matches(node, msgContext)) { 044 sub.unmatched(node); 045 continue; 046 } 047 048 sub.add(node); 049 count++; 050 } 051 052 return count > 0; 053 } 054 055}