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.camel.model; 018 019 import java.util.List; 020 import java.util.concurrent.Executor; 021 022 import javax.xml.bind.annotation.XmlAccessType; 023 import javax.xml.bind.annotation.XmlAccessorType; 024 import javax.xml.bind.annotation.XmlAttribute; 025 import javax.xml.bind.annotation.XmlRootElement; 026 import javax.xml.bind.annotation.XmlTransient; 027 028 import org.apache.camel.Processor; 029 import org.apache.camel.processor.MulticastProcessor; 030 import org.apache.camel.processor.aggregate.AggregationStrategy; 031 import org.apache.camel.processor.aggregate.UseLatestAggregationStrategy; 032 import org.apache.camel.processor.interceptor.StreamCachingInterceptor; 033 import org.apache.camel.spi.RouteContext; 034 035 /** 036 * Represents an XML <multicast/> element 037 * 038 * @version $Revision: 750806 $ 039 */ 040 @XmlRootElement(name = "multicast") 041 @XmlAccessorType(XmlAccessType.FIELD) 042 public class MulticastDefinition extends OutputDefinition<ProcessorDefinition> { 043 @XmlAttribute(required = false) 044 private Boolean parallelProcessing; 045 @XmlAttribute(required = false) 046 private String strategyRef; 047 @XmlAttribute(required = false) 048 private String threadPoolRef; 049 @XmlTransient 050 private AggregationStrategy aggregationStrategy; 051 @XmlTransient 052 private Executor executor; 053 054 @Override 055 public String toString() { 056 return "Multicast[" + getOutputs() + "]"; 057 } 058 059 @Override 060 public String getShortName() { 061 return "multicast"; 062 } 063 064 @Override 065 public Processor createProcessor(RouteContext routeContext) throws Exception { 066 return createOutputsProcessor(routeContext); 067 } 068 069 // Fluent API 070 // ------------------------------------------------------------------------- 071 072 /** 073 * Set the multicasting aggregationStrategy 074 * 075 * @return the builder 076 */ 077 public MulticastDefinition aggregationStrategy(AggregationStrategy aggregationStrategy) { 078 setAggregationStrategy(aggregationStrategy); 079 return this; 080 } 081 082 /** 083 * use a thread pool to do the multicasting work 084 * 085 * @return the builder 086 */ 087 public MulticastDefinition parallelProcessing() { 088 setParallelProcessing(true); 089 return this; 090 } 091 092 /** 093 * Set the multicasting action's thread model 094 * 095 * @param parallelProcessing <tt>true</tt> to use a thread pool, if <tt>false</tt> then work is done in the 096 * calling thread. 097 * 098 * @return the builder 099 */ 100 public MulticastDefinition parallelProcessing(boolean parallelProcessing) { 101 setParallelProcessing(parallelProcessing); 102 return this; 103 } 104 105 /** 106 * Setting the executor for executing the multicasting action. 107 * 108 * @return the builder 109 */ 110 public MulticastDefinition executor(Executor executor) { 111 setExecutor(executor); 112 return this; 113 } 114 115 protected Processor createCompositeProcessor(RouteContext routeContext, List<Processor> list) { 116 if (aggregationStrategy == null && strategyRef != null) { 117 aggregationStrategy = routeContext.lookup(strategyRef, AggregationStrategy.class); 118 } 119 if (aggregationStrategy == null) { 120 aggregationStrategy = new UseLatestAggregationStrategy(); 121 } 122 if (threadPoolRef != null) { 123 executor = routeContext.lookup(threadPoolRef, Executor.class); 124 } 125 return new MulticastProcessor(list, aggregationStrategy, isParallelProcessing(), executor); 126 } 127 128 public AggregationStrategy getAggregationStrategy() { 129 return aggregationStrategy; 130 } 131 132 public MulticastDefinition setAggregationStrategy(AggregationStrategy aggregationStrategy) { 133 this.aggregationStrategy = aggregationStrategy; 134 return this; 135 } 136 137 public boolean isParallelProcessing() { 138 return parallelProcessing != null ? parallelProcessing : false; 139 } 140 141 public void setParallelProcessing(boolean parallelProcessing) { 142 this.parallelProcessing = parallelProcessing; 143 } 144 145 public Executor getExecutor() { 146 return executor; 147 } 148 149 public void setExecutor(Executor executor) { 150 this.executor = executor; 151 } 152 153 @Override 154 protected Processor wrapProcessorInInterceptors(RouteContext routeContext, Processor target) throws Exception { 155 //CAMEL-1193 now we need to wrap the multicast processor with the interceptors 156 //Current we wrap the StreamCachingInterceptor by default 157 return super.wrapProcessorInInterceptors(routeContext, new StreamCachingInterceptor(target)); 158 } 159 }