001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.processor; 019 020 import org.apache.camel.Processor; 021 import org.apache.camel.Exchange; 022 import org.apache.camel.impl.ServiceSupport; 023 import org.apache.camel.util.ServiceHelper; 024 025 import java.util.Collection; 026 027 /** 028 * Represents a composite pattern, aggregating a collection of processors together as a single processor 029 * 030 * @version $Revision: 534145 $ 031 */ 032 public class CompositeProcessor extends ServiceSupport implements Processor { 033 private final Collection<Processor> processors; 034 035 public CompositeProcessor(Collection<Processor> processors) { 036 this.processors = processors; 037 } 038 039 public void process(Exchange exchange) throws Exception { 040 for (Processor processor : processors) { 041 processor.process(exchange); 042 } 043 } 044 045 @Override 046 public String toString() { 047 StringBuilder builder = new StringBuilder("[ "); 048 boolean first = true; 049 for (Processor processor : processors) { 050 if (first) { 051 first = false; 052 } 053 else { 054 builder.append(", "); 055 } 056 builder.append(processor.toString()); 057 } 058 builder.append(" ]"); 059 return builder.toString(); 060 } 061 062 public Collection<Processor> getProcessors() { 063 return processors; 064 } 065 066 protected void doStart() throws Exception { 067 ServiceHelper.startServices(processors); 068 } 069 070 protected void doStop() throws Exception { 071 ServiceHelper.stopServices(processors); 072 } 073 }