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.processor; 018 019 import java.util.Collection; 020 021 import org.apache.camel.Exchange; 022 import org.apache.camel.Processor; 023 import org.apache.camel.impl.ServiceSupport; 024 import org.apache.camel.util.ServiceHelper; 025 026 /** 027 * Represents a composite pattern, aggregating a collection of processors 028 * together as a single processor 029 * 030 * @version $Revision: 303 $ 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 } else { 053 builder.append(", "); 054 } 055 builder.append(processor.toString()); 056 } 057 builder.append(" ]"); 058 return builder.toString(); 059 } 060 061 public Collection<Processor> getProcessors() { 062 return processors; 063 } 064 065 protected void doStart() throws Exception { 066 ServiceHelper.startServices(processors); 067 } 068 069 protected void doStop() throws Exception { 070 ServiceHelper.stopServices(processors); 071 } 072 }