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: 630591 $
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 }