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 }