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.impl.ServiceSupport;
022    import org.apache.camel.util.ServiceHelper;
023    
024    /**
025     * @version $Revision: 519941 $
026     */
027    public class InterceptorProcessor<E> extends ServiceSupport implements Processor<E> {
028        protected Processor<E> next;
029    
030        public InterceptorProcessor() {
031        }
032    
033        public void process(E exchange) {
034            if (next != null) {
035                next.process(exchange);
036            }
037        }
038    
039        @Override
040        public String toString() {
041            return "intercept(" + next + ")";
042        }
043    
044        public Processor<E> getNext() {
045            return next;
046        }
047    
048        public void setNext(Processor<E> next) {
049            this.next = next;
050        }
051    
052        protected void doStart() throws Exception {
053            ServiceHelper.startServices(next);
054        }
055    
056        protected void doStop() throws Exception {
057            ServiceHelper.stopServices(next);
058        }
059    }