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.impl;
018    
019    import java.util.List;
020    
021    import org.apache.camel.Consumer;
022    import org.apache.camel.Endpoint;
023    import org.apache.camel.Navigate;
024    import org.apache.camel.Processor;
025    import org.apache.camel.Service;
026    
027    /**
028     * A {@link DefaultRoute} which starts with an
029     * <a href="http://camel.apache.org/event-driven-consumer.html">Event Driven Consumer</a>
030     *
031     * @version $Revision: 769303 $
032     */
033    public class EventDrivenConsumerRoute extends DefaultRoute {
034        private final Processor processor;
035    
036        public EventDrivenConsumerRoute(Endpoint endpoint, Processor processor) {
037            super(endpoint);
038            this.processor = processor;
039        }
040    
041        @Override
042        public String toString() {
043            return "EventDrivenConsumerRoute[" + getEndpoint() + " -> " + processor + "]";
044        }
045    
046        public Processor getProcessor() {
047            return processor;
048        }
049    
050        /**
051         * Factory method to lazily create the complete list of services required for this route
052         * such as adding the processor or consumer
053         */
054        @Override
055        protected void addServices(List<Service> services) throws Exception {
056            Endpoint endpoint = getEndpoint();
057            Consumer consumer = endpoint.createConsumer(processor);
058            if (consumer != null) {
059                services.add(consumer);
060            }
061            Processor processor = getProcessor();
062            if (processor instanceof Service) {
063                services.add((Service)processor);
064            }
065        }
066    
067        @SuppressWarnings("unchecked")
068        public Navigate<Processor> navigate() {
069            if (processor instanceof Navigate) {
070                return (Navigate) processor;
071            }
072            return null;
073        }
074    }