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.Exchange;
024    import org.apache.camel.Processor;
025    import org.apache.camel.Route;
026    import org.apache.camel.Service;
027    
028    /**
029     * A {@link Route} which starts with an
030     * <a href="http://activemq.apache.org/camel/event-driven-consumer.html">Event Driven Consumer</a>
031     *
032     * @version $Revision: 53280 $
033     */
034    public class EventDrivenConsumerRoute<E extends Exchange> extends Route<E> {
035        private Processor processor;
036    
037        public EventDrivenConsumerRoute(Endpoint endpoint, Processor processor) {
038            super(endpoint);
039            this.processor = processor;
040        }
041    
042        @Override
043        public String toString() {
044            return "EventDrivenConsumerRoute[" + getEndpoint() + " -> " + processor + "]";
045        }
046    
047        public Processor getProcessor() {
048            return processor;
049        }
050    
051        public void setProcessor(Processor processor) {
052            this.processor = processor;
053        }
054    
055        /**
056         * Factory method to lazily create the complete list of services required for this route
057         * such as adding the processor or consumer
058         */
059        @Override
060        protected void addServices(List<Service> services) throws Exception {
061            Endpoint<E> endpoint = getEndpoint();
062            Consumer<E> consumer = endpoint.createConsumer(processor);
063            if (consumer != null) {
064                services.add(consumer);
065            }
066            Processor processor = getProcessor();
067            if (processor instanceof Service) {
068                services.add((Service)processor);
069            }
070        }
071    }