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.component.seda;
018    
019    import java.util.concurrent.BlockingQueue;
020    
021    import org.apache.camel.Component;
022    import org.apache.camel.Consumer;
023    import org.apache.camel.Exchange;
024    import org.apache.camel.Processor;
025    import org.apache.camel.Producer;
026    import org.apache.camel.impl.DefaultEndpoint;
027    import org.apache.camel.impl.DefaultExchange;
028    import org.apache.camel.impl.DefaultProducer;
029    
030    /**
031     * An implementation of the <a
032     * href="http://activemq.apache.org/camel/queue.html">Queue components</a> for
033     * asynchronous SEDA exchanges on a {@link BlockingQueue} within a CamelContext
034     * 
035     * @org.apache.xbean.XBean
036     * @version $Revision: 519973 $
037     */
038    public class SedaEndpoint<E extends Exchange> extends DefaultEndpoint<E> {
039        private BlockingQueue<E> queue;
040    
041        public SedaEndpoint(String endpointUri, Component component, BlockingQueue<E> queue) {
042            super(endpointUri, component);
043            this.queue = queue;
044        }
045    
046        public SedaEndpoint(String uri, SedaComponent<E> component) {
047            this(uri, component, component.createQueue());
048        }
049    
050        public Producer<E> createProducer() throws Exception {
051            return new DefaultProducer(this) {
052                public void process(Exchange exchange) {
053                    queue.add(toExchangeType(exchange));
054                }
055            };
056        }
057    
058        public Consumer<E> createConsumer(Processor processor) throws Exception {
059            return new SedaConsumer<E>(this, processor);
060        }
061    
062        public E createExchange() {
063            // How can we create a specific Exchange if we are generic??
064            // perhaps it would be better if we did not implement this.
065            return (E)new DefaultExchange(getContext());
066        }
067    
068        public BlockingQueue<E> getQueue() {
069            return queue;
070        }
071    
072        public boolean isSingleton() {
073            return true;
074        }
075    
076    }