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