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 }