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.queue;
018
019 import java.util.HashMap;
020 import java.util.concurrent.BlockingQueue;
021 import java.util.concurrent.LinkedBlockingQueue;
022
023 import org.apache.camel.CamelContext;
024 import org.apache.camel.Component;
025
026 /**
027 * Represents the component that manages {@link QueueEndpoint}. It holds the
028 * list of named queues that queue endpoints reference.
029 *
030 * @org.apache.xbean.XBean
031 * @version $Revision: 519973 $
032 */
033 public class QueueComponent<E> implements Component<E> {
034
035 private HashMap<String, BlockingQueue<E>> registry = new HashMap<String, BlockingQueue<E>>();
036 private CamelContext container;
037
038 public void setContext(CamelContext container) {
039 this.container = container;
040 }
041
042 synchronized public BlockingQueue<E> getOrCreateQueue(String uri) {
043 BlockingQueue<E> queue = registry.get(uri);
044 if( queue == null ) {
045 queue = createQueue();
046 registry.put(uri, queue);
047 }
048 return queue;
049 }
050
051 protected BlockingQueue<E> createQueue() {
052 return new LinkedBlockingQueue<E>();
053 }
054
055 public CamelContext getContainer() {
056 return container;
057 }
058
059
060 }