| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.component.jms; |
| |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.QueueBrowser; |
| import javax.jms.Session; |
| |
| import org.apache.camel.Exchange; |
| import org.springframework.jms.core.BrowserCallback; |
| import org.springframework.jms.core.JmsOperations; |
| |
| /** |
| * A default implementation of queue browsing using the Spring {@link BrowserCallback} |
| * |
| * @version |
| */ |
| public class DefaultQueueBrowseStrategy implements QueueBrowseStrategy { |
| |
| public List<Exchange> browse(JmsOperations template, String queue, final JmsQueueEndpoint endpoint) { |
| return template.browse(queue, new BrowserCallback<List<Exchange>>() { |
| public List<Exchange> doInJms(Session session, QueueBrowser browser) throws JMSException { |
| // not the best implementation in the world as we have to browse |
| // the entire queue, which could be massive |
| List<Exchange> answer = new ArrayList<Exchange>(); |
| Enumeration iter = browser.getEnumeration(); |
| while (iter.hasMoreElements()) { |
| Message message = (Message) iter.nextElement(); |
| Exchange exchange = endpoint.createExchange(message); |
| answer.add(exchange); |
| } |
| return answer; |
| } |
| }); |
| } |
| } |