/**
* 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 2.5.x {@link BrowserCallback}
* @version $Revision: 788923 $
*/
public class DefaultQueueBrowseStrategy implements QueueBrowseStrategy {
public List<Exchange> browse(JmsOperations template, String queue, final JmsQueueEndpoint endpoint) {
return (List<Exchange>) template.browse(queue, new BrowserCallback() {
public Object doInJms(Session session, QueueBrowser browser) throws JMSException {
// TODO 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;
}
});
}
}