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 */
017package org.apache.activemq.console.filter;
018
019import java.io.IOException;
020import java.net.MalformedURLException;
021import java.util.Arrays;
022import java.util.Iterator;
023import java.util.List;
024
025import javax.management.MBeanServerConnection;
026import javax.management.ObjectName;
027import javax.management.openmbean.CompositeData;
028import javax.management.remote.JMXConnector;
029import javax.management.remote.JMXConnectorFactory;
030import javax.management.remote.JMXServiceURL;
031
032public class MessagesQueryFilter extends AbstractQueryFilter {
033
034    private MBeanServerConnection jmxConnection;
035    private ObjectName destName;
036
037    /**
038     * Create a JMS message query filter
039     * 
040     * @param jmxConnection - JMX connection to use
041     * @param destName - object name query to retrieve the destination
042     */
043    public MessagesQueryFilter(MBeanServerConnection jmxConnection, ObjectName destName) {
044        super(null);
045        this.jmxConnection = jmxConnection;
046        this.destName = destName;
047    }
048
049    /**
050     * Queries the specified destination using the message selector format query
051     * 
052     * @param queries - message selector queries
053     * @return list messages that matches the selector
054     * @throws Exception
055     */
056    public List query(List queries) throws Exception {
057        String selector = "";
058
059        // Convert to message selector
060        for (Iterator i = queries.iterator(); i.hasNext();) {
061            selector = selector + "(" + i.next().toString() + ") AND ";
062        }
063
064        // Remove last AND
065        if (!selector.equals("")) {
066            selector = selector.substring(0, selector.length() - 5);
067        }
068
069        return queryMessages(selector);
070    }
071
072    /**
073     * Query the messages of a queue destination using JMX
074     * 
075     * @param selector - message selector
076     * @return list of messages that matches the selector
077     * @throws Exception
078     */
079    protected List queryMessages(String selector) throws Exception {
080        CompositeData[] messages = (CompositeData[]) jmxConnection.invoke(destName, "browse", new Object[] {selector}, new String[] {});
081        return Arrays.asList(messages);
082    }
083
084}