RC9/qpid/java/broker/src/main/java/org/apache/qpid/server/queue/AMQQueueFactory.java

/*
 *
 * 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
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 * KIND, either express or implied.  See the License for the
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package org.apache.qpid.server.queue;

import org.apache.commons.configuration.Configuration;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.server.configuration.VirtualHostConfiguration;
import org.apache.qpid.server.virtualhost.VirtualHost;
import org.apache.qpid.AMQException;


public class AMQQueueFactory
{
    public static final AMQShortString X_QPID_PRIORITIES = new AMQShortString("x-qpid-priorities");

    public static AMQQueue createAMQQueueImpl(AMQShortString name,
            boolean durable,
            AMQShortString owner,
            boolean autoDelete,
            VirtualHost virtualHost, final FieldTable arguments) 

    throws AMQException
    {

        return createAMQQueueImpl(name, durable, owner, autoDelete, 
                virtualHost, arguments, 
                VirtualHostConfiguration.getDefaultQueueConfiguration(virtualHost));
    }
    
    public static AMQQueue createAMQQueueImpl(AMQShortString name,
                                              boolean durable,
                                              AMQShortString owner,
                                              boolean autoDelete,
                                              VirtualHost virtualHost, final FieldTable arguments, 
                                              Configuration queueConfiguration)
            throws AMQException
    {

        final int priorities = arguments == null ? 1 : arguments.containsKey(X_QPID_PRIORITIES) ? arguments.getInteger(X_QPID_PRIORITIES) : 1;

        AMQQueue q = null;
        if(priorities > 1)
        {
            q = new AMQPriorityQueue(name, durable, owner, autoDelete, virtualHost, priorities);
        }
        else
        {
            q = new SimpleAMQQueue(name, durable, owner, autoDelete, virtualHost);
        }
        if (q != null && queueConfiguration != null)
        {
            q.configure(queueConfiguration);
        }

        //Register the new queue
        virtualHost.getQueueRegistry().registerQueue(q);
        return q;
    }
}