/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */


package javax.jms;

/** A <CODE>QueueConnection</CODE> object is an active connection to a 
  * point-to-point JMS provider. A client uses a <CODE>QueueConnection</CODE> 
  * object to create one or more <CODE>QueueSession</CODE> objects
  * for producing and consuming messages.
  *
  *<P>A <CODE>QueueConnection</CODE> can be used to create a
  * <CODE>QueueSession</CODE>, from which specialized  queue-related objects
  * can be created.
  * A more general, and recommended, approach is to use the 
  * <CODE>Connection</CODE> object.
  * 
  *
  * <P>The <CODE>QueueConnection</CODE> object
  * should be used to support existing code that has already used it.
  *
  * <P>A <CODE>QueueConnection</CODE> cannot be used to create objects 
  * specific to the   publish/subscribe domain. The
  * <CODE>createDurableConnectionConsumer</CODE> method inherits
  * from  <CODE>Connection</CODE>, but must throw an 
  * <CODE>IllegalStateException</CODE>
  * if used from <CODE>QueueConnection</CODE>.
  *
  * @version     1.1 - April 9, 2002
  * @author      Mark Hapner
  * @author      Rich Burridge
  * @author      Kate Stout
  *
  * @see         javax.jms.Connection
  * @see         javax.jms.ConnectionFactory
  * @see	 javax.jms.QueueConnectionFactory
  */

public interface QueueConnection extends Connection {

    /** Creates a <CODE>QueueSession</CODE> object.
      *  
      * @param transacted indicates whether the session is transacted
      * @param acknowledgeMode indicates whether the consumer or the
      * client will acknowledge any messages it receives; ignored if the session
      * is transacted. Legal values are <code>Session.AUTO_ACKNOWLEDGE</code>, 
      * <code>Session.CLIENT_ACKNOWLEDGE</code>, and 
      * <code>Session.DUPS_OK_ACKNOWLEDGE</code>.
      *  
      * @return a newly created queue session
      *  
      * @exception JMSException if the <CODE>QueueConnection</CODE> object fails
      *                         to create a session due to some internal error or
      *                         lack of support for the specific transaction
      *                         and acknowledgement mode.
      *
      * @see Session#AUTO_ACKNOWLEDGE 
      * @see Session#CLIENT_ACKNOWLEDGE 
      * @see Session#DUPS_OK_ACKNOWLEDGE 
      */ 

    QueueSession
    createQueueSession(boolean transacted,
                       int acknowledgeMode) throws JMSException;


    /** Creates a connection consumer for this connection (optional operation).
      * This is an expert facility not used by regular JMS clients.
      *
      * @param queue the queue to access
      * @param messageSelector only messages with properties matching the
      * message selector expression are delivered. A value of null or
      * an empty string indicates that there is no message selector 
      * for the message consumer.
      * @param sessionPool the server session pool to associate with this 
      * connection consumer
      * @param maxMessages the maximum number of messages that can be
      * assigned to a server session at one time
      *
      * @return the connection consumer
      *  
      * @exception JMSException if the <CODE>QueueConnection</CODE> object fails
      *                         to create a connection consumer due to some
      *                         internal error or invalid arguments for 
      *                         <CODE>sessionPool</CODE> and 
      *                         <CODE>messageSelector</CODE>.
      * @exception InvalidDestinationException if an invalid queue is specified.
      * @exception InvalidSelectorException if the message selector is invalid.
      * @see javax.jms.ConnectionConsumer
      */ 

    ConnectionConsumer
    createConnectionConsumer(Queue queue,
                             String messageSelector,
                             ServerSessionPool sessionPool,
			     int maxMessages)
			   throws JMSException;
}
