javax.jms
Interface QueueConnection

All Superinterfaces:
Connection
All Known Subinterfaces:
XAQueueConnection
public interface QueueConnection
extends Connection

A QueueConnection object is an active connection to a point-to-point JMS provider. A client uses a QueueConnection object to create one or more QueueSession objects for producing and consuming messages.

A QueueConnection can be used to create a QueueSession, from which specialized queue-related objects can be created. A more general, and recommended, approach is to use the Connection object.

The QueueConnection object should be used to support existing code that has already used it.

A QueueConnection cannot be used to create objects specific to the publish/subscribe domain. The createDurableConnectionConsumer method inherits from Connection, but must throw an IllegalStateException if used from QueueConnection.

Version:
1.1 - April 9, 2002
Author:
Mark Hapner, Rich Burridge, Kate Stout
See Also:
Connection, ConnectionFactory, QueueConnectionFactory

Method Summary
 ConnectionConsumer createConnectionConsumer(Queue queue, String messageSelector, ServerSessionPool sessionPool, int maxMessages)
          Creates a connection consumer for this connection (optional operation).
 QueueSession createQueueSession(boolean transacted, int acknowledgeMode)
          Creates a QueueSession object.
 
Methods inherited from interface javax.jms.Connection
close, createConnectionConsumer, createDurableConnectionConsumer, createSession, getClientID, getExceptionListener, getMetaData, setClientID, setExceptionListener, start, stop
 

Method Detail

createQueueSession

public QueueSession createQueueSession(boolean transacted,
                                       int acknowledgeMode)
                                throws JMSException
Creates a QueueSession object.

Parameters:
transacted - indicates whether the session is transacted
acknowledgeMode - indicates whether the consumer or the client will acknowledge any messages it receives; ignored if the session is transacted. Legal values are Session.AUTO_ACKNOWLEDGE, Session.CLIENT_ACKNOWLEDGE, and Session.DUPS_OK_ACKNOWLEDGE.
Returns:
a newly created queue session
Throws:
JMSException - if the QueueConnection object fails to create a session due to some internal error or lack of support for the specific transaction and acknowledgement mode.
See Also:
Session.AUTO_ACKNOWLEDGE, Session.CLIENT_ACKNOWLEDGE, Session.DUPS_OK_ACKNOWLEDGE

createConnectionConsumer

public ConnectionConsumer createConnectionConsumer(Queue queue,
                                                   String messageSelector,
                                                   ServerSessionPool sessionPool,
                                                   int maxMessages)
                                            throws JMSException
Creates a connection consumer for this connection (optional operation). This is an expert facility not used by regular JMS clients.

Parameters:
queue - the queue to access
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.
sessionPool - the server session pool to associate with this connection consumer
maxMessages - the maximum number of messages that can be assigned to a server session at one time
Returns:
the connection consumer
Throws:
JMSException - if the QueueConnection object fails to create a connection consumer due to some internal error or invalid arguments for sessionPool and messageSelector.
InvalidDestinationException - if an invalid queue is specified.
InvalidSelectorException - if the message selector is invalid.
See Also:
ConnectionConsumer
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