QueueConnection (Java 2 Platform Ent. Ed. v1.4) - Java Platform, Enterprise Edition v1.4 API Specifications

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Java^TM 2 Platform
Ent. Ed. v1.4

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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