Module jakarta.messaging

Package jakarta.jms

Interface QueueSession

All Superinterfaces:

AutoCloseable, Runnable, Session

public interface QueueSession
extends Session

A QueueSession object provides methods for creating QueueReceiver, QueueSender, QueueBrowser, and TemporaryQueue objects.

If there are messages that have been received but not acknowledged when a QueueSession terminates, these messages will be retained and redelivered when a consumer next accesses the queue.

A QueueSession is used for creating Point-to-Point specific objects. In general, use the Session object. The QueueSession is used to support existing code. Using the Session object simplifies the programming model, and allows transactions to be used across the two messaging domains.

A QueueSession cannot be used to create objects specific to the publish/subscribe domain. The following methods inherit from Session, but must throw an IllegalStateException if they are used from QueueSession:

• createDurableSubscriber
• createDurableConsumer
• createSharedConsumer
• createSharedDurableConsumer
• createTemporaryTopic
• createTopic
• unsubscribe

Since:

JMS 1.0

Version:

Jakarta Messaging 2.0

See Also:

• Session
• QueueConnection.createQueueSession(boolean, int)
• XAQueueSession.getQueueSession()

Field Summary

Fields inherited from interface jakarta.jms.Session

AUTO_ACKNOWLEDGE, CLIENT_ACKNOWLEDGE, DUPS_OK_ACKNOWLEDGE, SESSION_TRANSACTED

Method Summary

Modifier and Type	Method	Description
QueueBrowser	createBrowser(Queue queue)	Creates a QueueBrowser object to peek at the messages on the specified queue.
QueueBrowser	createBrowser(Queue queue, String messageSelector)	Creates a QueueBrowser object to peek at the messages on the specified queue using a message selector.
Queue	createQueue(String queueName)	Creates a queue identity given a Queue name.
QueueReceiver	createReceiver(Queue queue)	Creates a QueueReceiver object to receive messages from the specified queue.
QueueReceiver	createReceiver(Queue queue, String messageSelector)	Creates a QueueReceiver object to receive messages from the specified queue using a message selector.
QueueSender	createSender(Queue queue)	Creates a QueueSender object to send messages to the specified queue.
TemporaryQueue	createTemporaryQueue()	Creates a TemporaryQueue object.

Methods inherited from interface jakarta.jms.Session

close, commit, createBytesMessage, createConsumer, createConsumer, createConsumer, createDurableConsumer, createDurableConsumer, createDurableSubscriber, createDurableSubscriber, createMapMessage, createMessage, createObjectMessage, createObjectMessage, createProducer, createSharedConsumer, createSharedConsumer, createSharedDurableConsumer, createSharedDurableConsumer, createStreamMessage, createTemporaryTopic, createTextMessage, createTextMessage, createTopic, getAcknowledgeMode, getMessageListener, getTransacted, recover, rollback, run, setMessageListener, unsubscribe

Method Details

createQueue

Queue createQueue(String queueName)
           throws JMSException

Creates a queue identity given a Queue name.

This facility is provided for the rare cases where clients need to dynamically manipulate queue identity. It allows the creation of a queue identity with a provider-specific name. Clients that depend on this ability are not portable.

Note that this method is not for creating the physical queue. The physical creation of queues is an administrative task and is not to be initiated by the Jakarta Messaging API. The one exception is the creation of temporary queues, which is accomplished with the createTemporaryQueue method.

Specified by:

createQueue in interface Session

Parameters:

queueName - the name of this Queue

Returns:

a Queue with the given name

Throws:

JMSException - if the session fails to create a queue due to some internal error.

createReceiver

QueueReceiver createReceiver(Queue queue)
                      throws JMSException

Creates a QueueReceiver object to receive messages from the specified queue.

Parameters:

queue - the Queue to access

Returns:

A QueueReceiver object to receive messages from the specified queue

Throws:

JMSException - if the session fails to create a receiver due to some internal error.

InvalidDestinationException - if an invalid queue is specified.

createReceiver

QueueReceiver createReceiver(Queue queue,
 String messageSelector)
                      throws JMSException

Creates a QueueReceiver object to receive messages from the specified queue using a message selector.

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.

Returns:

A QueueReceiver object to receive messages from the specified queue

Throws:

JMSException - if the session fails to create a receiver due to some internal error.

InvalidDestinationException - if an invalid queue is specified.

InvalidSelectorException - if the message selector is invalid.

createSender

QueueSender createSender(Queue queue)
                  throws JMSException

Creates a QueueSender object to send messages to the specified queue.

Parameters:

queue - the Queue to access, or null if this is an unidentified producer

Returns:

A QueueSender object to send messages to the specified queue.

Throws:

JMSException - if the session fails to create a sender due to some internal error.

InvalidDestinationException - if an invalid queue is specified.

createBrowser

QueueBrowser createBrowser(Queue queue)
                    throws JMSException

Creates a QueueBrowser object to peek at the messages on the specified queue.

Specified by:

createBrowser in interface Session

Parameters:

queue - the Queue to access

Returns:

A QueueBrowser object to peek at the messages.

Throws:

JMSException - if the session fails to create a browser due to some internal error.

InvalidDestinationException - if an invalid queue is specified.

createBrowser

QueueBrowser createBrowser(Queue queue,
 String messageSelector)
                    throws JMSException

Creates a QueueBrowser object to peek at the messages on the specified queue using a message selector.

Specified by:

createBrowser in interface Session

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.

Returns:

A QueueBrowser object to peek at the messages on the specified queue.

Throws:

JMSException - if the session fails to create a browser due to some internal error.

InvalidDestinationException - if an invalid queue is specified.

InvalidSelectorException - if the message selector is invalid.

createTemporaryQueue

TemporaryQueue createTemporaryQueue()
                             throws JMSException

Creates a TemporaryQueue object. Its lifetime will be that of the QueueConnection unless it is deleted earlier.

Specified by:

createTemporaryQueue in interface Session

Returns:

a temporary queue identity

Throws:

JMSException - if the session fails to create a temporary queue due to some internal error.