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package javax.jms;
/** A <CODE>QueueSession</CODE> object provides methods for creating
* <CODE>QueueReceiver</CODE>, <CODE>QueueSender</CODE>,
* <CODE>QueueBrowser</CODE>, and <CODE>TemporaryQueue</CODE> objects.
*
* <P>If there are messages that have been received but not acknowledged
* when a <CODE>QueueSession</CODE> terminates, these messages will be retained
* and redelivered when a consumer next accesses the queue.
*
*<P>A <CODE>QueueSession</CODE> is used for creating Point-to-Point specific
* objects. In general, use the <CODE>Session</CODE> object.
* The <CODE>QueueSession</CODE> is used to support
* existing code. Using the <CODE>Session</CODE> object simplifies the
* programming model, and allows transactions to be used across the two
* messaging domains.
*
* <P>A <CODE>QueueSession</CODE> cannot be used to create objects specific to the
* publish/subscribe domain. The following methods inherit from
* <CODE>Session</CODE>, but must throw an
* <CODE>IllegalStateException</CODE>
* if they are used from <CODE>QueueSession</CODE>:
*<UL>
* <LI><CODE>createDurableSubscriber</CODE>
* <LI><CODE>createTemporaryTopic</CODE>
* <LI><CODE>createTopic</CODE>
* <LI><CODE>unsubscribe</CODE>
* </UL>
*
* @version 1.1 - April 2, 2002
* @author Mark Hapner
* @author Rich Burridge
* @author Kate Stout
*
* @see javax.jms.Session
* @see javax.jms.QueueConnection#createQueueSession(boolean, int)
* @see javax.jms.XAQueueSession#getQueueSession()
*/
public interface QueueSession extends Session {
/** Creates a queue identity given a <CODE>Queue</CODE> name.
*
* <P>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.
*
* <P>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 JMS API. The one exception is the
* creation of temporary queues, which is accomplished with the
* <CODE>createTemporaryQueue</CODE> method.
*
* @param queueName the name of this <CODE>Queue</CODE>
*
* @return a <CODE>Queue</CODE> with the given name
*
* @exception JMSException if the session fails to create a queue
* due to some internal error.
*/
Queue
createQueue(String queueName) throws JMSException;
/** Creates a <CODE>QueueReceiver</CODE> object to receive messages from the
* specified queue.
*
* @param queue the <CODE>Queue</CODE> to access
*
* @exception JMSException if the session fails to create a receiver
* due to some internal error.
* @exception InvalidDestinationException if an invalid queue is specified.
*/
QueueReceiver
createReceiver(Queue queue) throws JMSException;
/** Creates a <CODE>QueueReceiver</CODE> object to receive messages from the
* specified queue using a message selector.
*
* @param queue the <CODE>Queue</CODE> 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.
*
* @exception JMSException if the session fails to create a receiver
* due to some internal error.
* @exception InvalidDestinationException if an invalid queue is specified.
* @exception InvalidSelectorException if the message selector is invalid.
*
*/
QueueReceiver
createReceiver(Queue queue,
String messageSelector) throws JMSException;
/** Creates a <CODE>QueueSender</CODE> object to send messages to the
* specified queue.
*
* @param queue the <CODE>Queue</CODE> to access, or null if this is an
* unidentified producer
*
* @exception JMSException if the session fails to create a sender
* due to some internal error.
* @exception InvalidDestinationException if an invalid queue is specified.
*/
QueueSender
createSender(Queue queue) throws JMSException;
/** Creates a <CODE>QueueBrowser</CODE> object to peek at the messages on
* the specified queue.
*
* @param queue the <CODE>Queue</CODE> to access
*
* @exception JMSException if the session fails to create a browser
* due to some internal error.
* @exception InvalidDestinationException if an invalid queue is specified.
*/
QueueBrowser
createBrowser(Queue queue) throws JMSException;
/** Creates a <CODE>QueueBrowser</CODE> object to peek at the messages on
* the specified queue using a message selector.
*
* @param queue the <CODE>Queue</CODE> 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.
*
* @exception JMSException if the session fails to create a browser
* due to some internal error.
* @exception InvalidDestinationException if an invalid queue is specified.
* @exception InvalidSelectorException if the message selector is invalid.
*/
QueueBrowser
createBrowser(Queue queue,
String messageSelector) throws JMSException;
/** Creates a <CODE>TemporaryQueue</CODE> object. Its lifetime will be that
* of the <CODE>QueueConnection</CODE> unless it is deleted earlier.
*
* @return a temporary queue identity
*
* @exception JMSException if the session fails to create a temporary queue
* due to some internal error.
*/
TemporaryQueue
createTemporaryQueue() throws JMSException;
}
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