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oracle.jms
Class AQjmsQueueBrowser

java.lang.Object
oracle.jms.AQjmsObject
oracle.jms.AQjmsQueueBrowser

All Implemented Interfaces:

java.util.Enumeration, QueueBrowser

public class AQjmsQueueBrowser

extends oracle.jms.AQjmsObject

implements QueueBrowser, java.util.Enumeration

This is an Oracle class which implements javax.jms.QueueBrowser and java.util.Enumeration.

Method Summary

void	close() Closes the QueueBrowser.
java.util.Enumeration	getEnumeration() Gets an enumeration for browsing the current queue messages in the order they would be received.
java.lang.String	getMessageSelector() Gets this queue browser's message selector expression.
Queue	getQueue() Gets the queue associated with this queue browser.
java.lang.String	getTransformation() Gets this browser's transformation.
boolean	hasMoreElements() Tests if this enumeration contains more elements.
java.lang.Object	nextElement() Returns the next element of this enumeration.
void	purgeSeen() Purges messages seen so far during browse.
void	setTransformation(java.lang.String transformation) Sets this browser's transformation.

Methods inherited from class oracle.jms.AQjmsObject

checkClosed, children, finalize, getID, getParent, isOpen, localClose, preClose

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

close

public void close()
           throws JMSException

Description copied from interface: QueueBrowser

Closes the QueueBrowser.

Since a provider may allocate some resources on behalf of a QueueBrowser outside the Java virtual machine, clients should close them when they are not needed. Relying on garbage collection to eventually reclaim these resources may not be timely enough.

Specified by:

close in interface QueueBrowser

Overrides:

close in class oracle.jms.AQjmsObject

Throws:

JMSException - if the JMS provider fails to close this browser due to some internal error.

getQueue

public Queue getQueue()
               throws JMSException

Gets the queue associated with this queue browser.

Specified by:

getQueue in interface QueueBrowser

Returns:

the queue

Throws:

JMSException - if the queue is not retrieved due to some error.

getEnumeration

public java.util.Enumeration getEnumeration()
                                     throws JMSException

Gets an enumeration for browsing the current queue messages in the order they would be received.

Specified by:

getEnumeration in interface QueueBrowser

Returns:

an enumeration for browsing the messages

Throws:

JMSException - if the enumeration is not retrieved due to some error.

getMessageSelector

public java.lang.String getMessageSelector()
                                    throws JMSException

Gets this queue browser's message selector expression.

Specified by:

getMessageSelector in interface QueueBrowser

Returns:

this queue browser's message selector

Throws:

JMSException - if the message selector is not retrieved due to some error.

nextElement

public java.lang.Object nextElement()
                             throws java.util.NoSuchElementException

Returns the next element of this enumeration.

Specified by:

nextElement in interface java.util.Enumeration

Returns:

the next element of this enumeration

Throws:

java.util.NoSuchElementException - if no more elements exist.

hasMoreElements

public boolean hasMoreElements()

Tests if this enumeration contains more elements.

Specified by:

hasMoreElements in interface java.util.Enumeration

Returns:

true if more elements exist in the enumeration, false otherwise

purgeSeen

public void purgeSeen()
               throws JMSException

Purges messages seen so far during browse. The purge will be finalized only when the session for the queue browse is committed.

Throws:

JMSException - if an error occurs during the purge operation.

setTransformation

public void setTransformation(java.lang.String transformation)

Sets this browser's transformation. This transformation will be applied before the message is returned to the user.

Parameters:

transformation - the transformation to use when getting messages

getTransformation

public java.lang.String getTransformation()

Gets this browser's transformation.

Returns:

the transformation used when getting messages

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