org.codehaus.activemq
Class ActiveMQQueueReceiver
java.lang.Object
org.codehaus.activemq.ActiveMQMessageConsumer
org.codehaus.activemq.ActiveMQQueueReceiver
- All Implemented Interfaces:
- Closeable, MessageConsumer, QueueReceiver, StatsCapable
- public class ActiveMQQueueReceiver
- extends ActiveMQMessageConsumer
- implements QueueReceiver
A client uses a QueueReceiver
object to receive messages that
have been delivered to a queue.
Although it is possible to have multiple QueueReceiver
s for
the same queue, the JMS API does not define how messages are distributed
between the QueueReceiver
s.
If a QueueReceiver
specifies a message selector, the messages
that are not selected remain on the queue. By definition, a message selector
allows a QueueReceiver
to skip messages. This means that when
the skipped messages are eventually read, the total ordering of the reads
does not retain the partial order defined by each message producer. Only
QueueReceiver
s without a message selector will read messages
in message producer order.
Creating a MessageConsumer
provides the same features as
creating a QueueReceiver
. A MessageConsumer
object is recommended for creating new code. The QueueReceiver
is provided to support existing code.
- See Also:
Session.createConsumer(javax.jms.Destination, String)
,
Session.createConsumer(javax.jms.Destination)
,
QueueSession.createReceiver(Queue, String)
,
QueueSession.createReceiver(Queue)
,
MessageConsumer
Fields inherited from class org.codehaus.activemq.ActiveMQMessageConsumer |
browser, consumerId, consumerName, consumerNumber, destination, messageQueue, messageSelector, noLocal, prefetchNumber, session, startTime |
Method Summary |
Queue |
getQueue()
Gets the Queue associated with this queue receiver. |
Methods inherited from class org.codehaus.activemq.ActiveMQMessageConsumer |
checkClosed, clearMessagesInProgress, close, getConsumerId, getConsumerName, getConsumerNumber, getConsumerStats, getDestination, getLocalMemoryUsage, getMessageListener, getMessageSelector, getPrefetchNumber, getStartTime, getStats, isBrowser, isDurableSubscriber, isNoLocal, processMessage, receive, receive, receiveNoWait, setBrowser, setConsumerId, setConsumerName, setConsumerNumber, setMessageListener, setPrefetchNumber, size, toString |
ActiveMQQueueReceiver
protected ActiveMQQueueReceiver(ActiveMQSession theSession,
ActiveMQDestination dest,
String selector,
int cnum,
int prefetch)
throws JMSException
- Parameters:
theSession
- dest
- selector
- cnum
- prefetch
-
- Throws:
JMSException
getQueue
public Queue getQueue()
throws JMSException
- Gets the
Queue
associated with this queue receiver.
- Specified by:
getQueue
in interface QueueReceiver
- Returns:
- this receiver's
Queue
- Throws:
JMSException
- if the JMS provider fails to get the queue for this queue
receiver due to some internal error.
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