ConnectionConsumer (JBoss J2EE API) - JBoss 4.0.1 sp1 j2ee API Documentation 英文版文档

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javax.jms
Interface ConnectionConsumer

public interface ConnectionConsumer

For application servers, Connection objects provide a special facility for creating a ConnectionConsumer (optional). The messages it is to consume are specified by a Destination and a message selector. In addition, a ConnectionConsumer must be given a ServerSessionPool to use for processing its messages.

Normally, when traffic is light, a ConnectionConsumer gets a ServerSession from its pool, loads it with a single message, and starts it. As traffic picks up, messages can back up. If this happens, a ConnectionConsumer can load each ServerSession with more than one message. This reduces the thread context switches and minimizes resource use at the expense of some serialization of message processing.

See Also:: Connection.createConnectionConsumer(javax.jms.Destination, java.lang.String, javax.jms.ServerSessionPool, int), Connection.createDurableConnectionConsumer(javax.jms.Topic, java.lang.String, java.lang.String, javax.jms.ServerSessionPool, int), QueueConnection.createConnectionConsumer(javax.jms.Queue, java.lang.String, javax.jms.ServerSessionPool, int), TopicConnection.createConnectionConsumer(javax.jms.Topic, java.lang.String, javax.jms.ServerSessionPool, int), TopicConnection.createDurableConnectionConsumer(javax.jms.Topic, java.lang.String, java.lang.String, javax.jms.ServerSessionPool, int)

Method Summary

void close()
Closes the connection consumer.

ServerSessionPool getServerSessionPool()
Gets the server session pool associated with this connection consumer.

Method Detail

getServerSessionPool

public ServerSessionPool getServerSessionPool()
                                       throws JMSException

Gets the server session pool associated with this connection consumer.

Returns:: the server session pool used by this connection consumer
Throws:: JMSException - if the JMS provider fails to get the server session pool associated with this consumer due to some internal error.

close

public void close()
           throws JMSException

Closes the connection consumer.

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

Throws:: JMSException - if the JMS provider fails to release resources on behalf of the connection consumer or fails to close the connection consumer.