public class TopicRequestor extends java.lang.Object
TopicRequestorhelper class simplifies making service requests.
TopicRequestor constructor is given a non-transacted
TopicSession and a destination
Topic. It creates a
TemporaryTopic for the responses and provides a
request method that sends
the request message and waits for its reply.
This is a very basic request/reply abstraction which assumes the session is non-transacted with a delivery mode of either AUTO_ACKNOWLEDGE or DUPS_OK_ACKNOWLEDGE. It is expected that most applications will create less basic implementations.
|Constructor and Description|
Constructor for the
|Modifier and Type||Method and Description|
Sends a request and waits for a reply.
public TopicRequestor(TopicSession session, Topic topic) throws JMSException
This implementation assumes the session parameter to be non-transacted, with a delivery mode of either
public Message request(Message message) throws JMSException
JMSReplyTodestination; the first reply is returned, and any following replies are discarded.
message- the message to send
JMSException- if the Jakarta Messaging provider fails to complete the request due to some internal error.
public void close() throws JMSException
TopicRequestorand its session.
Since a provider may allocate some resources on behalf of a
TopicRequestor 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.
Note that this method closes the
TopicSession object passed to the
JMSException- if the Jakarta Messaging provider fails to close the
TopicRequestordue to some internal error.