MQSeries.net :: View topic

jeevan · Posted: Sun Feb 03, 2008 5:03 pm Post subject:

I am planning to learn jms( I am administrator basically, however I know java). From reading the jms tutorials, I understand the follwing

there needs to be
a jms client for putting messages ( producing message)
a jms client getting message ( messaage consumer)

a jms client puts a messaage directly ( not sure whether it uses jndi lookup) into queue manager however, the jms client does not access a message directly from the queue. An MDB get the message from the queue ( which is listeneing to a queue).

I could not figureout exactly:

if the above statement is correct, how a mdb passes the message t jsm client

what is a listener ( when we call a mdb is listening, what exactly does it mean)

what is restarting a listener( I know from mq point of view, i can see the input process in a queue and if there is none, I can tell the application folks to restart it). But from technical point of view, is it just an instalce of mdb app r?

How can i set a listener? What is jms listener in general and how a listener for a queue differs?

Some clarificaiton would be reallly appreciated.