whats the difference

[mohd. gulrez khan]

Hi ranchers,

I would like to know the difference between the tag

<resource-env-ref>
(HFEJB says that this can be used only as a JMS destination as of now)

and

<message-driven-destination>

Can someone please help ......

[wise owen]

They have different usages.
Message-Driven Beans and JMS:

Clients do not bind to an MDB like they do for session beans and entity beans. The client only needs to send a JMS message to the queue/topic to which the MDB is configured to listen. Typically clients also use the <resource-ref> and <resource-env-ref> elements of their deployment descriptor and then point to the same JNDI names as the MDB's <connection-factory-name> and <message-driven-destination-name> descriptor elements.

....

In ejb-jar.xml, attaching a JMS resource to an MDB requires the <message-driven-destination> entry in the MDB's declaration.

[mohd. gulrez khan]

Thanks Wise .