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whats the difference

mohd. gulrez khan
Greenhorn

Joined: Nov 23, 2004
Posts: 20
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 ......


Gulrez<br /> <br />SCJP 1.4 , SCWCD 1.4.<br />SCBCD 1.3
wise owen
Ranch Hand

Joined: Feb 02, 2006
Posts: 2023
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
Greenhorn

Joined: Nov 23, 2004
Posts: 20
Thanks Wise .
 
Consider Paul's rocket mass heater.
 
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