Websphere 4.0.2 and EJB 2.0

[JeanLouis Marechaux]

Hi all,
Where can I find documents about EJB 2.0 stuffs in WAS 4 ?
For instance, a documented link about the CMP model, the EJBQL etc..

Kyle, I know you've written something about it, but I'm not able to to find it this morning (maybe I need a cup of cofee).
TIA

[Martin Amaris]

Look! there is a book at www.theserverside.com about EJB2.0. It's a great book. It does not specifically reference WAS 4.0 or any WAS but it does reference EJBQL among other things. Its name is "Mastering EJB".
Give it a look!
Martin Amaris

[JeanLouis Marechaux]

Thanks a lot Martin,
but the real question is about WebSphere, not EJB 2.0.
Actually, WebSphere 4 does not support the entire EJB 2.0 spec but only some specific stuffs (CMR, EJBQL...).
I know (well, I try) the EJB 2.0 spec, and what I am looking for is the specific implementation the WebSphere team has done.

Anyway, thanks for your post. And I confirm Mastering EJB II is a great book.

[Kyle Brown]

Bill,
We don't support hardly any of the EJB 2.0 specification in WebSphere 4.0. That support is coming in WebSphere 5.0.
The only things we support are:
(a) Something almost but not entirely unlike Message-Driven Beans (look here for the documentation on the "Extended messaging support" in WAS 4.0 EE).
(b) A semi-compliant technology demonstration of EJB-QL. That is only described (I believe) in the documentation set of WSAD.
We have EJB relationships, but they're not in line with the EJB 2.0 spec. For more information see here
and here .
[ February 14, 2002: Message edited by: Kyle Brown ]

[JeanLouis Marechaux]

Thanks a lot for these links Kyle.
I've guessed the author would be able to find his articles
(b) A semi-compliant technology demonstration of EJB-QL
semi-compliant...hum, interesting... I can't find any documentation about it !! I mean I can't find what is missing in IBM implementation of the EJB QL....
If someone has an idea....
We have EJB relationships, but they're not in line with the EJB 2.0 spec
I've seen the IBM implementation is different from the Sun's spec, but it seems to me it allows the same functionalities
Am I right or did I miss some features not available within WAS-CMP model ?
[ February 14, 2002: Message edited by: Bill Bailey ]

[Jacqueline Qin]

For the EJB QL part, you can find it in InfoCenter under
"6.6.0.15.5: Implementing custom finder helpers for CMP entity beans". It shows some examples of using EJB query language. I couldn't get it to work though so I used Where Clause instead. Anyway, these methods are not really EJB 2.0-specific and I am not sure if it will be provided for in future version of WebSphere