EJB 1 to ???

shekar rakju

Greenhorn

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posted 20 years ago

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Hi,
Are you covering from EJB 1.0 to 3.0 in your book.. or are you concentrating olny advanced topics ?
Shekar

Kyle Brown

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posted 20 years ago

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I'm sorry, I can't parse this question. What do you mean EJB 3.0? The EJB spec is only to the 2.1 level even in the JCP... Can you be more specific in your question.
Kyle

Kyle Brown, Author of Persistence in the Enterprise and Enterprise Java Programming with IBM Websphere, 2nd Edition
See my homepage at http://www.kyle-brown.com/ for other WebSphere information.

Nicholas Cheung

Ranch Hand

Posts: 4982

posted 20 years ago

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Hi Shekar,
The latest EJB specification is version 2.1.
For the book, I think the version of EJB is 2.0 or 2.1 as WebSphere is now support EJB version 2.x.
Of course, the EJB specification clearly states that, in order to support backward compability, those old EJBs (version 1.x) are also supported by containers that support EJB 2.x, however, since there are new changes (such as Local client view, EJB-QL, etc), it is not recommend that new applications are written based on EJB 1.x. The support of EJB 1.x is ONLY for backward compability purposes.
Nick.

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Nicholas Cheung

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Posts: 4982

posted 20 years ago

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Hi Kyle,
I think Shekar is going to ask, does your book discuss how to write EJBs in
- version 1.x
- version 2.x
- version 3.x
under WSAD.
That is to say, will your book only cover one of the above, or all of the above.
Personally, I think you have discussed how to write EJB v1.x under VAJ v3.5 in the 1st edition of your book, while how to write EJB v2.x under WSAD v5.x in the 2nd edition of your book, and you MAY discuss how to write EJB v3.x under WSAD v6.x in the 3rd edition, rite?

Nick.

Kyle Brown

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posted 20 years ago

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If your interpretation of his question is correct, than you are right, Nicholas. We cover developing to EJB 2.0 in WSAD 5.02.
Kyle

Kyle Brown, Author of Persistence in the Enterprise and Enterprise Java Programming with IBM Websphere, 2nd Edition
See my homepage at http://www.kyle-brown.com/ for other WebSphere information.

Don't get me started about those stupid light bulbs.