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what is the equivalent of BMP and CMP in EJB3?

 
peter tong
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I have learnt EJB3 in a course, they taught Entity Bean and session Bean, but not any BMP and CMP, so I want to learn what BMP and CMP is in EJB2 and what is their equivalent in EJB3?
 
peter tong
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is this question too difficult?
 
Ulf Dittmer
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Entity Beans (both BMP and CMP) no longer exist in EJB 3 - they have been replaced by the Persistence API. So it probably doesn't make much sense to start learning about them in detail now.

A good introduction to EJB 3 would be part IV and V of the JEE Tutorial.
 
peter tong
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Oh, but there are still many application using EJB2, and they ask such question (BMP, CMP) in interview....
 
Scott Selikoff
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Originally posted by peter tong:
is this question too difficult?

Hardly, but you may try being more patient with responses. JavaRanch members, staff and non-staff alike, generously donate their time to answering questions, so don't be upset if your question isn't answered immediately.

Originally posted by peter tong:
Oh, but there are still many application using EJB2, and they ask such question (BMP, CMP) in interview....

But your original question was about EJB3, so I'm not sure what you are asking here. Have you tried reading a book on EJB2? Anyway, interviewers could ask a *ton* of questions on BMP/CMP and if you've never worked with them before you should tell them that. Trying to fake your way through an interview rarely works, especially for EJB stuff; hands on experience is usually required.
[ July 17, 2008: Message edited by: Scott Selikoff ]
 
peter tong
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thank you!!
just some comment, in Hong Kong, I think EJB2 is still donate....
 
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