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Entity vs JDO

Pradeep bhatt
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Joined: Feb 27, 2002
Posts: 8904

HI,
Can anyone please compare entity beans with JDO.
Which is the best JDO implementation?
Thanks in adv


Groovy
Chris Mathews
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Joined: Jul 18, 2001
Posts: 2712
We have actually had quite a few conversations in the past few weeks about this subject, either directly or indirectly. The major consensus is that JDO looks really nice but it is not being supported by any of the major players. In fact, there isn't a single implementation of JDO that fully supports the spec. The most widely used JDO-type product is Castor, and Castor is only JDOish. The Jakarta OJB project has aspirations of JDO but isn't there yet.
Basically CMP is still the only persistance framework in town from a standards perspective. Hopefully JDO will catch on more and we will actually have a choice.
Chris Mathews
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Joined: Jul 18, 2001
Posts: 2712
Here is a link to a discussion currently going on over at TheServerside: Sun Finally Gives JDO a Homepage.
Rick Hightower
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Joined: Feb 20, 2002
Posts: 350
I have used EJB CMP 2.0 a lot. And I wrote a tutorial on it (included in sig). I am biased towards it. I have seen several JDO presentations. There are features of JDO that I really like and find are useful. However, at this point I think EJB CMP leads the way. Keep an eye on JDO, if you have to build/deploy now and you are using J2EE then use EJB CMP 2.0. In the future, I think EJB CMP will be built on top of JDO (my opinion after looking at the mass overlap)...this should happen by EJB 2.2 or 2.3 (guess).
Start learning about EJB CMP 2.0 with the step by step tutorial that I wrote.
(Note the link has reviews of the tutorial as well)


Rick Hightower is CTO of Mammatus which focuses on Cloud Computing, EC2, etc. Rick is invovled in Java CDI and Java EE as well. linkedin,twitter,blog
Rick Hightower
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Joined: Feb 20, 2002
Posts: 350
BTW I almost always agree with Chris. He is a real smart dude.
Sean Sullivan
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Joined: Sep 09, 2001
Posts: 427
Please visit:
http://www.theserverside.com/discussion/thread.jsp?thread_id=771
http://jinx.swiki.net/254
http://jinx.swiki.net/316
Pradeep bhatt
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Joined: Feb 27, 2002
Posts: 8904

Hi,
What about the Sun's reference implementation ? How stable is it?
 
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subject: Entity vs JDO
 
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