According to Patrick Linskey, SolarMetric CTO, EJB3 and JDO2 spec alignments, mainly in concern with O/R mapping, could lead to either a larger or fragmented knowledge base. While Linskey believes there will always be JDO and EJB, the question lies in where the specs will go over time. In this tech talk, Linskey answers questions about the EJB/JDO controversy including:

• Why there are two specs in the first place
• What differences lie between the two specs
• How the two expert groups will align the persistence models
• The pros and cons of having two specs
• What future approaches may be to resolve the EJB/JDO issue

Watch Patrick Linskey on the Controversy Between EJB3 and JDO2.

NOTE: This tech talk was recorded in March of 2005.

"So the JDO implementation can translate JDOQL statements into a single SQL statement, just like you can with an EJBQL, they are very similar from a Symantec standpoint."

Mark, I assure you that Symantec has nothing to do with this. :)

This typo has been fixed.

Nitin

Patrick is undoubtably one of the brightest and most down-to-earth software engineers I have ever met. He's now at BEA working on their EJB3 engine, since they bought Solarmetric.

Peace,

Cameron Purdy
Tangosol Coherence: Clustered Shared Memory for Java

Patrick is undoubtably one of the brightest and most down-to-earth software engineers I have ever met. He's now at BEA working on their EJB3 engine, since they bought Solarmetric.Peace,Cameron PurdyTangosol Coherence: Clustered Shared Memory for Java

Good to know that even the "brightest and most down-to-earth" people can talk absolute BS and be entirely torn off the reality in their judgements. Makes us feel much better, next time we say something stupid :)

Patrick was unable to answer the fundamental question: "why do we need two specs for the same thing?". The best he could say was that maybe different people will feel more comfortable with different views on the SAME conceptual model.

Even worse, when he was given more straightforward question "what actual product requirements would cause one to choose one JDO over EJB or the other way round?" he started talking about vendors, which vendor you want to go with and what that vendor supports. At that point any wise person would start crying bitterly.

*sigh*

Thanks for posting the date of the talk!

I really appreciate this.

Now one can't help but wonder why the talk took over a year to be posted ...

Anyway, please continue to post the dates of these!

John Hurst
Wellington, New Zealand.

Now one can't help but wonder why the talk took over a year to be posted

Because these interviews are recorded at the "TheServerSide java symposium" and are released at a time suitable to market a forthcoming edition of that symposium (the one in june in barcelona)?

(It's a bit ironic, though, that the person being interviewed in a newly released recording presents himself as the CTO of a company that was integrated into another company half a year ago ;-)

In any case, as you say: good that we (now) know the dates of these interviews and good that there are these interviews in the first place!

  cheers,
  gerald

http://www.gerald-loeffler.net

Thanks for posting this.

It would have been a lot more useful if posted earlier.

The world (of IT) changes a lot in 6 months let alone 12+ months.

Cheers,
Ashley.