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Over 10 years ago, I wrote my first blog post. Since then, I've authored books, had kids, traveled the world, found Trish and blogged about it all.

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Tuesday September 26, 2006

Using the Java Persistence API with Mike Keith and Patrick Linskey

I'm sitting in a presentation on JPA from Mike Keith from Oracle and Patrick Linskey from BEA. They asked the room how many folks are using (or have used) JPA. About 6 hands went up in a room of 50-60 folks. JPA is definitely bleeding-edge, and based on my experience, it's not quite ready for prime-time yet. I think this is obvious as most products that implement JPA haven't had a final release yet.

Background: Part of JSR-220 (EJB 3.0). It began as a simplification of entity beans and evolved into POJO persistence technology. JPA's primary features are:

  • POJO-based persistence model (simple Java classes-not components)
  • Support for enriched domain modeling (inheritance, polymorphism, etc.)
  • Expanded Query Language
  • Standardized object/relational mapping (using annotations and/or XML)
  • Usable in Java EE and Java SE Environments
  • Support for pluggable persistence providers

At this point, I tuned out to post my presentation from this morning. Most of the talk seemed to be pretty standard, as in they showed annotations, the EntityManager interface, and some JPA QL. Interestingly enough, they used the same entities that Thomas did in our Kickstart application. I wonder if there's a JPA tutorial out there that everyone is building their presentations from. ;-)

One interesting thing I heard from Colin is that Spring/Interface21 is looking into creating ready-to-go starter applications. For example, something that allows you to start with Spring + Hibernate right away, or to create something like Salesforce.com with minimal effort. Sounds similar to AppFuse, but who knows.

Posted in Java at Sep 26 2006, 12:23:24 PM MDT 1 Comment
Comments:

It's actually kind of surreal to read blog entries (and comment on them) on a conference while the conference is in session. I guess before pervasive wifi everyone had to actually listen to the presenters... Hey -- wasn't wifi down in your session? ;)

Posted by Jason Shao on September 26, 2006 at 02:36 PM MDT #

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