June 15, 2006

Session 4: Enterprise Development with JPA

[Patrick Linskey / Mike Keith]

blah blah; JPA is a lot like hibernate. Two of the worst posible examples for mapping inheritance person<={employee, customer} , animal<={land animal, air animal} (can't employees buy stuff? What about penguins and sugar–gliders) :–)

There are a couple of slightly ugly–looking features in JPA that the 'enterprise–ness' foists on you, like forcing optimistic locking version numbers into the bean – great if you do intend to use detach/re–attach semantics, a pain if not.

Some EJB persistence providers will auto–detect annotated classes from a JAR, so you don't need to declare anything about which classes are persistent outside of the classes themselves. This could be really cool, if it's sufficiently fast


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