I think we shouldn't expect to use the schema as same as dao-hib at this stage, as I believe there would still some minor changes in the JPA Dao. And I think it should be acceptable to have little update on the schema change as long as we specify them out and provide some simple migration utility.
With regard to the JPA 2.0, I am thinking about that whether we can make ODE run against both JPA 1.0 and JPA 2.0 container. I believe we have many users running against JPA 1.0 container, if we upgrade it to JPA 2.0, they have to upgrade their JPA container. So it would be best that we say adding some jars, it would support JPA 2.0, otherwise, it is for JPA 1.0 by default. what do you think? For the jpa change that I did now, I will try to commit them in after axis2-war module test part is enabled and checked in. Regard Jeff On Fri, Jun 11, 2010 at 1:32 AM, Aaron Anderson <[email protected]>wrote: > HI Rafal, > > I have attached the generated derby DDL scripts for the hibernate DAO > (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it > shouldn't be much of a problem to make the JPA entities map to the hibernate > schema. It is probably best that there is one static and supported DB schema > anyway. > > While addressing the JPA changes we should also consider upgrading to JPA > 2.0. There are only a few features that would simplify the JPA code but if > there are not that many current ODE JPA users it would be best to start off > with the latest version and avoid future versioning conflicts. > > Regards, > > Aaron > > *From:* Rafal Rusin <[email protected]> > *To:* Jeff Yu <[email protected]>; Aaron Anderson < > [email protected]> > *Cc:* [email protected] > *Sent:* Thu, June 10, 2010 9:01:00 AM > *Subject:* Changing roadmap for JPA refactoring > > Hello, > > is this possible (and how much effort it is) to make JPA (hibernate powered > version) work on the same schema as dao-hib does? > This way we could migrate all current hibernate users to JPA in future and > finally drop hib-dao. I believe there are not much current OpenJPA users, so > we can modify this schema. On the other hand, there's a lot of dao-hib > users, > so we really want to migrate them (because of later drop for dao-hib). > > What do you think? > > -- > Regards, > Rafał Rusin > http://rrusin.blogspot.com > -- Cheers, Jeff Yu ---------------- blog: http://jeff.familyyu.net
