I decided against JPA because you lose a lot of framework
functionality which it seems is unfortunately tied to the Mapper
classes.


On Mar 23, 12:15 pm, saem <saemgh...@gmail.com> wrote:
> I suggest checking outhttp://www.liquibase.org/
>
> It's the best open source database change management tool I've come
> across to date.
>
> On Mar 20, 11:18 pm, Derek Chen-Becker <dchenbec...@gmail.com> wrote:
>
> > Well. I think it depends. I know that if you use the hibernate provider that
> > you can set a property to automatically create/update the schema when it
> > runs. You can look at the JPA Demo site in the Lift repo:
>
> >http://github.com/dpp/liftweb/blob/794cac5abf6b1ae5502f6321847f6186fc...
>
> > The relevant property is "hibernate.hbm2ddl.auto"
>
> > I haven't used TopLink but it appears to have a subset of this
> > functionality:
>
> >http://www.oracle.com/technology/products/ias/toplink/JPA/essentials/...
>
> > The caveat is that with Hibernate it can alter existing tables to match
> > changes in your entities, but toplink appears to do a drop-then-add, which
> > kind of sucks. I haven't looked at JPOX or any other JPA impls.
>
> > Derek
>
> > On Fri, Mar 20, 2009 at 7:13 PM, Alex <a...@liivid.com> wrote:
>
> > > I'm going through the recently announced book and JPA looks pretty
> > > attractive.  There is no mention of schema management - e.g. creating
> > > and modifying tables.  Is there any or is that all done manually?

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