[hibernate-dev] Jakarta EE: JPA 3.0 is coming

[Sanne Grinovero]

On Wed, 11 Mar 2020 at 08:39, Yoann Rodiere <yrodiere at redhat.com> wrote:

> > Yet I'm convinced that having a release
> > which provides full JPA 3.0 TCK between 5 and 6 (or however it gets
> > renamed) would be no good to us, as it would create an adoption
> > barrier for both cathegories of people: the ones not interested to
> > migrate away from JPA2, and the ones not interested to migrate beyond
> > JPA3.
>
> I get that, but I'm definitely not as hopeful as you are as to the
> reliability of those bytecode hacks you mentioned. But I guess that's an
> uphill battle.
>

I'm not a fan of bytecode hacks either, so maybe let's just see what a POC
looks like before tearing it down?

What's to stop you from supporting JPA2.0 in ORM 7, with the same hacks you
> mentioned for JPA3?
>

Right, and in fact I mentioned as one of the possibilities for ORM6 to be
able to read and interpret the "legacy" annotations from JPA2.

I believe that's important to not get in the way of adoption but rather
actively help with some flexibility, otherwise people will have a very hard
time to upgrade to 6, and that's something that risks becoming a
significant burden on us all.

Thanks,
Sanne


>    - People who want JPA3 only have a hack-free ORM 7 that happens to
>    support JPA2 annotations.
>    - People who want JPA2 can migrate to ORM 7, and we'll provide hacks
>    to make it work.
>
> At least we wouldn't be penalizing people who want to migrate to JPA3 with
> potentially unreliable bytecode hacks. Only people who want the latest and
> greatest on an older API (which is, after all, quite an unreasonable
> request) would have to put up with that.
> And we'll be able to completely ignore these hacks in ORM 8 after we
> rebased it on 7, since ORM 8 will drop support for JPA2 (I hope?).
>
> Yoann Rodière
>
> Sr. Software Engineer, Middleware Engineering, Hibernate team
>
> Red Hat <https://www.redhat.com>
>
> <https://www.redhat.com>
>
>
> On Wed, 11 Mar 2020 at 00:17, Guillaume Smet <guillaume.smet at gmail.com>
> wrote:
>
>> On Tue, Mar 10, 2020 at 7:12 PM Sanne Grinovero <sanne at hibernate.org>
>> wrote:
>>
>> > The "big bang" approach that Validator implemented is an option as
>> > well; but the context is a bit different as we're having an actual
>> > major release being developed, and the matter of possible time
>> > pressure.
>> >
>>
>> Thus the proposal of Yoann and me to just rename the current 6 to a later
>> version and release a new major version that only contains the Jakarta
>> package change.
>>
>> That way, we don't end up doing additional work and having weird versions
>> partially supporting both.
>>
>> --
>> Guillaume
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>>