[hibernate-dev] Hibernate ORM and Java 8 usage

[Steve Ebersole]

Vlad, I see you created a PR for moving your new tests out of
hibernate-entitymanager into documentation.  I guess that depends on the
intent.  Are they meant as illustrations?  And if so, how are you expecting
people will see them?  And if they are meant as real tests rather than as
illustrations, I think moving them is not appropriate.

On Tue, Jan 12, 2016 at 4:57 AM andrea boriero <dreborier at gmail.com> wrote:

> I'm not against the use of Java 8 letting AnimalSniffer guarding for
> compatibility,
> but I understand this can cause some problems so I'm ok with removing Java
> 8 usage from tests.
>
> On 12 January 2016 at 10:07, Gunnar Morling <gunnar at hibernate.org> wrote:
>
> > @Vlad, what Java 8 syntax specifically are you using in the user guide
> > tests (examples?)?
> >
> > I like the idea of using a current syntax in usage examples, to give
> > the guide a current look and show that our APIs play well with current
> > Java versions (while staying compatible with older ones).
> >
> >
> >
> > 2016-01-12 10:51 GMT+01:00 Sanne Grinovero <sanne at hibernate.org>:
> > > +1 for Vlad's proposal to use the same JDK for tests and main code in
> > > a given module.
> > >
> > > Infinispan requires Java8 at runtime too, so that module should be the
> > > only one to use Java8?
> > >
> > > On 12 January 2016 at 07:55, Vlad Mihalcea <mihalcea.vlad at gmail.com>
> > wrote:
> > >> I used Java 8 syntax in the User Guide tests as I remembered that
> tests
> > can
> > >> use it, but I also agree that this is a rather strange move.
> > >> Since we need to support Java 1.6, maybe it's a better idea to use the
> > >> latest JDK just in the modules where we have no other choice.
> > >> For testing, I think that 1.6 is just fine and I could easily change
> > those
> > >> tests to remove the 1.8 dependency.
> > >>
> > >> So I vote for using the same JDK for both main and test in a
> particular
> > >> module.
> > >>
> > >> Vlad
> > >>
> > >> On Mon, Jan 11, 2016 at 11:35 PM, Steve Ebersole <steve at hibernate.org
> >
> > >> wrote:
> > >>
> > >>> The former.  People commit things that already assume the move to
> Java
> > 8
> > >>> locally to build (and test).  But at the moment we have not
> formalized
> > >>> that, and so that causes problems when we import into an IDE - the
> > imported
> > >>> IDE project is built for 1.6 compliance and so everything we try in
> > the IDE
> > >>> fails.
> > >>>
> > >>> On Mon, Jan 11, 2016 at 3:33 PM Gunnar Morling <gunnar at hibernate.org
> >
> > >>> wrote:
> > >>>
> > >>> > Hey,
> > >>> >
> > >>> > > or we move to Java 8 and rely on
> > >>> > > AnimalSniffer to make sure we are still compatible.
> > >>> >
> > >>> > WDYM by "move to Java8" exactly? Requiring it at Hibernate's build
> > >>> > time, or also at runtime in user apps?
> > >>> >
> > >>> >
> > >>> > 2016-01-11 19:49 GMT+01:00 Steve Ebersole <steve at hibernate.org>:
> > >>> > > The use of Java 8 features in Hibernate ORM is starting to
> expand.
> > >>> > Luckily
> > >>> > > it is still constrained to just tests.
> > >>> > >
> > >>> > > However these usages make development in an IDE more and more
> > >>> difficult.
> > >>> > > Previously this was isolated to hibernate-infinispan.  Now[1]
> this
> > has
> > >>> > > crept into hibernate-entitymanager.  We need to have a plan here.
> > >>> Either
> > >>> > > we stop using Java 8 anywhere, or we move to Java 8 and rely on
> > >>> > > AnimalSniffer to make sure we are still compatible.
> > >>> > >
> > >>> > > Votes?  Other options?
> > >>> > >
> > >>> > > [1]
> > >>> > >
> > >>> >
> > >>>
> >
> https://github.com/hibernate/hibernate-orm/commit/c2ece0108ed52d5e3a227ed0150cfb5cb1a76101
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