[hibernate-dev] 6.0 planning
Emmanuel Bernard
emmanuel at hibernate.org
Mon Apr 4 11:29:23 EDT 2016
I don't think I would equate reactive and CQRS, but reactive (say in the
Rx sense) definitely goes for a more action centric persistence than an
ORM centric persistence.
I did explore only a little bit but I could not fully re conciliate a Rx
centric API with the idea of a (extra)-transaction bound persistence
context.
Ideas welcome.
On Fri 2016-04-01 22:53, Vlad Mihalcea wrote:
> Just my 2 cents:
>
> Reactive means many things. From a persistence perspective, reactive
> implies CQRS which is exactly the reverse of what Hibernate currently does.
> Also, reactive systems are eventually consistent which contradicts
> Hibernate's strong consistency guarantees.
>
> Vlad
>
> On Fri, Apr 1, 2016 at 10:41 PM, Petar Tahchiev <paranoiabla at gmail.com>
> wrote:
>
> > Is there any plans for reactive support in Hibernate6?
> >
> > 2016-04-01 22:07 GMT+03:00 Steve Ebersole <steve at hibernate.org>:
> >
> > > I can look with you right after I finish with the hibernate-entitymanager
> > > consolidation into hibernate-core. Next week sometime, hopefully
> > early...
> > > I'll follow up on your other email thread.
> > >
> > > On Thu, Mar 31, 2016 at 3:06 PM Gail Badner <gbadner at redhat.com> wrote:
> > >
> > > > I'm not sure what you mean by "ready". My POC is ready for discussion.
> > > >
> > > > On Thu, Mar 31, 2016 at 12:51 PM, Steve Ebersole <steve at hibernate.org>
> > > > wrote:
> > > >
> > > >> Is it ready?
> > > >>
> > > >> On Thu, Mar 31, 2016, 2:28 PM Gail Badner <gbadner at redhat.com> wrote:
> > > >>
> > > >>> I would like to see OperationContext introduced.
> > > >>>
> > > >>> On Thu, Mar 31, 2016 at 6:00 AM, Steve Ebersole <steve at hibernate.org
> > >
> > > >>> wrote:
> > > >>>
> > > >>>> Oh... One other change I want to propose is better incorporate
> > > >>>> MappedSuperclass into the org.hibernate.mapping hierarchy. Koen,
> > this
> > > >>>> will
> > > >>>> affect tooling the most as it would mean changes to those contracts.
> > > >>>>
> > > >>>> If we are making disruptive changes there, I guess the next logical
> > > >>>> question is whether we use that opportunity to make other disruptive
> > > >>>> changes that we have been putting off due to disruption. Mainly I
> > am
> > > >>>> thinking of modeling the org.hibernate.mapping representation of the
> > > >>>> domain
> > > >>>> hierarchy as more in-line with JPA terms.
> > > >>>>
> > > >>>> On Thu, Mar 31, 2016 at 7:43 AM Steve Ebersole <steve at hibernate.org
> > >
> > > >>>> wrote:
> > > >>>>
> > > >>>> > Well baseline on Jana 8 would mean app support for many Java 8
> > > >>>> features.
> > > >>>> > Currency, optional, etc
> > > >>>> >
> > > >>>> > On Thu, Mar 31, 2016, 7:38 AM Petar Tahchiev <
> > paranoiabla at gmail.com
> > > >
> > > >>>> > wrote:
> > > >>>> >
> > > >>>> >> +1 on going java8. I'd also suggest adding support for
> > > javax.currency
> > > >>>> >> JSR354
> > > >>>> >>
> > > >>>> >> 2016-03-31 15:23 GMT+03:00 Vlad Mihalcea <
> > mihalcea.vlad at gmail.com
> > > >:
> > > >>>> >>
> > > >>>> >> > Hi,
> > > >>>> >> >
> > > >>>> >> > It makes sense to unify the core with hem in a single module.
> > > >>>> >> >
> > > >>>> >> > Currently, the flushing behavior differs if we execute a query
> > > >>>> through a
> > > >>>> >> > Session or through an EntityManager.
> > > >>>> >> > Does it mean that we eliminate those differences as well?
> > > >>>> >> >
> > > >>>> >> > Vlad
> > > >>>> >> >
> > > >>>> >> > On Thu, Mar 31, 2016 at 2:57 PM, Steve Ebersole <
> > > >>>> steve at hibernate.org>
> > > >>>> >> > wrote:
> > > >>>> >> >
> > > >>>> >> > > We have been having a few side discussions about plans for
> > 6.0,
> > > >>>> and I
> > > >>>> >> > > thought it would be a good idea to consolidate them together.
> > > >>>> >> > >
> > > >>>> >> > >
> > > >>>> >> > > 1. Incorporate the SQM work. Lots of pieces go into this:
> > > >>>> >> > > 1. Replacing the interpretation of HQL/JPQL and
> > Criteria
> > > >>>> >> queries.
> > > >>>> >> > > 2. *Possibly* leveraging SQM to deal with entity
> > > operations
> > > >>>> >> > > (load-by-id, merge, etc).
> > > >>>> >> > > 3. Improved Query contracts
> > > >>>> >> > > 4. Improved persister contracts (including addition of
> > an
> > > >>>> >> > "embeddable
> > > >>>> >> > > persister").
> > > >>>> >> > > 5. Improved Type contracts
> > > >>>> >> > > 2. Extensions to JPA criteria based on SQM work(this is
> > > >>>> probably
> > > >>>> >> more
> > > >>>> >> > on
> > > >>>> >> > > ongoing 6.x task)
> > > >>>> >> > > 3. Baseline on Java 8
> > > >>>> >> > >
> > > >>>> >> > > Is there anything else anyone wants to discuss getting
> > > included?
> > > >>>> >> > >
> > > >>>> >> > > Another one I'd like to discuss is the consolidation of the
> > > >>>> >> > hibernate-core
> > > >>>> >> > > and hibernate-entitymanager modules into a single module
> > > >>>> (possibly
> > > >>>> >> > renamed
> > > >>>> >> > > hibernate-orm). There are a lot of reasons and benefits to
> > > doing
> > > >>>> >> this:
> > > >>>> >> > >
> > > >>>> >> > > 1. A major one would be the consolidation of "type
> > systems".
> > > >>>> >> > Hibernate
> > > >>>> >> > > has org.hibernate.type.Type. JPA defines
> > > >>>> javax.persistence.Type.
> > > >>>> >> Now
> > > >>>> >> > > with
> > > >>>> >> > > SQM we have a 3rd type system in play.
> > > >>>> >> > > 2. It is also the major hurdle to moving to being able to
> > > >>>> fully
> > > >>>> >> > replace
> > > >>>> >> > > the legacy criteria with JPA criteria. If Session and
> > > >>>> >> EntityManager
> > > >>>> >> > (as
> > > >>>> >> > > well as SessionFactory ad EntiytManagerFactory) were fully
> > > >>>> >> integrated
> > > >>>> >> > > then
> > > >>>> >> > > Session would be able to build/handle JPA criteria
> > queries.
> > > >>>> >> > > 3. Simplified HEM bootstrapping
> > > >>>> >> > >
> > > >>>> >> > >
> > > >>>> >> > > There are also a few challenges to doing this consolidation
> > of
> > > >>>> the
> > > >>>> >> > > hibernate-core and hibernate-entitymanager modules. The big
> > > one
> > > >>>> tht
> > > >>>> >> > stick
> > > >>>> >> > > out in my head is event-listener with different behaviors
> > > >>>> between core
> > > >>>> >> > and
> > > >>>> >> > > hem.
> > > >>>> >> > > _______________________________________________
> > > >>>> >> > > hibernate-dev mailing list
> > > >>>> >> > > hibernate-dev at lists.jboss.org
> > > >>>> >> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > > >>>> >> > >
> > > >>>> >> > _______________________________________________
> > > >>>> >> > hibernate-dev mailing list
> > > >>>> >> > hibernate-dev at lists.jboss.org
> > > >>>> >> > https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > > >>>> >> >
> > > >>>> >>
> > > >>>> >>
> > > >>>> >>
> > > >>>> >> --
> > > >>>> >> Regards, Petar!
> > > >>>> >> Karlovo, Bulgaria.
> > > >>>> >> ---
> > > >>>> >> Public PGP Key at:
> > > >>>> >>
> > > http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x19658550C3110611
> > > >>>> >> Key Fingerprint: A369 A7EE 61BC 93A3 CDFF 55A5 1965 8550 C311
> > 0611
> > > >>>> >> _______________________________________________
> > > >>>> >> hibernate-dev mailing list
> > > >>>> >> hibernate-dev at lists.jboss.org
> > > >>>> >> https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > > >>>> >>
> > > >>>> >
> > > >>>> _______________________________________________
> > > >>>> hibernate-dev mailing list
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> > > >>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > > >>>>
> > > >>>
> > > >>>
> > > >
> > > _______________________________________________
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> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > >
> >
> >
> >
> > --
> > Regards, Petar!
> > Karlovo, Bulgaria.
> > ---
> > Public PGP Key at:
> > http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x19658550C3110611
> > Key Fingerprint: A369 A7EE 61BC 93A3 CDFF 55A5 1965 8550 C311 0611
> > _______________________________________________
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> > https://lists.jboss.org/mailman/listinfo/hibernate-dev
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