[hibernate-dev] 6.0 planning

[Vlad Mihalcea]

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.
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