migration to Hibernate ORM 6

[gavinking]

This is probably a big job, and it's not yet urgent, but it's about time we did at least a bit of exploratory work to get an estimate of just how big of a job and where the damage is.

[hantsy]

Before updating to Hibernate v6 code base, if possible to release a Jakarta EE 9 compatible version for the jakarta namespace change.

[DavideD]

We plan to have a look at Jakarta beginning of next year, so it will probably happen before the upgrade of Hibernate 6

[DavideD]

I've pushed upstream the current state of the integration with ORM 6: https://github.com/hibernate/hibernate-reactive/tree/wip/ORM-6

Note that it requires some changes in ORM to work: hibernate/hibernate-orm#5380

It's still a work in progress and most of the tests are failing - queries won't work - but it's possible to run the build and import the project in Intellij, so I think it's a good starting point.

[gavinking]

Awesome 👏 looking forward to checking it out!

[blafond]

:) Nice @DavideD !

[DavideD]

This issue was superseeded by this other one