Jackson 3.0, JSTEP-9: deprecation and removal of jackson-datatype-hibernate modules

[cowtowncoder]

(part of #72 uber-Discussion)

As per more general JSTEP-9 -- deprecation and removal of some Jackson 2.x modules from 3.0 -- the current is for Hibernate datatype modules to be discontinued, not upgrade or maintained for Jackson 3.0.
This is strictly based on years-long lack of active Maintainer for modules.

If an active maintainer was found, we would change the plan.

This Discussion is created just to gauge interest in having these modules available for Jackson 3.x.

NOTE: "removal from 3.0" simply means no migration to build 3.x versions -- not deletion of code or repo or anything like that. Modules will be supported for 2.x regardless.

[pjfanning]

Let's remove the modules in v3 and if there is later demand for it and someone volunteers to maintain it, then we can resurrect the modules. I might even volunteer myself. But at the start, we don't need to be proactive - we can react if people come to us to ask for it to be migrated to jackson 3.

[JooHyukKim]

I concur. Sounds like a cost-effective option with little to lose.

[cowtowncoder]

This has been my thinking as well, but wanted to hear what others think.

And on if to upgrade -- I would specifically only do that if there is someone willing to take some form of ownership: I can (and am willing to) help make mechanical upgrade, but I don't have Hibernate knowledge to work with actual functionality (nor time + interest to obtain enough).