Is it possible at all?
Does the recently implemented support for Hibernate annotations include JPA annotations?
Any expected side effects with seam managed persistence context?

How sharp is the bleeding edge - how much will it probably hurt ?
;-)

The amount you'll bleed depends entirely on how, um, exotic your use of Query is. The Shards implementation of Query is fairly rudimentary. If you just want basic predicate support you'll be fine, but if you need to do any sort of aggregation (sum, avg, etc), you're not going to get the right answer. Critieria support is much better, but Criteria isn't part of JPA....

So, if you're fine with rudimentary Query support you'll still need to write a few adapter classes to make the ShardedSessionFactory available via JPA. I went halfway with it a couple months ago and it wasn't that bad (got distracted, never finished), and I didn't even know anything about JPA. If you're already familiar with the API it shouldn't take you long to get it together.

Let me know if I can be of assistance.

Max

The support however covers JPA annotations as well as Hibernate extension annotations

Hi I am interested in pursuing this integration. I can do away with Query usage, using Criteria API instead which, it sounds like, is usable.

Can I take a look at your source? Thanks!