Steve, I have pushed a proposal for HHH-9701 to: https://github.com/johnaoahra80/hibernate-orm/tree/HHH-9701
There are a couple of areas that I would appreciate feedback; 1) Serialization/Deserialization - EntityEntries implementations can be serialized and each implementation provide their own serialization method. I have modified the serialization of EntityEntry in EntityEntryContext to write the Implementation class to the OutputStream so the correct class can be used to deserialize the object stream. Is the exception handling sufficient here, or do we need more robust handling of deserialization exceptions? : see https://github.com/johnaoahra80/hibernate-orm/commit/ec9b1fa3b97131ff1e65a1cc30ff6e4f2d2c8a28#diff-b55e1e51b30abe8d3c280bb22aeb6a44R380 2) In our (perf team) use case, we want to be able to share the ImmutableEntityEntry between sessions when they are referenced cached in the 2lc. I have modified EntityEntryContext to not null managedEntity.$$_hibernate_setEntityEntry if the EntityEntry is an instance of ImmutableEntityEntry. Do we need to add an extra checks here, to ensure that the entity is Reference Cached? I am not sure how we would test that case? : see https://github.com/johnaoahra80/hibernate-orm/commit/ec9b1fa3b97131ff1e65a1cc30ff6e4f2d2c8a28#diff-b55e1e51b30abe8d3c280bb22aeb6a44L281 3) Lock Mode: Steve you mentioned about not doing locking for Immutable entities. Where is the locking implemented? Would it be sufficient to simply set the LockMode on the ImmutableEntityEntry to NONE/READ_ONLY when setLockMode is called? Thanks John -- John O'Hara joh...@redhat.com JBoss, by Red Hat Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in UK and Wales under Company Registration No. 3798903 Directors: Michael Cunningham (USA), Charlie Peters (USA), Matt Parsons (USA) and Michael O'Neill (Ireland). _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev