We have been using a custom Oracle batching implementation to allow batch updates for versioned entities with the Oracle JDBC driver.

We tried to migrate to the latest Hibernate 4 CR, but found that the hooks for batching have changed, and it is not really obvious how this works or is configured.

Previously (3.6.x as well as older releases) had a hibernate.jdbc.factory_class property which allowed specifying a factory class for batching implementations.

How does this work now? Is it even supported?