[wildfly-dev] JPA container and IronJacamar Synchronizations are registered using org.wildfly.transaction.client.ContextTransactionSynchronizationRegistry but the Hibernate ORM Synchronizations are registered via org.jboss.as.txn.service.internal.tsr.TransactionSynchronizationRegistryWrapper

Hi, I made a local change to JCAOrderedLastSynchronizationList, to have the JPA container (TransactionUtil$SessionSynchronization) afterCompletion() always be run after Hibernate afterCompletion() but before the JCA afterCompletion(). As I am implementing EntityManager caching [1] and want to ensure that the EntityManager instances are only returned to the cache after the EntityManager is expected to be available for reuse. In my debugging, I noticed that the JCAOrderedLastSynchronizationList only has the Hibernate synchronizations being added but not the JCA or JPA container synchronizations. [2] shows that the JCA + JPA Synchronizations are registered via org.wildfly.transaction.client.ContextTransactionSynchronizationRegistry and Hibernate ORM Synchronization is registered via the org.jboss.as.txn.service.internal.tsr.TransactionSynchronizationRegistryWrapper Should org.wildfly.transaction.client.ContextTransactionSynchronizationRegistry be changed to use JCAOrderedLastSynchronizationList as well, so that IronJacamar (JCA) Synchronizations are run in the correct order? Should we change the JPA subsystem/container to also ensure that Hibernate ORM 5.3 uses the ContextTransactionSynchronizationRegistry instead of the org.jboss.as.txn.service.internal.tsr.TransactionSynchronizationRegistryWrapper? Is there a WildFly service that represents the org.wildfly.transaction.client.ContextTransactionSynchronizationRegistry lifecycle? The JPA persistence unit service (or global JPA service) should depend on that service, so that applications undeploy if the TSR is stopped. [3] is also related to the the [1] effort and would be impacted by the above mentioned changes. Scott [1] EntityManager caching https://issues.jboss.org/browse/WFLY-11233 [2] https://paste.fedoraproject.org/paste/-wHaYB3mzR2yTXTfU3LbZA [3] Ensure that Hibernate uses direct reference to TSR for better performance https://issues.jboss.org/browse/WFLY-11243