Transaction synchronization allows the application server to be notified before and after the transaction completes. For each transaction started, the application server may optionally register a
Synchronization callback object to be invoked by the transaction manager either before or after completion:
beforeCompletion method is called prior to the start of the two-phase transaction complete process. This call is executed in the same transaction context of the caller who initiates the
TransactionManager.commit, or with no transaction context if
Transaction.commit is used.
afterCompletion method is called after the transaction has completed. The status of the transaction is supplied in the parameter. This method is executed without a transaction context.