flush() occurs though the transaction is rollbacked?!
kannattaa Nov 21, 2007 7:25 PMis it normal or bug, that flush() always occurs, even if the transaction rollbacks?
i have seam-managed hibernate session configured according to seam documentation http://docs.jboss.com/seam/2.0.0.GA/reference/en/html/persistence.html#d0e5849
<property name="transaction.flush_before_completion">true</property> <property name="connection.release_mode">after_statement</property> <property name="transaction.manager_lookup_class">org.hibernate.transaction.JBossTransactionManagerLookup</property> <property name="transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>
and a method
@Begin @End public void save(Person person){ currentSession.save(person); currentSession.createSQLQuery("{call initializePerson(:person_id)}") .setLong("person_id", person.getId()) .executeUpdate(); currentSession.refresh(person); if (!person.isInitialized()) throw new RuntimeException("Failed to initialize person"); }
as a result of the method's execution:
if person is uninitialized , it will be a rollbacked transaction due to the RuntimeException. (Because it is a "System Exception" and they always cause a transaction rollback http://docs.jboss.com/seam/2.0.0.GA/reference/en/html/events.html#d0e4391)
As expected the stored procedure "initializePerson" will be rollbacked.
But an insert of the method "currentSession.save(person)" will be executed. Because the property transaction.flush_before_completion's value is true.
if hibernate.transaction.flush_before_completion is enabled, the session will be automatically flushed during the before completion phase of the transaction.(http://www.hibernate.org/hib_docs/reference/en/html/session-configuration.html)
Thus we have 'partial' committed transaction. Imho, it isn't normal behaviour, when an exception occurs.
Any suggestions to cause full rollbacking ?
(without disabling "flush_before_completion" property or enabling FlushModeType.MANUAL, that seems the same))
Note that Seam does not flush the session, so you should always enable hibernate.transaction.flush_before_completion to ensure that the session is automatically flushed before the JTA transaction commits.http://docs.jboss.com/seam/2.0.0.GA/reference/en/html_single/#d0e5849