Extending JpaTransactionManager with private inner class JpaTransactionObject

[dhchen]

Hello,

I would like to extend JpaTransactionManager , making it running extra sql in doBegin(), doCommit(), doRollBack() method, but I encounter problems because JpaTransactionObject used in JpaTransactionManager is a private inner class. The extending class cannot see the existence of JpaTransactionObject, thus I cannot get EntityManager in doBegin(), doCommit(), doRollBack().

Is there any ways extending JpaTransactionManager besides making JpaTransactionObject protected and recompile my own spring-orm.jar?

[chelu]

You can get the EntityManager just after doBegin() with

	EntityManagerHolder emHolder = (EntityManagerHolder)
				TransactionSynchronizationManager.getResource(getEntityManagerFactory());

But, as transaction begin, prepare and cleanup is delegated to a JpaDialect strategy, you could extends DefaultJpaDialect (or subclasses) and configure JpaTransactionManger with it.

Cheers

[dhchen]

You can get the EntityManager just after doBegin() with

	EntityManagerHolder emHolder = (EntityManagerHolder)
				TransactionSynchronizationManager.getResource(getEntityManagerFactory());

But, as transaction begin, prepare and cleanup is delegated to a JpaDialect strategy, you could extends DefaultJpaDialect (or subclasses) and configure JpaTransactionManger with it.

Cheers

Thank you for the reply. After examing the source code I found that implement this in TransactionManager seems to be a better way, since I cannot get EntityManagerHolder in JpaDialect's cleanupTransaction()

Another question: Is there any ways of injecting outside data into TransactionManager? My "extra sql" needs some web site information (username logged in and application name for example) to construct the sql string...