TransactionalSeamPhaseListener

[xmas_spirit]

i have some stupid questions regarding TransactionalSeamPhaseListener:

1/ how can i customize the transaction created with this listener?
for example timeout / isolation...

2/ how can i disable it for some pages?

3/ what's the point of opening a second transaction?

and yes i did read the docs (also the book), but still don't get it :)

[christian.bauer]

1) Subclass and customize

2) You can't (that is good, there is no overhead if no transactional resources are used)

3) Committing after INVOKE APPLICATION and opening a second transaction in RENDER RESPONSE (which usually only reads data) keeps locks in the database, created from inserts, updates, and deletes during INVOKE APPLICATION, as short as possible

[xmas_spirit]

3/ ok, i know why do you commit the first one, but do you need a transaction to read data?

[christian.bauer]

Of course, why wouldn't you?

http://www.hibernate.org/Documentation/NonTransactionalDataAccessAndTheAutoCommitMode

[xmas_spirit]

ok, tnx... but one more:
2/ what if i have to call a session bean method annotated with @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)