Re: [Springframework-developer] Spring JTA synchronization in a remote transaction propagation scenario

[<jue...@we...>]

Actually, there seems to be a pretty straightforward solution: I've =
added a check whether there is a SessionHolder bound to the current =
thread, only invoking "unbindResource" if found. Else, the SessionHolder =
is simply left bound to the thread: It's empty anyway, as the =
synchronization code will have removed and closed the transactional =
Session. The next data access operation on that thread will simply reuse =
the same SessionHolder, adding a new Hibernate Session to it.
=20
I've attached a refined version of SessionFactoryUtils.java to the JIRA =
issue.

Juergen
=20

________________________________

Von: spr...@li... im Auftrag =
von j=FCrgen h=F6ller [werk3AT]
Gesendet: Do 09.12.2004 10:45
An: spr...@li...
Betreff: [Springframework-developer] Spring JTA synchronization in a =
remote transaction propagation scenario



Does someone have experience with using Spring's JTA synchronization, in =
particular the Hibernate Session synchronization, in a remote =
transaction propagation scenario? That is, one server starts and ends =
the transaction but the actual data access happens on other servers that =
participate in the transaction.

The problem is that the synchronization callbacks get executed on each =
server, but in a different thread than the one that performed the data =
access (triggered by JTA commit, which sends a remote call to each =
participating server to execute the synchronizations). So Spring's =
synchronization implementation can't find the thread-bound Hibernate =
Session anymore, which leads to an IllegalStateException.

Have a look at the corresponding JIRA issue:

http://opensource.atlassian.com/projects/spring/browse/SPR-532

Any input is greatly appreciated!

Juergen


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