On Aug 14, 2009, at 11:33 AM, Manik Surtani wrote:

On 13 Aug 2009, at 19:11, Emmanuel Bernard wrote:

Infini guys, do you support transactional operation spanning several
concurrent threads?

The *same* tx on different threads? That's disallowed by the JTA spec.

A transaction can only be associated with one thread at *a moment*. However, if a thread suspends a tx and then another thread tries to resume it TM.resume - this might be allowed, depending on the used TM.

JTA specs says that "Note that sometransaction manager implementations allow a suspended transaction to

be resumed by a different thread. This feature is not required by JTA."

However, I would expect most of the TM to support this feature: think about an SFSB that has a transaction that spreads through different method calls/HTTP requests. The AS would most likely use different threads from the thread pool to process the call.

Cheers
--
Manik Surtani
manik@jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org

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