Within my even more limited and foggy understanding, I agree with Toby.
Dr. Jung, do you have a testcase to show there is a problem?
david jencks.
On 2001.08.01 17:02:49 -0400 Toby Allsopp wrote:
> On Wed, Aug 01, 2001 at 02:37:45PM +0200, Jung , Dr. Christoph wrote:
> > I just stumbled over the following piece of code in
> > org.jboss.pool.connector.BaseConnectionManager$XAListener:
>
> This XA stuff makes my head hurt, but I'll give it a go.
>
> > public void connectionClosed(ConnectionEvent evt) {
> > ...
> >
> > // XAResource is delisted
> > if(trans != null) {
> > // Delist if closing before transaction was ended
> > try {
> > trans.delistResource(xar, XAResource.TMSUCCESS);
> > } catch(SystemException e) {
> > e.printStackTrace();
> > }
> > }
> >
> > ...
> > }
> >
> >
> > which basically means that a pooled resource is marked RS_ENDED in the
> > TxCapsule after being asked to end(Xid,TMSUCCESS).
> >
> > Now imagine that the resource is returned to the pool and dispensed for
> > another time within the same persistent transaction. This means that
> > the TxCapsule, when asked to enlistResource(), will not call
> > start(Xid,TMRESUME) in order to resume the tx association.
>
> I don't follow this. TxCapsule.enlistResource calls
> TxCapsule.startResource, which will call start on the resource
> no matter what it thinks the state of the resource is. My
> reading of the code says that in the scenario you describe
> above the resource will receive a start(xid, XAResource.TMJOIN)
> call, which is fine, I think.
>
> > Wouldn�t it be correct to do a
> >
> > try {
> > trans.delistResource(xar, XAResource.TMSUSPEND);
> > } catch(SystemException e) {
> > e.printStackTrace();
> > }
> >
> > instead, which would cause the state of the resource to become
> RS_SUSPENDED
> > in the TxCapsule before returning to the pool and forcing
> > the IMHO right behaviour ...
>
> The meaning of "suspend" with regards to XA transactions is very
> unclear to me. All I've heard about it is argument (see some old
> threads on this list for example).
>
> My, admittedly limited and unclear, understanding is that TMSUCCESS
> is correct.
>
> Ole? Aaron?
>
> Toby.
>
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