On Sun, May 06, 2001 at 09:35:43AM -0400, David Jencks wrote:
> Hi,
> I'm confused. Are you saying that the behavior mandated by the JCA spec is
> not sufficient to guarantee that every connection handle will used in the
> correct transaction? If so, is this not a deficiency in the spec? If not,
> what is the JBossConnectionListener for more specifically?
JBossConnectionListener is part of the contract between JBossCX and a
connection manager, such as those provided by Minerva. This contract is
not part of the JCA spec because it is considered part of the application
server.
Toby.
> thanks
> David Jencks
>
> On 2001.05.05 23:51:29 -0400 Toby Allsopp wrote:
> > danch wrote:
> >
> > > Does anyone have opinions on whether this would be a good feature or
> > > not? The 1.1 spec does not specify how isolation levels should be
> > > handled, except for BMT session beans, and by saying/implying that
> > beans
> > > can call resource manager specific APIs to set it themselves
> > (carefully).
> > >
> > > If this seems like a good idea, should this setting be in jboss.xml
> > (and
> > > cover BMP and CMP entities as well as sessions), or in jaws.xml
> > > (covering _only_ CMP entities, since others are free to call the
> > > resource manager's APIs)?
> >
> > What do mean by "cover BMP and CMP entities as well as sessions"? This
> > can only apply to JDBC connections, right? Do you propose to set the
> > isolation level when a connection handle is obtained by the bean? If
> > so, this should probably be implemented using the same mechanism I have
> > in mind to implement beans hanging onto connection handles across
> > transactions.
> >
> > JBossCX defines the JBossConnectionListener interface for this purpose,
> > although it is not currently used. The idea is that when a resource
> > adapter gives out a connection handle, the app server is notified so
> > that it can make sure it is participating in the correct transaction.
> > It would be easy to extend that to any transaction-specific setup we
> > wanted to do.
> >
> > Toby.
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