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Subject: Interoperability question?
- From: "Gemmill, Craig" <craig.gemmill@tridium.com>
- To: <obix@lists.oasis-open.org>
- Date: Thu, 1 Jul 2010 12:20:48 -0400
Hi
everyone-
Regarding the "list
of interoperability issues", here is an interoperability question that has come up
recently.
Scenario:A client
creates a watch on the server, then begins polling it for changes. Then at
some point, the point being watched is removed from the server. Should the
server then provide some indication to the client in the next pollChanges() that
this point no longer exists?
If so, what form
should that indication take?
My inclination would
be that this would be important information for the client to have, because
otherwise it will continue thinking that the point is still holding the original
value, which is no longer a valid assumption given that the point does not
exist. But, the format of this indication would need to be defined I
think, since "point removal" indications could easily be interspersed with
regular point value updates.
Craig
Maybe we should
create a list on the TC site that tracks these issues? Or maybe just add
each one as a separate oasis issue? Toby, what would work best from a
documentation standpoint?
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