Last week at the PWG Process telecon, I mentioned our
discovery that there are four methods in PSI/1.0
that reference the 'NotifyEvents' element (a member
of the Subscription object) in the PWG Semantic Model.
But, the Semantic Model has no IETF or PWG working draft
content in it, including the former IPP Notifications
There are three alternatives (we decided on the third):
(1) - Delete the PS's response parameter from
RegisterTargetDevice for subscription to events;
- Delete the Send[Printer|Job|Document]Notification
[lost functionality in PSI/1.0 spec]
(2) - Advance the entire IPP Notifications spec with
the complex semantics of the Subscription and
Notification objects to become a IEEE/ISTO PWG
- Revise PWG Semantic Model to include these objects;
[probably one calendar year - stalls PSI/1.0 spec]
(3) - Develop a PWG Events schema that defines
'NotifyEvents' as a union of 'PrinterEvents',
'JobEvents', and 'DocumentEvents'
(consider adding fine-grained events from
Printer MIB alert list at the same time)
- Develop an IEEE/ISTO PWG Standard Event Names
- Revise PSI/1.0 to reference the Events schema
to be added to PWG Semantic Model/1.1
[hopefully 3 to 6 months]
WBMM has an immediate and pressing need for this same
'NotifyEvents' element for their existing Action
'SubscribeForAlerts' and their existing operation
'SendAlert' (needs in-progress Alert schema).
I volunteer to create this Events schema and (with help
from someone MS Word literate) write the working draft
for the companion PWG Standard Event Names spec.
Alan - you may wish to schedule some Tuesday PSI telecons
to review and advance this work. Bill Wagner agreed that
we should also spend WBMM telecon time, but we have a lot
of other (unrelated) new WBMM content to work on too.
Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221 Grand Marais, MI 49839
email: imcdonald at sharplabs.com