Hi,
For PSI to advance, the Events spec (psievents10) and the Events
schema MUST be formally approved for addition to the next version
of the Semantic Model.
Because there is no such thing as a Resource or a _Subscription_
defined in any standards-track IETF or PWG approved spec,
there CANNOT be any Resource operations or events in WIMS.
And more cogently, there CANNOT be any Subscription object
defined in the Alert schema (so there is no source for the element
bindings of most Alert types). So RegisterForAlerts doesn't work.
This just gets worse...
----
The PWG Semantic Model element PrinterOperationsSupported
ONLY contains the base IPP/1.1 operations. There is no obvious
way that it could easily be extended to cover all PSI operations,
WIMS operations, etc.
And arguably, the PWG SM/1.0 Printer object should NOT be
the source of any WIMS connection. The abstract System or
Service object in front of Printer should start WIMS connections.
Near-term the WIMS Agent should NOT be conflated with Printer.
----
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221 Grand Marais, MI 49839
phone: +1-906-494-2434
email: imcdonald at sharplabs.com
-----Original Message-----
From: Zehler, Peter [mailto:PZehler at crt.xerox.com]
Sent: Wednesday, June 02, 2004 2:36 PM
To: McDonald, Ira
Cc: 'wbmm at pwg.org'; 'Wagner,William'
Subject: RE: WBMM> Re: Need quick decisions on schema changes
Ira,
Harry covered my views. My inserts are only on 7 & 8.
Peter Zehler
XEROX
Xerox Innovation Group
Email: PZehler at crt.xerox.com
Voice: (585) 265-8755
FAX: (585) 422-7961
US Mail: Peter Zehler
Xerox Corp.
800 Phillips Rd.
M/S 128-25E
Webster NY, 14580-9701
-----Original Message-----
From: Harry Lewis [mailto:harryl at us.ibm.com]
Sent: Wednesday, June 02, 2004 1:57 PM
To: McDonald, Ira
Cc: 'wbmm at pwg.org'; 'Wagner,William'
Subject: WBMM> Re: Need quick decisions on schema changes
Inserted...
----------------------------------------------
Harry Lewis
Chairman - IEEE-ISTO Printer Working Group
http://www.pwg.org
IBM Printing Systems
http://www.ibm.com/printers
303-924-5337
----------------------------------------------
"McDonald, Ira" <imcdonald at sharplabs.com>
06/02/2004 11:47 AM
To
"'wbmm at pwg.org'" <wbmm at pwg.org>
cc
"'Wagner,William'" <WWagner at NetSilicon.com>, Harry Lewis/Boulder/IBM at IBMUS
Subject
Need quick decisions on schema changes
Hi,
PLEASE answer quickly with your opinions on edits below,
so I can begin the edits needed in all of the WIMS schema
after last week's PWG Vancouver meetings.
Last week, we reduced the scope of the PWG Std Events spec
and Events schema to Printer-only (Printer, Job, Document,
and Subunit). Fine, but...
(1) Alerts schema - Should I delete 'AlertResource'?
- it depended on the now _deleted_ ResourceXxx events
in the Events schema and Resource object in the
(abandoned) Imaging System Model draft
HL - Yes, for now... but we need to put these back in later
(2) Alerts schema - Should I change 'NotifySourceState'
to delete 'Testing' and 'Down' from 'hrDeviceStatus'
in Host Resources MIB (RFC 2790)?
- this change will make support of coherent Printer
state harder to harmonize with HR MIB
- I think that it's a bug that Printer state in IPP/1.1
requires state reasons to report Down or Testing
HL - No
(3) Alerts schema - Should I rename 'NotifySourceState'
to 'NotifyPrinterState' and 'NotifySourceURI' to
'NotifyPrinterURI'?
- doing so effectively closes the future possibility
of multifunction alert support in WIMS
HL - No!
(4) Resource schema - Should we abandon this schema?
- last week's meeting seemed against adding any
new objects except in some future PWG MFP Model
- abandoning Resources seems foolish to me
HL - Seems foolish to me too. Don't like the word abandon. Prefer
"staging"
(5) Schedule schema - Should I reorganize it into
the three Monitoring, Management, and Admin groups
of Actions?
- this seems worthwhile, as it describes WIMS levels
better
HL - Yes
(6) Schedule schema - Should I delete Resource actions?
- Does WIMS WG accept the need to model Resource?
HL - No (Yes... but possibly at a later "stage")
(7) Schedule schema - Should I import 'NotifyEvents' from
the Events schema?
- this looks better, but again loses Resources
HL - Not sure... why does this loose Resources... because event schema
requirments are being driven by PSI? Seems incorrect.
<PZ>I don't understand this one either</PZ>
(8) Schedule schema - Should I add the elements for
Supported[Operations|Actions|Objects] here, so
that RegisterForManagement operation works?
- the WIMS operations won't appear in any generic
PWG Semantic Model element in the forseeable future
HL - why do you say the WIMS ops won't appear in SM? Do you mean just the
admin related Ops?
<PZ>This would seem to be a straight forward extension and could
be added to the Schema easily, captured as a Semantic Model extension and
picked up in the next version of the PWG Semantic Model spec</PZ>
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221 Grand Marais, MI 49839
phone: +1-906-494-2434
email: imcdonald at sharplabs.com
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