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, - IraIra McDonald (Musician / Software Architect) Blue Roof Music / High North Inc PO Box 221 Grand Marais, MI 49839 phone: +1-906-494-2434 email: imcdonald@sharplabs.com
-----Original Message----- From: Zehler, Peter [mailto:PZehler@crt.xerox.com] Sent: Wednesday, June 02, 2004 2:36 PM To: McDonald, Ira Cc: 'wbmm@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@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@us.ibm.com] Sent: Wednesday, June 02, 2004 1:57 PM To: McDonald, Ira Cc: 'wbmm@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@sharplabs.com>
06/02/2004 11:47 AM
To
"'wbmm@pwg.org'" <wbmm@pwg.org>
cc
"'Wagner,William'" <WWagner@NetSilicon.com>, Harry Lewis/Boulder/IBM@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@sharplabs.com
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