[MFD] High North has reviewed the System Object and System Control Service and has comments

[MFD] High North has reviewed the System Object and System Control Service and has comments

[MFD] High North has reviewed the System Object and System Control Service and has comments

Ira McDonald blueroofmusic at gmail.com
Tue Nov 29 23:16:58 UTC 2011


Hi,                                           Tuesday (29 November 2011)

High North has reviewed the System Object and System Control Service and
has comments.

These comments augment the Apple comments and try to avoid overlap.

Cheers,
- Ira

------------------------------------------------------------------------

     [Comments on "wd-mfdsystemcontrolservicemodel10-20111102.pdf"]

Global - fix title of MFD Model [PWG5108.1]
- several different unrelated titles are used for [PWG5108.1],
  for example on lines 260-261.

Global - case of "subunit" versus "Subunit"
- inconsistent capitalization of singular and plural "subunit"
  throughout this document
- my preference would be titlecase throughout (per MFD Model)

Global - terminology - clarity
- change "Client" to "System Client"
  (too ambiguous otherwise, with respective to Job service clients)

Line 14 - typo
- change "[PWG51008.1]" to "[PWG5108.1]"

Line 16 - typo
- change "by n MFD." to "by an MFD."

Line 17 - clarify
- change "The model extension"
  to "The [PWG5108.1] model extension"

Line 22 - clarify
- change "Alert Table" to "prtAlertTable"

Line 22 - typo
- change "visible to any" to "visible via any"

Line 23 - clarify
- change "Imaging Device wide usage counters, all the conditions, and
  every Subunits."
  to "Imaging Device total usage counters, all conditions, and all
  Subunits."

Line 25-26 - clarify
- change "to start services that have been shut down."
  to "to start (create) services and to restart services that have been
  previously shut down."

Line 181 - scope error
- change "System Object's capabilities, configuration,"
  to "System Object's configuration,"

Line 182 - missing word
- change "to modify System Object's data."
  to "to modify the System Object's data."

Line 188 - case error
- change "Network Connected System Client"
  to "network-connected System Client"

Line 189 - typo
- change "services that protects"
  to "services that protect"

Line 190 - clarify
- change "access of" to "access to the"

Line 198 - missing term
- define "System Client" (used in section 2, 4.1, 8.1, etc.)
  (simply using "Client" is far too ambiguous in this spec)

Line 200 - clarify
- change "this Specification"
  to "System Object and System Control Service"

Line 203 - clarify
- change "for the Imaging Device System."
  to "the SystemControlService of the Imaging Device."

Line 208 - clarify
- change "this Specification"
  to "System Object and System Control Service"

Line 211 - broken reference
- change "The MFD Working Group charter [CHAR] defines the following as
  out-of-scope:"
  to "The following are out-of-scope:"
  (MFD charter is out-of-date and should NOT be referenced in a PWG CS)
  (it's also missing in current Informative References section)

Line 217 - clarify
- change "top level objects"
  to "top level elements"
  (SystemStatus is NOT an object - it's an element group)

Line 217-220 - clarify
- rewrite these sentences to stop confusing object w/ element group

Line 236 - clarify
- change "System Model Overview"
  to "Imaging Device Model"
  (title disagrees with first sentence)

Line 240 - clarify
- change "SystemControlService Clients"
  to "System Clients"
  (the formal term for conformance)

Line 244 - clarify
- change "there is only a single instance."
  to "there can only be a single instance."

Line 245 - clarify
- change "no jobs coming in or output produced and no subordinate"
  to "no Jobs coming in or output produced and therefore no subordinate"

Line 246 - clarify
- change "entire system" to "entire Imaging Device"

Line 258 - clarify
- change "all the subunits that comprise"
  to "all the subunits configured on"
  (the subunits, by themselves, do NOT comprise the Imaging Device)

Line 267 - typo
- change "provide descriptive" to "provides descriptive"

Line 270 - typo
- change "has extension" to "has an extension"

Line 281-283 - clarify
- add complete table of rules for "optimistic" Service state rollup
  (explain that non-Job services like Resource don't participate)
  (overlaps w/ Apple comment - but this has to be interoperable)

Line 288 - typo
- change "2lists" to "2 lists"

Line 293 - ambiguous element name
- change "ServiceInstance" to "ServiceSummary"
  (consistent with "ResourceSummary")
  (the actual service instances are in the Services container)
  (also line 416 now uses "ServiceSummary")

Line 296 - clarify
- change "SystemControlService Theory of Operation"
  to "SystemControlService Model"

Line 297 - redundancy
- change "Imaging Device System" to "Imaging Device"

Line 298 - typo
- change "SystemControlService model" to "SystemControlService models"

Line 301 - clarify
- change "comprise" to "are configured on"
  (the subunits, by themselves, do NOT comprise the Imaging Device)

Line 304 - typo
- change "has extension" to "has an extension"

Line 309 - model error in Figure 6
- change SystemControlServiceDescription to REQUIRED
  (otherwise there is no language or charset for Status values)

Line 312 - typo
- change "provide Descriptive" to "provides descriptive"

Line 315 - typo
- change "has extension" to "has an extension"

Line 327 - typo
- change "provide state" to "provides state"

Line 338 - clarify
- change "SystemControlService Interfaces"
  to "SystemControlService Operations"

Line 339 - clarify
- change "provides a set of service interfaces"
  to "provides a service interface"
  (one interface - multiple operations - in formal model terminology)

Line 376 - clarify
- change "can no longer be instantiated."
  to "can no longer be restarted."
  (delete removes the instance itself)

Line 382 - typo
- change "State element." to "State elements."

Line 387 - typo
- change "State element." to "State elements."

Line 394 - punctuation
- add missing period

Line 400 - punctuation
- delete extra period after "InputChannelInterface"

Line 401 - punctuation
- delete extra period after "Marker)"

Line 417 - typo
- change "the service's" to "for the service's"

Line 423 - clarify
- change "transition the" to "transition each"

Line 424 - clarify
- add "This operation does not affect the SystemControlService."
  (appears in ResumeAllServices)

Line 430 - clarify
- change "transition the" to "transition each"

Line 467 - clarify
- change "transitions every job based Services"
  to "transitions every job based Service"

Line 468 - clarify
- move "This operation does not affect the SystemControlService."
  to end-of-paragraph (it's an odd infix at present)

Line 533 - clarify
- change "Client Conformance Requirements"
  to "System Client Conformance Requirements"

Line 534-576 - clarify
- reorder lists - MUST, then SHOULD, then MAY requirements

Line 539 - clarify (w/ list reorder above)
- change "When sending a request, a conforming client NEED NOT supply"
  to "A conforming client MAY supply"

Line 540 - bogus conformance (w/ list reorder above)
- change "OPTIONALLY supplied" to "OPTIONAL to supply"

Line 544 - clarify (w/ list reorder above)
- change "client implementation" to "conforming client implementation"
- change "inter-operate" to "interoperate" (one word)

Line 549, 552, 560, 569 - clarify
- change "conforming implementations" to
  "conforming Imaging Device and SystemControlService implementations"

------------------------------------------------------------------------

Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Secretary - IEEE-ISTO Printer Working Group
Co-Chair - IEEE-ISTO PWG IPP WG
Co-Chair - TCG Trusted Mobility Solutions WG
Chair - TCG Embedded Systems Hardcopy SG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
http://sites.google.com/site/blueroofmusic
http://sites.google.com/site/highnorthinc
mailto:blueroofmusic at gmail.com
Winter  579 Park Place  Saline, MI  48176  734-944-0094
Summer  PO Box 221  Grand Marais, MI 49839  906-494-2434

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