From: McDonald, Ira (imcdonald@sharplabs.com)
Date: Fri Apr 20 2007 - 13:25:08 EDT
Hi Rick,
Well, hypothetical capability today in Printer MIB... The conformance
macro allows 'read-only'. And I have personally never encountered
a printer that allows remote disable of the console (think about this - it
breaks service scenarios entirely). This is an edge condition.
Now, remote reset of the printer actually does make sense (via a CIM
operation of course). Although, again I don't think there are current
printers that allow remote reset via SNMP (for security reasons).
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
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: Richard_Landau@Dell.com [mailto:Richard_Landau@Dell.com]
Sent: Thursday, April 19, 2007 4:08 PM
To: McDonald, Ira; wims@pwg.org
Subject: RE: WIMS> CIM> There is one podssible candidate for EnabledLogicalElement
I was not proposing any analogous property at all, but an empty class with only the method to change the state. What I intend is having a class to represent the function of the property we don't like. And the class has a RequestStateChange() method to effect the function. And the enabled-disabled state of the class shows up in the existing EnabledState property.
This is the *last* thing I would do to the new model, after adding all the other stuff as read-only as we agreed. Or rather, the first thing of the new writable model, the pipe cleaner for putting write functions on various properties.
We have the capability (pardon the expression) today, at least in the model if not in many implementations, to disable console input. If we can model the capability in another way that does not expose a dangerous writable property, that seems like a good thing.
rick
_____
From: McDonald, Ira [mailto:imcdonald@sharplabs.com]
Sent: Thursday, April 19, 2007 15:39
To: Landau, Richard; wims@pwg.org
Subject: RE: WIMS> CIM> There is one podssible candidate for EnabledLogicalElement
Hi,
My two cents - NO - no writable properties at all - no state changing methods
defined in any Phase 2 modelling activity - drop this property entirely or show
it as a read-only boolean in CIM_Printer.
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
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: owner-wims@pwg.org [mailto:owner-wims@pwg.org]On Behalf Of Richard_Landau@Dell.com
Sent: Thursday, April 19, 2007 1:51 PM
To: Richard_Landau@Dell.com; wims@pwg.org
Subject: RE: WIMS> CIM> There is one podssible candidate for EnabledLogicalElement
Actually, I would propose calling the class ConsoleButtons or ConsoleInput. The existing function does not disable the lights or text display, only input from the buttons.
rick
_____
From: owner-wims@pwg.org [mailto:owner-wims@pwg.org] On Behalf Of Richard_Landau@Dell.com
Sent: Thursday, April 19, 2007 13:42
To: wims@pwg.org
Subject: WIMS> CIM> There is one possible candidate for EnabledLogicalElement
Console. Not ConsoleLights or ConsoleDisplayBuffer, but a class with no properties other than state so that it can be enabled and disabled. In the voting spreadsheet from eons ago, we all voted prtGeneralConsoleDisable as priority A. And there is a comment on it that says, "must be implemented as CIM state accessible by RequestStateChange() method." Who would have guessed that we had such foresight way back then.
Proposal: When we get to it, we can use this as a pipe cleaner for CIM modeling of this writable property. I think it results in an otherwise empty class derived directly from EnabledLogicalElement. No new properties, just the state properties and RequestStateChange() method inherited from the parent.
Comments?
rick
----------------------
Richard_Landau(at)dell(dot)com, Stds & System Mgt Architecture, CTO Office
+1-512-728-9023, One Dell Way, RR5-3, MS RR5-09, Round Rock, TX 78682
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