[MFD] Job State Transition Diagram error

[MFD] Job State Transition Diagram error

[MFD] Job State Transition Diagram error

William Wagner wamwagner at comcast.net
Wed Jan 6 17:36:07 UTC 2010


Yes. Right now, the transition effectors are indicated by italicized general
statements (e.g., Job Completed) or citing actual operations (CreateJob).
Although it would be useful to indicate how each transition  may be effected
by an operation, that would probably render the diagram unreadable. Further,
we appear to be constantly adding more operations and now operation
attributes that affect Job State. My inclination is to replace all remaining
operation transition effectors with generic statements; e.g., HoldJob
Request becomes Job Held. The correlation between the general statements and
the transition  effectors (Operations, Processing Events,  Problem Events,
Operation Attribute enabled Events) would be dealt with elsewhere (perhaps
in the descriptions of Operations).

 

That does bring up another question.  How many more of the IPP operations
will be re-stated as  <service> Operations? I have attached (if it gets
through)  a table of IPP operations (derived from the recent IPP work)
versus MFD Operations as they now are listed, with my understanding of
correlation.  I think it best to resolve the discrepancies now.

 

Thanks,

 

Bill Wagner

 

From: mfd-bounces at pwg.org [mailto:mfd-bounces at pwg.org] On Behalf Of Zehler,
Peter
Sent: Wednesday, January 06, 2010 8:03 AM
To: mfd at pwg.org
Subject: [MFD] Job State Transition Diagram error

 

All,

 

The diagram for the Job State transition is incorrect.  

1)      The transition from Pending to PendingHeld only shows the HoldJob
event.  According to the definition of the PendingHeld state "the job is not
a candidate for processing for any number of reasons and will return to the
Pending state when the reasons are no longer present".  An example could be
an unavailable resource.

2)      The transition from Processing to ProcessingStopped says "Service
Stopped".  I believe that it should be "Job or Service Stopped".  The
commands Suspend<service>Job and Resume<service>Job cause the transitions.
A required resource or a critical fault will cause the transition to
ProcessingStopped.  The resource becoming available or clearing the critical
fault can cause the reverse transition.  The currently described Service
conditions for the transition remain valid.

 

Pete

 

 

Peter Zehler

Xerox Research Center Webster
Email: Peter.Zehler at Xerox.com
Voice: (585) 265-8755
FAX: (585) 265-7441
US Mail: Peter Zehler
Xerox Corp.
800 Phillips Rd.
M/S 128-25E
Webster NY, 14580-9701 

 


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