[Cloud] "Support Levels" for the SM2.0/PWG:PJT

[Cloud] "Support Levels" for the SM2.0/PWG:PJT

[Cloud] "Support Levels" for the SM2.0/PWG:PJT

Petrie, Glen glen.petrie at eitc.epson.com
Wed Feb 13 18:29:20 UTC 2013


All 

 

I was asked to provide a set of (call them) support levels for the
SM2.0/PWG:PJT.   I have completed the top level objects and would like
feed back on my proposal levels.

 

All of my documentation is done as C-Code for now.   [For BJSON, JSON,
XML or whatever, as you will see later, my code contains a "def" struct
for each element/attribute/value which are used for converting internal
binary (struct) data.]

 

 

Wording for Support Levels:

 

The Print Job Ticket (PJT) consist of a rich set of printing objects,
attributes, elements and values that support the simplest level of
printing to most complex.  It supports printing from/in embedded,
mobile, home-office, business office and production environments.
However, requiring all Applications and Print Clients in the various
environments to support the complete set of PWG: PJT objects, elements,
attributes and values would be a burden.   While a Print Service only
needs to provide capability information that is supports; currently, a
Print Client must support all PWG:PJT objects, elements, attributes and
values that any Print Service could potentially provide as a capability;
this is just not practical in all situations and environments.   This
section provides a solution by defining several Support Levels that a
Print Client can advertise to Print Services.         

 

An individual Support Level consist of proper subset of the complete set
of PWG:PJT objects, elements, attributes and values.  Currently, there
are three Support Levels.   The first level represent "Simple" printing
needs, the second level supports nominal/typical office printing and,
the third level, represent the full PWG:PJT specification. 

 


Any Print Client or Print Service may elect to implement (advertise and
comply to) one of the SM2.0/PWG:PJT Support Levels.  When a Print Client
or Print Service declares implementation of a Support Level, the Print
Client or Print Service MUST be capable of supporting all objects,
elements, attributes and values for that Support Level.  If a Print
Client does not declare a specific Support Level implementation, the
Print Client SHALL have an assumed Support Level of the most
encompassing (all objects, elements, attributes and values) Support
Level. 

 

A Print Client MAY advertise to a End-User an object, element, attribute
and/or value at a higher Support Level only if the Print Client directly
supports that object, element, attribute and/or value.  

 

For example, a Print Client at Support Level 1 MAY advertise "Front
Cover" support (a Support Level 2 element); but, the Print Client MUST
provide all internal implementation to support a Front Cover.   This is
analogous to Print Service with no Front Cover capability but with Print
Client support. 

 

A Print Service MUST NOT provide capability data or Print Job Ticket at
the Support Level above that of the Print Client.   The Print Client MAY
either:

i)                   Reject the Print Job Ticket in it entirety, or

ii)                 Reject the Print Job Ticket for unsupported
MUST_HONOR elements, or

iii)               Ignore the unsupported object, element, attribute
and/or value.

 

Please review info at 

ftp://ftp.pwg.org/pub/pwg/mfd/white/Proposed.PWG.PJT.Support.Level-2013.
02.13.zip 

 

(did not mean to put the last one in cloud directory)

 

glen

 

 


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