[IPP] Re: IPP JPS3 - "printer-supply[-description]" encodings

[IPP] Re: IPP JPS3 - "printer-supply[-description]" encodings

Michael Sweet msweet at apple.com
Wed Mar 30 14:41:11 UTC 2011


Pete,

You are correct, and I *think* we have this wording in the current PSX (will check - if not that is an important oversight!). Will make sure that I include the appropriate verbiage in the JPS3 spec...

Thanks!

On Mar 30, 2011, at 4:49 AM, Zehler, Peter wrote:

> It is my understanding that 1SetOf is unordered.  But rfc2911 states “Sets are normally unordered.  However each attribute description of this type may specify that the values MUST be in a certain order for that attribute.”  I assume that the description will detail the ordering including the mapping to the Printer MIB and any ordering relationship between attributes.
>  
>  
> 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.
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>  
> From: ipp-bounces at pwg.org [mailto:ipp-bounces at pwg.org] On Behalf Of Michael Sweet
> Sent: Tuesday, March 29, 2011 5:19 PM
> To: Ira McDonald
> Cc: ipp at pwg.org
> Subject: [IPP] Re: IPP JPS3 - "printer-supply[-description]" encodings
>  
> Ira,
>  
> I'm working on getting this text into a new rev of the JPS3 specification. Some comments below...
>  
> On Mar 28, 2011, at 7:55 PM, Ira McDonald wrote:
> ...
> (3) prtMarkerSuppliesColorantIndex is omitted in "printer-supply"
> because it is redundant with prtMarkerColorantIndex for the rows that
> include colorant information.
>  
> Do we even need the colorantIndex from the prtMarkerColorant table? Seems like unnecessary information that will never get used in this composite view of the two tables...
>  
> Same for Index - we implicitly already have it (1setOf is ordered) so why include it?
>  
> MaxCapacity should be REQUIRED since otherwise how do you interpret Level?
>  
> Finally, I would make at least the colorant Value conditionally required, otherwise the data can't be represented properly in UI.
>  
> 
>                 Table 6 - Keywords for printer-supply
> 
> SNMP Supply Object      IPP Datatype    IPP Keyword         Conformance
> ------------------      ------------    -----------         -----------
> prtMarkerSupplies...
> Index (note 1)          Integer         index               RECOMMENDED
> MarkerIndex (note 2)    Integer         markerindex         OPTIONAL
> ColorantIndex (note 3)  Integer         ---                 ---
> Class                   String          class               RECOMMENDED
> Type                    String          type                REQUIRED
> SupplyUnit              String          unit                RECOMMENDED
> MaxCapacity             Integer         maxcapacity         RECOMMENDED
> Level                   Integer         level               REQUIRED
> 
> prtMarkerColorant...
> Index                   Integer         colorantindex       OPTIONAL
> Role                    String          colorantrole        OPTIONAL
> Value                   String          colorantname        OPTIONAL
> Tonality                Integer         coloranttonality    OPTIONAL
>  
> __________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
>  
> 
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________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair


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