[IPP] Finishings 2.1 : mapping "finSupplyDescription" into IPP? Alternatives to consider

[IPP] Finishings 2.1 : mapping "finSupplyDescription" into IPP? Alternatives to consider

[IPP] Finishings 2.1 : mapping "finSupplyDescription" into IPP? Alternatives to consider

Kennedy, Smith (Wireless Architect) smith.kennedy at hp.com
Mon Oct 17 22:10:50 UTC 2016


Thanks Ira! 

I'll also add that to my list of stuff to be covered in the "PWG & IPP Design Principles and Ethos" whitepaper (whenever we get to that...).

Smith



> On Oct 17, 2016, at 4:05 PM, Ira McDonald <blueroofmusic at gmail.com> wrote:
> 
> Hi Smith,
> 
> 
> This is NOT a choice.  If you want the localized description, then
> it MUST be in a separate IPP attribute (like existing mappings
> for Alert, Input, Output, etc. from Printer/Finisher MIB).
> 
> This is not just a style issue.  This is a strict IPP requirement that
> a given attribute is either completely a localized IPP datatype (text) 
> or is not localized (octetString).
> 
> Prior art in MIB to IPP mapping had a good reason.
> 
> Cheers,
> - Ira
> 
> 
> Ira McDonald (Musician / Software Architect)
> Co-Chair - TCG Trusted Mobility Solutions WG
> Chair - Linux Foundation Open Printing WG
> Secretary - IEEE-ISTO Printer Working Group
> Co-Chair - IEEE-ISTO PWG Internet Printing Protocol WG
> IETF Designated Expert - IPP & Printer MIB
> Blue Roof Music / High North Inc
> http://sites.google.com/site/blueroofmusic <http://sites.google.com/site/blueroofmusic>
> http://sites.google.com/site/highnorthinc <http://sites.google.com/site/highnorthinc>
> mailto: blueroofmusic at gmail.com <mailto:blueroofmusic at gmail.com>
> Jan-April: 579 Park Place  Saline, MI  48176  734-944-0094
> May-Dec: PO Box 221  Grand Marais, MI 49839  906-494-2434
> 
> 
> On Mon, Oct 17, 2016 at 3:56 PM, Kennedy, Smith (Wireless Architect) <smith.kennedy at hp.com <mailto:smith.kennedy at hp.com>> wrote:
> Hi there,
> 
> As you may have noticed in the most recent draft of Finishing 2.1, Ira and I added a new "printer-finisher-supplies" attribute to convey information about finisher supplies, which was absent before. It is structurally similar to "printer-finisher" but contains mappings from "finSupplyTable" / "finSupplyEntry" rather than "finDeviceTable" / "finDeviceEntry".
> 
> But one of the fields that we added in that first draft was a field for "finSupplyDescription". This is inconsistent with how we support "finDeviceDescription" in 5100.1 - that OID from RFC 3806 is conveyed in IPP via  a separate IPP attribute "printer-finisher-description 1setOf text(MAX))". The difference seems to be that the key/value pairs in "printer-finisher" are non-localized, whereas "finDeviceDescription" is a localized string, so "printer-finisher-description" contains localized strings. But this strikes me as odd - we have "printer-strings-supported" now, which could contain localized strings that don't have to be conveyed via IPP attribute values directly.
> 
> So, how to support "finSupplyDescription"? There are 3 different ways I can imagine:
> 
> 1. Keep the mapping of "finSupplyDescription" in "printer-finisher-supplies", and embed a localized string within the value of "printer-finisher-supplies"?
> 
> 2. Keep the mapping of "finSupplyDescription" in "printer-finisher-supplies", but have the value be a key into a string in the string catalog pointed to by "printer-strings-uri"?
> 
> 3. Remove the mapping of "finSupplyDescription" from "printer-finisher-supplies" and instead be consistent with "printer-finisher" / "printer-finisher-description" by creating a new "printer-finisher-supplies-description" attribute that is syntactically nearly identical to "printer-finisher-description".
> 
> In this next draft I will do #3 because I can copy / paste quite easily. But I'm not confident that is the right choice.
> 
> Thoughts?
> 
> Smith
> 
> /**
>     Smith Kennedy
>     Wireless Architect - Client Software - IPG-PPS
>     Standards - IEEE ISTO PWG / Bluetooth SIG / Wi-Fi Alliance / NFC Forum / USB IF
>     Chair, IEEE ISTO Printer Working Group
>     HP Inc.
> */
> 
> 
> 
> 
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