PS> FW: WBMM> Bug in PSI UnsupportedElements return

PS> FW: WBMM> Bug in PSI UnsupportedElements return

McDonald, Ira imcdonald at sharplabs.com
Fri May 14 11:40:01 EDT 2004


Oops - I sent to wrong address for PSI list.

Cheers,
- Ira

Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221  Grand Marais, MI  49839
phone: +1-906-494-2434
email: imcdonald at sharplabs.com

-----Original Message-----
From: McDonald, Ira [mailto:imcdonald at sharplabs.com]
Sent: Thursday, May 13, 2004 11:08 AM
To: 'psi at pwg.org'; 'wbmm at pwg.org'
Cc: 'HALL,DAVID (HP-Vancouver,ex1)'; 'BERKEMA,ALAN C
(HP-Roseville,ex1)'; 'Masanori ITOH'
Subject: WBMM> Bug in PSI UnsupportedElements return
Importance: High


Hi,

[Background - WIMS folks want to include UnsupportedElements
in the returns from most of their Operations and Actions - so 
we reviewed the PSI definition yesterday afternoon.]

PSI has the OPPOSITE behavior for elements which ARE supported
but have been supplied by the client with an unsupported VALUE.
PSI returns the element with the _new_ substituted value.

But - IPP/1.1 and the PWG Semantic Model/1.0 UnsupportedElements
return the element with the _old_ unsupported value (perhaps more
sensible, but less useful to the client).

Pete Zehler was on the WIMS telecon yesterday and agrees that
we should _fix_ this bug in PSI (because it's impossible to
write a print service gateway between the two different
behaviors).


WIMS folks also decided to define a second SubstitutedElements
return that has the _new_ value for client convenience (the
present mistaken behavior in PSI UnsupportedElements).

Cheers,
- Ira


Ira McDonald (Musician / Software Architect)
Blue Roof Music / High North Inc
PO Box 221  Grand Marais, MI  49839
phone: +1-906-494-2434
email: imcdonald at sharplabs.com



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