PS> REST version of PSI

PS> REST version of PSI

Harry Lewis harryl at us.ibm.com
Mon Jan 8 18:34:00 EST 2007


Ira, thanks for your thoughts on REST/SOAP with PSI. 
My main focus is on obtaining job status from a server that already has a 
list of jobs and their state so I'm not really exercising PSI at it's 
fullest 
---------------------------------------------- 
Harry Lewis 
IBM STSM
Chairman - IEEE-ISTO Printer Working Group
http://www.pwg.org
IBM Printing Systems 
http://www.ibm.com/printers
303-924-5337
---------------------------------------------- 



"McDonald, Ira" <imcdonald at sharplabs.com> 
01/08/2007 03:50 PM

To
Harry Lewis/Boulder/IBM at IBMUS, ps at pwg.org
cc

Subject
RE: PS> REST version of PSI






Hi Harry,
 
A quick few thoughts.
 
PSI is NOT at all SOAP-specific (the WSDL could easily
generate pure HTTP bindings), but PSI is RPC-style and
stateful (like all IETF, PWG, and vendor print protocols),
which is the exact opposite of REST.
 
>From my reading of REST descriptions, it appears REST
is verb-poor and noun-rich and stateless.  Neither PSI,
nor any other real print protocol is stateless - and I can't
imagine any easy transform to get there (or why you'd
want to).
 
Since there is consistency in available descriptions of
REST, designing RESTful applications seems to be a
statement in the eye of the beholder.
 
Would you care to expand on the reason for your
question?
 
Cheers,
- Ira
 
Ira McDonald (Musician / Software Architect)
Chair - FSG Open Printing Steering Committee
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: owner-ps at pwg.org [mailto:owner-ps at pwg.org]On Behalf Of Harry Lewis
Sent: Monday, January 08, 2007 1:15 PM
To: ps at pwg.org
Subject: PS> REST version of PSI 


Is PSI so SOAP specific that a REST version would be out of the question? 
What basic steps are needed to migrate PSI from SOAP to REST? 
---------------------------------------------- 
Harry Lewis 
IBM STSM
Chairman - IEEE-ISTO Printer Working Group
http://www.pwg.org
IBM Printing Systems 
http://www.ibm.com/printers
303-924-5337
---------------------------------------------- 

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