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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mike,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>As I indicated, this was a draft for discussion. I am not particularly convinced that I like all of these descriptions.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>But, as I indicated in my comments to the proposed introduction, I am uncomfortable with the notion of the semantic model defining an interface to an ‘Output Device’ which does not contain a Print Service. By my understanding, the Semantic Model defines the interface between a Client function and a logical imaging Service. I would extend that to say that something that accepts that interface IS an imaging service. By saying that an Output Device (which I understand to represent a physical entity equivalent to a Print Device) does not contain a Print Service is contrary to the MFD Model spec definition (which, I admit, I wrote.) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Even by my understanding of RFC 2911 (which is less clear after 14 or so years), IPP deals with the interface between client software (including a client component within a print server) and an IPP Printer (which may or may not be contained in an Output Device. ) Granted, the RFC also indicated that IPP may or may not be used between an IPP Printer (a logical entity) and an Output Device (a physical entity, I think). But the software component in the Output Device is not named, and therefore suggests a confusing logical to hardware interface.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>At any rate, since I am thinking about the MFD Model spec update, I would like to get this issue resolved to consensus.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Bill Wagner<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Michael Sweet [mailto:msweet@apple.com] <br><b>Sent:</b> Monday, April 01, 2013 11:36 AM<br><b>To:</b> William A Wagner<br><b>Cc:</b> cloud@pwg.org<br><b>Subject:</b> Re: [Cloud] Cloud Print Manager Operations<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Bill,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On 2013-04-01, at 10:53 AM, William A Wagner <<a href="mailto:wamwagner@comcast.net">wamwagner@comcast.net</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I have posted a discussion draft of the new operations for the Cloud Print Manager to Cloud Print Service interface. These are based on Pete’s original suggestions as modified in our December face-to-face, and I suggest that the minutes to the meeting be referred to in considering this draft. I see some differences relative to the IPP SIX draft Mike posted last week…so these should be resolved. Mike may have developed the ideas further since the December meeting.<o:p></o:p></span></p></div></div></blockquote><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>So WRT the list of CPM operations, I *did* tweak some things relative to the current Cloud Print Requirements and Model:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>1. GetFetchablePrintJobs in SM is just Get-Jobs+which-jobs="fetchable" in IPP; this is consistent with how Get<foo><service>Jobs is mapped in MFD Common.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>2. UpdatePrintServiceState in SM became Update-Output-Device-State in IPP; this is because the Manager is updating the state of the Output Device, not of the Print Service (the Print Service provides a roll-up/combined state)<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>3. Added new Get/Set-Output-Device-Attributes IPP operation to query and provide capabilities and descriptive attributes of the Output Device.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>4. Added a new Acknowledge-Identify-Printer IPP operation to relay Identify-Printer requests from the Client to the Manager.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>5. UpdateFetchableJobs is currently called Reset-Fetchable-Jobs in IPP, although I am fine with either name.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>One of the key differences I see between the abstract model in Cloud Print Requirements and Model and the binding model in IPP Shared Infrastructure Extensions is that the relationship between the Cloud Print Service/Infrastructure Printer, Cloud Print Manager/Manager, and Output Device is explicit and follows the existing SM/IPP model for output device fanout. IPPSIX allows multiple output devices to be associated with a single instance of the Cloud Print Service/Infrastructure Printer and uses an identifier (output-device-uuid) from the Cloud Print Manager/Manager to identify which output device is being "addressed" or provided.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Andale Mono","serif";color:black'>_________________________________________________________<br>Michael Sweet, Senior Printing System Engineer, PWG Chair<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p></div></div><br />--
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