From: McDonald, Ira (imcdonald@sharplabs.com)
Date: Tue Aug 29 2006 - 14:37:15 EDT
> -----Original Message-----
> From: owner-sm@pwg.org [mailto:owner-sm@pwg.org]On Behalf Of Zehler,
> Peter
> Sent: Thursday, August 17, 2006 3:15 PM
> To: Zehler, Peter; sm@pwg.org
> Cc: pmp@pwg.org
> Subject: SM> Wed 30 Aug 1pm EDT - Semantic Model Teleconference
>
>
> All,
>
> On Wednesday August 30 there will be a Semantic Model Teleconference.
>
> Date/Time:
> August 30 2006
> 1 pm - 2 pm eastern
> Dial-In
> Tele-Con Number:1-866-365-4406
> PassCode: 2635888
> WebEx Meeting Details (http://www.mymeetings.com):
> Meeting Number: 747275324
> Meeting Passcode: PwgSm
> Meeting Host: Peter Zehler
> Join Instructions for Instant Net Conference:
> 1. Join the meeting now:
> http://www.mymeetings.com/xerox/nc/join.php?i=747275324&p=PwgSm&t=c
> 2. Enter the required fields.
> 3. Indicate that you have read the Privacy Policy.
> 4. Click on Proceed. If you have problems with the above link, go to
> http://www.mymeetings.com , select "join an event" and use the meeting
> number and passcode from above.
>
> Agenda: 1) Approve previous meeting minutes
>
> <ftp://ftp.pwg.org/pub/pwg/Semantic-Model/Minutes/PWG_SM_call_
> minutes_20
> 060712.pdf>
> 2) Agenda bashing
> 3) Walk through the updated schema (Link below)
> a) Recent changes
> b) Proposed direction
> 4) Class structure of Semantic Model
> 5) Chameleon schema issues
> 6) Logical division of PWG schema
> 7) incorporation of SM v1 printer elements into
> PrinterService
> 8) Discuss next steps and dates
>
>
> I have just uploaded an update to the Semantic Model
>
> <ftp://ftp.pwg.org/pub/pwg/Semantic-Model/SchemaPWG-SM-080906.zip>
>
> I am well aware that this does not pass the W3C's XSV but XMLSPY can
> handle it. The crux of the issue is that this is a "mid-stream" edit
> that I would like to discuss. If you want the details on the problem
> see below.
>
> Specifically the discussion I would like to have is how far we want to
> go with a class hierarchy in the PWG SM v2. Take a look at System
> Status and any of the service's status. You will see there is a base
> class that is used across all of them. There are ramification in
> element naming.
>
> Another aspect of the model that was changed was the use of multiple
> namespaces. Note that the copyservice is now in its own
> namespace while
> the print service remains in the sm: namespace. The elements specific
> to WIMS are also in their own namespace.
>
> I also removed the legacy PWG SM v1 PrinterStatus and included all the
> elements in the print service extension to the status class
>
> For the convenience of those without XMLSPY I also included an HTML
> version of the schema that might be useful for browsing.
> (warning: it's
> about 12M)
> <ftp://ftp.pwg.org/pub/pwg/Semantic-Model/PWG-SM-080906-HTML.zip
> >
>
>
> Pete
>
> Explanation of problem:
> The actual problem is that the Chameleon schema has an unfortunate
> limitation. You can only reference (via an explicit ref or through a
> type declaration) entities that are bound to a namespace (i.e. schema
> file with a target namespace). That is easily fixed by importing the
> appropriate sub-schema. The side effect occurs when the chameleon
> schema is included in a schema file from the same namespace ad the
> chameleon's imported sub-schema.
> In other words a schema file(A) with a target namespace includes a
> chameleon schema file (B) without a namespace. The effect of that is
> that the chameleon schema (B)takes on the target namespace of (A). If
> the Chameleon schema (B) IMPORTS a schema file (C) that has the same
> namespace as (A), and through the chameleon effect (B), that is not
> allowed. There are some tools that are forgiving. An import with the
> same namespace as the imported is functionally an include.
>
>
> Peter Zehler
> XEROX
> Xerox Innovation Group
> Email: Peter.Zehler@XeroxLabs.com
> Voice: (585) 265-8755
> FAX: (585) 265-7441
> US Mail: Peter Zehler
> Xerox Corp.
> 800 Phillips Rd.
> M/S 128-25E
> Webster NY, 14580-9701
>
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