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Re: Valid XHTML and Faithful Infoset redflag - stated (semi) formally

From: Chimezie Ogbuji <ogbujic@ccf.org>
Date: Wed, 25 Apr 2007 11:03:37 -0400
To: "Dan Connolly" <connolly@w3.org>
cc: "GRDDL Working Group" <public-grddl-wg@w3.org>
Message-ID: <1177513417.17530.88.camel@otherland>

On Wed, 2007-04-25 at 09:52 -0500, Dan Connolly wrote:
> On Wed, 2007-04-25 at 10:26 -0400, Chimezie Ogbuji wrote:
> [...]
> > Define a class xhtml:Document defined (necessarily and sufficiently) as
> > the class of documents which have a jc:validWRT relationship between
> > them and a W3C sanctioned XHTML DTD
> 
> That excludes the input document in the test case currently in question.
> http://www.w3.org/2001/sw/grddl-wg/td/html-and-grddl-xform-attr

Yes, that was the intention of defining it this way, to call this out
explicitely.  

> 
> jjc objects to that objection, with good reason.
> http://lists.w3.org/Archives/Public/public-grddl-wg/2007Apr/0129.html

Following the suggestion of (a) - which I agree with - would *not*
require that membership in xhtml:Document is a requirement for
calculating GRDDL results WRT to a a[@rel='transformation'] |
link[@rel='transformation'].

> And actually, DTDs funamentally don't fit the jc:validWRT model.
> xml:valid(doc) is a one-place predicate, and it's only
> true when doc includes (by value or by reference) a DTD.

I don't follow.  If it doesn't reference a DTD, there is no jc:validWRT
assertion, if it does and it is valid WRT to the referenced DTD, there
is.

> It would be really nice if XML 1.0 had defined
> a valid(doc, DTD) relationship, but it didn't.

Yup.. a shame, but doesn't prevent me from coining one to help clarify
the problem with the notion of a 'family of XHTML documents' 

-- 
Chimezie Ogbuji
Lead Systems Analyst
Thoracic and Cardiovascular Surgery
Cleveland Clinic Foundation
9500 Euclid Avenue/ W26
Cleveland, Ohio 44195
Office: (216)444-8593
ogbujic@ccf.org


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Received on Wednesday, 25 April 2007 15:03:50 GMT

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