[
Lists Home |
Date Index |
Thread Index
]
Jeni,
Jeni Tennison wrote:
>Hi Patrick,
>
>>>I don't think that I do. I'm quite happy for XML to be interpreted
>>>as the Infoset, as the PSVI, as the XPath data model, as the DOM
>>>data model, as the LMNL data model, indeed as any data model anyone
>>>wants to use with it! XML is a syntax, that's all.
>>>
>>Sorry, that is simply not correct.
>>
>>Underlying XML is a data model. That data model is set forth at:
>>http://www.w3.org/XML/Datamodel.html
>>
>
>Ahh, I see. This must be the nub of our disagreement.
>
>The document that you quote is not a normative definition of XML.
>There are many normative definitions of data models for XML, including
>the Infoset and XPath.
>
And it is luck that they all follow a tree based model?
>
>It's a classic "chicken and egg" thing -- data models and syntaxes are
>intertwined -- but in this case, XML is defined as a syntax, which can
>have many data models; LMNL is defined as a data model, which can have
>many syntaxes.
>
And all those data models look a lot like trees?
>
>I don't know how to persuade you of this, but I see that Tim Bray's
>written a message that will hopefully help...
>
Probably time to end this particular thread. I was trying to convince
you that if everything the W3C has done with XML looks like a tree, then
it must have a tree model. I have failed in that attempt and don't
really have any other evidence to offer. (I don't consider a plethora of
tree based data models persuasive at all that XML has a one syntax and
many data models.)
This is particularly important in light of your insistance that new
models of XML must still comply with the well-formedness strictures of
XML 1.0. You can have any model you like with XML, so long as it is tree
based. (Or convert to some other model but I don't share your confidence
in that strategy.)
But, as Sam Hunting has recently pointed out, all XML processors save
SAX, treat XML documents as trees with a single root, so call JITTs a
challenge to implementations of a non-existent data model in XML.
Patrick
>
>Cheers,
>
>Jeni
>
>---
>Jeni Tennison
>http://www.jenitennison.com/
>
>
>-----------------------------------------------------------------
>The xml-dev list is sponsored by XML.org <http://www.xml.org>, an
>initiative of OASIS <http://www.oasis-open.org>
>
>The list archives are at http://lists.xml.org/archives/xml-dev/
>
>To subscribe or unsubscribe from this list use the subscription
>manager: <http://lists.xml.org/ob/adm.pl>
>
--
Patrick Durusau
Director of Research and Development
Society of Biblical Literature
pdurusau@emory.edu
|
