W3C home > Mailing lists > Public > www-rdf-interest@w3.org > October 2000

RDF <-> XLink <-> XML Schema

From: Dan Brickley <Daniel.Brickley@bristol.ac.uk>
Date: Thu, 26 Oct 2000 18:47:34 +0100 (BST)
To: www-rdf-interest@w3.org
Message-ID: <Pine.GSO.4.21.0010261818110.21095-100000@mail.ilrt.bris.ac.uk>


RDF IG,

Linking fans might want to take a look at this:

	http://www.w3.org/TR/xlink-naming/
	XLink Markup Name Control
        W3C Note 24 October 2000

This Note outlines a possible XML Schema based
mechanism for using XLink with langauges such as XHTML 1.0 that have a
non-XLink syntax for representing linking information. From the problem
statement:

> [...]
>  A problem arises if you already have some marked-up information that
>  provides some of the same kinds of linking
>  information that XLink is designed to provide

The proposal:

> XML Schema could be useful in handling XML documents that
> want to use XLink but already provide link
> information in a form that is incompatible with XLink.

Bearing in mind that we also have the "Harvesting RDF Statements from
XLinks" Note, http://www.w3.org/TR/xlink2rdf/
you might be interested in the brief note describing what one might
express in the XML Schema:

>[...] Or each complex type could set up an attribute of
> type xl:arcrole and give it a value that corresponds to
> an RDF property.

This relates to the recent RDF IG thread on semantics and HTML, and to
the broad goals outlined in the Cambridge Communique, ie. the claim
that syntactic schemas might contain information to aid in the creation 
of application-specific data structures: 
See http://www.w3.org/TR/1999/NOTE-schema-arch-19991007

Maybe all this stuff might just work together after all! XML, XHTML,
XLink, XML Schema, RDF, XSLT... I'd love to see some testbed
implementation to explore this idea -- would make for a good student
project, if any CS Dept types out there are looking for project ideas.

As a related aside (it's RDF, everything's connected ;-) I'd love to
hear if anyone managed to get the XSLT-2-C++ XSLTC compiler working with either
the XLink2RDF XSLT or either of the two XSLT RDF parsers.
see http://www.xmlhack.com/read.php?item=681 (the XSLTC site seems down
right now btw).

Dan

Eve Maler's original announcement follows.

From http://lists.w3.org/Archives/Public/www-xml-linking-comments/2000OctDec/0038.html

> Message-Id: <5.0.0.25.2.20001025122913.01b8ca90@abnaki.east.sun.com>
> Date: Wed, 25 Oct 2000 12:33:00 -0400
> To: w3c-xml-linking-ig@w3.org, www-xml-linking-comments@w3.org
> From: "Eve L. Maler" <eve.maler@east.sun.com>
> Subject: NOTE on XLink Markup Name Control
> 
> Several references have been made recently to a Note-in-the-works that 
> would discuss a possible XML Schema-based solution to the need to use
> XLink  in XML-based languages such as XHTML 1.0.
> 
> This Note has now been published.  You can find it at:
> 
>     http://www.w3.org/TR/xlink-naming/
> 
> Happy reading--
> 
>        Eve
> --

see also commentary at 
http://www.xmlhack.com/read.php?item=852
Received on Thursday, 26 October 2000 13:47:49 GMT

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