Hi Michael,
Thanks for the feedback. Although your idea is interesting, I have not
seen any widget engines that actually use RDF for the metadata format.
For the widget spec, we are following industry practices and I think
it would be too much a revolutionary step to require a widget engine
to have to process RDF.

Besides, if I had my way, I would do away with XML all together and
just to the manifest/configuration with simple JavaScript Object
Notation. I am not convinced that there is any real advantage in using
XML over other formats.
Marcos


On 3/15/07, Hausenblas, Michael <[EMAIL PROTECTED]> wrote:


I recently read your proposals for a widget specification - very
impressive!

In the Widgets 1.0 Requirements WD you write ...

        'The manifest language must be defined using XML [...]'

Well, this doesn't exclude RDF, right? So here are my 2 cents:

Taking the Widget specification [2] as a start, I defined an
RDF schema for the manifest document [3], and created a sample widget,
marked up with RDFa + HTML [4]. To actually generate the RDF that is
embedded in the HTML file, one has extract it; the result of this is
available at [5].

I hope this helps you in your discussions. Please note that with this
approach other issues (IPR, content negotiation, etc.) can be easily
addressed as well - as shown in the sample with the license info.

Cheers,
        Michael

[1] http://www.w3.org/TR/widgets-reqs/#req_xml
[2] http://www.w3.org/TR/widgets/
[3] http://www.w3.org/2006/07/SWD/RDFa/work/waf-wg/widgets-schema.rdf
[4]
http://www.w3.org/2006/07/SWD/RDFa/work/waf-wg/xsample-widget/index.html
[5]
http://torrez.us/services/rdfa/?url=http://www.w3.org/2006/07/SWD/RDFa/w
ork/waf-wg/xsample-widget/index.html

----------------------------------------------------------
 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH
 Steyrergasse 17, A-8010 Graz, AUSTRIA

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    phone: +43-316-876-1193 (fax:-1191)
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--
Marcos Caceres
http://datadriven.com.au

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