[whatwg] Ghosts from the past and the semantic Web

Greg Houston gregory.houston at gmail.com
Fri Aug 29 09:12:43 PDT 2008

On Fri, Aug 29, 2008 at 10:35 AM, Kristof Zelechovski
<giecrilj at stegny.2a.pl> wrote:
> Rather meta-property than metadata-property, otherwise seems quite
> reasonable.
> Chris

<div id="Sarah"
       <p><span meta-foo="property:name">Sarah Foo</span></p>
       <p><span meta-foo="property:job:title">CEO</span></p>
       <p><span meta-foo="property:job:salary">$120,000</span></p>
       <p><span meta-foo="property:age">32</span></p>
       <ul meta-foo="property:likes;rel:whatever;typeof:whatever">


> -----Original Message-----
> From: whatwg-bounces at lists.whatwg.org
> [mailto:whatwg-bounces at lists.whatwg.org] On Behalf Of Greg Houston
> Sent: Friday, August 29, 2008 5:29 PM
> To: Shannon
> Cc: Ben Adida; whatwg at lists.whatwg.org; Eduard Pascual
> Subject: Re: [whatwg] Ghosts from the past and the semantic Web
> On Fri, Aug 29, 2008 at 3:31 AM, Shannon <shannon at arc.net.au> wrote:
>> I think you see the problem to be solved as "RDF-in-HTML". I would prefer
>> the problem defined as "Metadata-in-HTML".
> It seems to me that everything they want to do could be done with the
> data attribute except that attribute is meant to be private, which
> could mean an assortment of things. John Resig mentioned it is private
> in the sense that it does not effect layout or presentation, but it
> could also be private in the sense that I don't have to worry about
> someone else using any of my data names, e.g., I can use data-title,
> data-blue, data-atari, and not worry about conflicts with anyone else.
> Data is private, metadata is not. It seems like a metadata attribute
> could be pretty much exactly like the data attribute but with
> namespacing.
> Then there is only one reserved metadata name and that is
> metadata-namespace. The vocabulary file could be written in XML or
> some language that doesn't exist yet. It tells you what it is in it's
> doctype. What they want to add as HTML attributes instead they would
> have to further define in their vocabulary (if they don't already),
> e.g., typeof, about, property and so forth. They can make a thousand
> new metadata attributes if they want, they just have to define them in
> their vocabulary file.
> <div id="Sarah"
>        metadata-namespace="foo:http://mysite.com/foo/"
>        metadata-foo="instanceof:Person;about:Sarah">
>        <p><span metadata-foo="property:name">Sarah Foo</span></p>
>        <p><span metadata-foo="property:job:title">CEO</span></p>
>        <p><span metadata-foo="property:job:salary">$120,000</span></p>
>        <p><span metadata-foo="property:age">32</span></p>
>        <h3>Likes:</h3>
>        <ul metadata-foo="property:likes;rel:whatever;typeof:whatever">
>                <li>chocolate</li>
>                <li>stars</li>
>                <li>green</li>
>        </ul>
> </div>

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