Re: Re: Atom and RDF

Ian Davis wrote:
 > On 14/10/2004 07:20, Alex Kolesnichenko wrote:
 >
 >>But the problem still persists: how the software will determine that 
these
 >>three links point to the same content but in different 
representation? There
 >>should be something like multipart/alternative MIME stuff:
 >
 > There's already a built-in mechanism in RDF to represent this which is
 > rdf:Alt. It could be used like this:
 >
 > <rss:item>
 >    <rss:title>Ian's Bad Poem</rss:title>
 >    <encl:enclosure>
 >      <rdf:Alt>
 >        <rdf:li rdf:resource="http://example.com/torrent"
 >           dc:format="application/x-bittorrent"  <!-- whatever -->
 >           dc:title="Bit torrent link to mp3" />
 >        <rdf:li rdf:resource="http://example.com/mp3"
 >           dc:format="audio/mpeg"
 >           dc:title="MP3 of me reading my poem" />
 >        <rdf:li rdf:resource="http://example.com/text"
 >           dc:format="text/plain"
 >           dc:title="My poem itself" />
 >       </rdf:Alt>
 >     </encl:enclosure>
 > </rss:title>
 >
 > This would let you have multiple enclosures per item, each with a set of
 > alternatives. Is this closer to what's needed?

If the selection is to be done automatically I don't see the need to do 
this in RSS, for content negotiation we have HTTP. At least it should be 
possible to indicate several content-types per alternative, e.g.:

    <rdf:li rdf:resource="http://wymiwyg.org/ontologies/rss/attach"
            dc:title="The vocabulary for attachments used in
KnoBot">
	<dc:format>application/rdf+xml</dc:format>
	<dc:format>text/html</dc:format>
	<dc:format>application/trix</dc:format>
	<dc:format>application/rdf+n3</dc:format>
    </rdf:li>

reto


 
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