- From: Murray Altheim <altheim@eng.sun.com>
- Date: Wed, 18 Apr 2001 15:30:12 -0700
- To: Aaron Swartz <aswartz@swartzfam.com>
- CC: Danny Ayers <danny@panlanka.net>, RDF Interest <www-rdf-interest@w3.org>
Aaron Swartz wrote: > > Danny Ayers <danny@panlanka.net> wrote: > > > Experimental engines that do stuff with the RDF could easily be rigged to > > recognise a link from rdf.png. > > I'd actually prefer if we used a common REL attribute. I've heard > suggestions of "meta" and "rdf". This would also work with LINK elements > too. Then we could do something like this: > > <a href="...rdfversion.rdf" rel="rdf">...</a> > > We could also stick stuff in the head of the document: > > <link rel="rdf" href=".../rdfversion.rdf" /> > > I'd like this much better than just guessing at rdf.png. > > What do others think? Has this been decided before? Perhaps we should use a > URI? > > rel="http://www.w3.org/RDF/" The contents of the 'rel' attribute is declared as %LinkTypes;, a space-separated list of XML Names; a URI won't do here. I kinda like the suggestion of using the 'type' attribute, which was designed to provide a MIME type. Problem is, "application/rdf+xml" is less than useful here. I feel like I'm not making any progress here though in one idea, and that is that linking to "RDF" is almost like linking to "XML" -- one needs to specify what specific grammar of RDF is being served. Otherwise, the processor has no understanding of the semantics of the received RDF. I don't think there's a MIME type for Dublin Core, and of course there won't be for author-designed RDF types. So 'type' doesn't really work that well either. Ideally, a namespace URI (ironically) would probably be best, since that allows for author-designed RDF applications, and doesn't force anyone to use only those RDF applications approved by a specific body. I advocated XML notations because the NOTATION declarations allow for both FPIs and URIs in declaring 'type'. There's currently no attribute on <link> that allows for this type of feature, which is why I've never travelled down this road before. But there *could* be in XHTML 2.0 if people made enough noise, and convinced the HTML WG that this was a good and necessary feature. Murray ........................................................................... Murray Altheim, SGML/XML Grease Monkey <mailto:altheim@eng.sun.com> XML Technology Center Sun Microsystems, 1601 Willow Rd., MS UMPK17-102, Menlo Park, CA 94025 the wood louse sits on a splinter and sings to the rising sap ain't it awful how winter lingers in springtimes lap -- archy
Received on Wednesday, 18 April 2001 18:29:26 UTC