- From: Phil Archer <parcher@icra.org>
- Date: Fri, 02 Nov 2007 22:07:17 +0000
- To: Semantic Web <semantic-web@w3.org>
There's a good deal of 'noise' about the HTTP Link header at the moment - and not all of it created by me (honest!). In the currently published draft of the POWDER Description Resources document [1] we posit the use of HTTP Link - but, as the doc shows, this is something of an open question. Dan Connolly [2] questioned it and, well, there's a short thread with lots of links to evidence to support the contention that the only real problem with the HTTP Link header is that, whilst it was defined in RFC 2068, it was dropped in RFC2616 (but it remains in the registry). The new HTTPBIS WG [3] isn't going to re-instate the header, but Mark Nottingham may re-issue his draft on this and the associated HTTP Profile header [4]. The 'protocol part' of the Protocol for Web Description Resources is handicapped by its absence so I'm certainly hoping Mark will re-issue it and that there will be support from elsewhere. I guess it's all about trying to build momentum, show use cases and the fact that, well, it's proven to work. On a practical level, the dependency on HTTP Link being formalised has been removed from the next published draft of the POWDER doc but we hint at its existence and plan to show example of its use in the (yet to be written) non-normative Primer. Phil. [1] http://www.w3.org/TR/2007/WD-powder-dr-20070925/#assoc [2] http://lists.w3.org/Archives/Public/public-powderwg/2007Oct/0002.html [3] http://www.ietf.org/html.charters/httpbis-charter.html [4] http://www.mnot.net/drafts/draft-nottingham-http-link-header-00.txt cdr wrote: >> __$ curl -I http://www.w3.org/2007/ont/unit.rdf >> Link: meta;rel=meta > > i had a question about how to link to metadata for an Image or other binary file, from the header, and i think this addresses it > > Link: http://abs/path/to/meta.rdf;rel=http://purl.org/dc/elements/1.1/description > > ^- correct use with absolute URIs? > > will tabulator follow anything here. or only specific predicates denoting available metadata? > > can i just throw all the triples (eg EXIF) right into a single link header using commas to seperate? including strings? > >> Tabulator implements this on the cleint side, and pulls in the metadata. > > > > -- Phil Archer Chief Technical Officer, Family Online Safety Institute w. http://www.fosi.org/people/philarcher/ Register now for the first, annual Family Online Safety Institute Conference and Exhibition, December 6th, 2007, Washington, DC. Go to: http://www.fosi.org/conference2007/ today!
Received on Friday, 2 November 2007 22:07:48 UTC