- From: Danny Ayers <danny.ayers@gmail.com>
- Date: Thu, 29 Mar 2012 15:52:49 +0200
- To: public-lod@w3.org
PS. A better name might be "Optimistic SPARQL" (and it should probably return a 404 if the query doesn't return a suitable pattern). On 29 March 2012 14:18, Danny Ayers <danny.ayers@gmail.com> wrote: > A proposed mini-convention for giving SPARQL endpoints an "I'm Feeling > Lucky" option and hence supporting things like WebFinger. > > Take a query like: > > SELECT DISTINCT ?blog WHERE { > ?person foaf:name "James Snell" . > ?person foaf:weblog ?blog . > } > LIMIT 1 > > If I'm asking something like that, then what I'm probably trying to > achieve is to get to James' blog. But if use that on an endpoint, what > I'll get back is a bunch of XML (or JSON), from which I'll have to > parse out the URI, then fire off another GET. So what about having the > endpoint server support an additional parameter, something like: > > http://example.org/sparql?query=SELECT+DISTINCT+... &action=redirect > > which would tell the server to pull out the URI in the results, and return: > > HTTP/1.1 302 Found > Location: http://chmod777self.blogspot.com > > - thus taking me straight to my actual target. > > I've had James Snell's proposal [1] for simplifying WebFinger [2] > simmering away in the back of my mind. I'm unconvinced by the > architectural style of what he suggests (Gopher?), but he does get > bonus points for creativity. (See also James' response on that [3]). > In the query above I've used foaf:name which is likely to give > ambiguous results. But if it was foaf:mbox_sha1sum instead, you've got > a mechanism for WebFinger with James' optimization. Ok, the request > URI is a bit cumbersome, but templating a short version for special > cases like WebFinger would be easy enough. > > (Blogged at [4] and fired off to all the social nets, but then it > occurred to me that most of the potential implementers will be around > here :) > > Cheers, > Danny. > > [1] http://chmod777self.blogspot.com/2012/03/thoughts-on-webfinger.html > [2] http://www.ietf.org/id/draft-jones-appsawg-webfinger-01.txt > [3] https://plus.google.com/112609322932428633493/posts/WvedRayrYEn > [4] http://dannyayers.com/2012/03/29/Lucky-SPARQL > > -- > http://dannyayers.com > > http://webbeep.it - text to tones and back again -- http://dannyayers.com http://webbeep.it - text to tones and back again
Received on Thursday, 29 March 2012 13:59:41 UTC