- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Fri, 5 Nov 2004 18:27:54 -0000
- To: "Dan Connolly" <connolly@w3.org>
- Cc: "RDF Data Access Working Group" <public-rdf-dawg@w3.org>
Form added: http://sparql.org/query.html Thanks Andy -------- Original Message -------- > From: Dan Connolly <> > Date: 5 November 2004 14:28 > > On Fri, 2004-11-05 at 13:39 +0000, Seaborne, Andy wrote: > > Simon and I were discussing interoperability testing after the > > telecon. > > > > It is traditional on Bonfire Night (Guy Fawkes night) in the UK to let > > off fireworks to celebrate a failed attempt to blow up the houses of > > Parliament. Fireworks include SPARQLers. So it is with some > > trepidation, I have put up a SPARQL server based on some rather > > unproven code. > > Nifty... > > > What works: (and I use "works" in the loosest possible sense) > > + SELECT (RDF results only), > > Ah... RDF descriptions of the result set, not the matching > subset? Oh... > > > CONSTRUCT (maybe) > > Is that how to get the matching subset? I guess I can try > it and see... ugh... escaping queries by hand is a pain... > do you offer a forms-based interface? I don't see one... > but I can make one easily enough (attached). > > Sure enough... I can get... > > <http://example.org/book/book5> > <http://purl.org/dc/elements/1.1/title> > "Harry Potter and the Order of the Phoenix" . > > with > > CONSTRUCT * > WHERE ( $x $p $v) AND $v =~ /Phoenix/ > > > This is kinda fun! > > > > Protocol: > > > > HTTP request must specify the language (lang=) and the query string > > (query=) Languages are "SPARQL" or > > "http://jena.hpl.hp.com/2003/07/query/SPARQL" > > > > In a browser, the results will come back text/plain for simple > > display. You can ask for application/rdf+xml as well. > > Now there's a front-side-of-one-page protocol spec if I've ever > seen one! > > > > The code is in > > cvs.sourceforge.net:/cvsroot/joseki/Joseki3 > > and > > cvs.sourceforge.net:/cvsroot/jena2/BRQL (but the query engine is > > called ARQ). > > > > Andy > -- > Dan Connolly, W3C http://www.w3.org/People/Connolly/ > D3C2 887B 0F92 6005 C541 0875 0F91 96DE 6E52 C29E
Received on Friday, 5 November 2004 18:28:27 UTC