[public-lod2] [lod2] OpenDataChallenge.org winners announced and PublicData.eu beta launched at Digital Agenda Assembly

[William Waites]

It is usually nice to put up a snorql (nice little html+js thing
by cygri) in front of the endpoint, say at /snorql/ so that people
can point their web browsers at it and try queries.

For example, see http://semantic.ckan.net/snorql/

The (perfectly reasonable) 500 error that 4s-httpd gives you when
you don't supply a query is confusing to some people (thinking 
about it, it should robably be a 400 actually, but that would 
still be confusing...)

-w

* [2011-06-24 13:48:56 +0200] Friedrich Lindenberg <friedrich.lindenberg at okfn.org> écrit:

] Hi Bert,
] 
] thanks for your message. While accessing the SPARQL endpoint without a
] request will get you a HTTP 500 error (no query), the thing itself
] seems to work:
] 
] >>> from SPARQLWrapper import SPARQLWrapper, JSON
] >>> sparql = SPARQLWrapper("http://publicdata.eu/rdf/sparql")
] >>> sparql.setQuery("""SELECT * WHERE { ?a <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/dcat#Dataset> . }""")
] >>> sparql.setReturnFormat(JSON)
] >>> results = sparql.query().convert()
] >>> len(results['results']['bindings'])
] 20000
] 
] Can you perhaps detail on the problem a bit? I realize that this
] doesn't have a query interface like many other linked data sites but
] quite frankly I don't understand the fascination with these things:
] less than a percent of the site users will know how to use a SPARQL
] interface and for those programmatic access is much more relevant than
] a HTML UI. Nobody offers SQL prompts on their normal applications,
] either.
] 
] - Friedrich
] 
] 
] On Fri, Jun 24, 2011 at 8:46 AM, Bert Van Nuffelen
] <bert.van.nuffelen at tenforce.com> wrote:
] > Hi Johathan,
] >
] > I browsed the publicdata.eu site and clicked on the SPARQL endpoint
] > and it turns to be dead http://publicdata.eu/rdf/sparql
] >
] > Can you forward this message to the right person.
] > I did not find an email address for technical support on the site.
] >
] > kind regards,
] >
] > Bert
] >
] >
] > 2011/6/23 Jonathan Gray <jonathan.gray at okfn.org>:
] >> FYI
] >>
] >> http://lod2.eu/BlogPost/427-opendatachallenge-org-winners-announced-and-publicdata-eu-beta-launched-at-digital-agenda-assembly.html
] >>
] >> --
] >> Jonathan Gray
] >>
] >> Community Coordinator
] >> The Open Knowledge Foundation
] >> http://blog.okfn.org
] >>
] >> http://twitter.com/jwyg
] >> http://identi.ca/jwyg
] >>
] >> _______________________________________________
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] >>
] >
] >
] >
] > --
] > Bert Van Nuffelen
] >
] > Semantic Technologies Software Architect at TenForce
] > www.tenforce.be
] >
] > Bert.Van.Nuffelen at tenforce.com
] > Office: +32 (0)16 31 48 60
] > Mobile:+32 479 06 24 26
] > skype: bert.van.nuffelen
] >
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] 
] 
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-- 
William Waites                <mailto:ww at styx.org>
http://river.styx.org/ww/        <sip:ww at styx.org>
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