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

Fri Jun 24 14:01:19 UTC 2011

Hi William,

I think you comment is right.
I am so used that the url of SPARQL endpoint will lead me to a webpage
where I can enter a sample query that I misread the message of
the publicdata.eu sparql endpoint.

kind regards,

Bert

2011/6/24 William Waites <ww at styx.org>:
> 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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> ] >> http://lists.informatik.uni-leipzig.de/mailman/listinfo/lod2
> ] >>
> ] >
> ] >
> ] >
> ] > --
> ] > Bert Van Nuffelen
> ] >
> ] > Semantic Technologies Software Architect at TenForce
> ] > www.tenforce.be
> ] >
> ] > Bert.Van.Nuffelen at tenforce.com
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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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-- 
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