Thank you for your reactions Mirela and Alex. Unfortunately my problem is
still there even though I tried what you were suggesting. I really don't
understand why sometimes everything works fine and other time I get these
errors with the SAME sparql query. I expect for one query always the same
response but it is not. I don't know what are my options here.
2010/12/2 Alex Rodriguez Lopez <[email protected]>
> Have you tried single quotes (ie: 'en' )?
>
> Or this syntax?:
>
> FILTER ( lang(?label) = 'en' )
>
>
> Zbyněk Botló, 01-12-2010 19:50:
> > Hi,
> >
> > I've got a problem querying public DBpedia sparql endpoint
> > (http://dbpedia.org/sparql). Everything works fine when I use the web
> > interface to run the query. Problem occurs when I want to execute the
> > same query through my application. I'm using the HTTP POST method to
> > pass the input encoded query but the server response is "*500 SPARQL
> > Request Failed"* with following message included:
> >
> > *RDFXX Error Unknown language in DB.DBA.RDF_LANGUAGE_OF_LONG, bad id
> 0*
> >
> > *
> > *
> > My query looks like this:
> >
> > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
> > PREFIX foaf: <http://xmlns.com/foaf/0.1/>
> > PREFIX db-prop: <http://dbpedia.org/property/>
> > PREFIX db-ont: <http://dbpedia.org/ontology/>
> > PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>
> >
> > SELECT DISTINCT ?subject ?label ?comment ?homepage ?page ?thumb
> > ?photo ?latlong
> > (sql:rnk_scale (<LONG::IRI_RANK> (?subject))) AS ?rank
> > WHERE
> > {
> > ?subject rdfs:label ?label .
> > OPTIONAL { ?subject rdfs:comment ?comment } .
> > OPTIONAL { ?subject foaf:homepage ?homepage } .
> > OPTIONAL { ?subject foaf:page ?page } .
> > OPTIONAL { ?subject db-ont:thumbnail ?thumb } .
> > OPTIONAL { ?subject db-prop:hasPhotoCollection ?photo } .
> > OPTIONAL { ?subject geo:geometry ?latlong } .
> > FILTER(bif:contains(?label, '"berlin"') && langMatches(lang(?label),
> > "en") && langMatches(lang(?comment), "en")) .
> > }
> > ORDER BY DESC(?rank)
> > LIMIT 3
> >
> >
> >
> > Thank you for your help
> > Zbynek Botlo
> >
> >
> >
> >
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> >
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>
>
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