[redland-dev] Query literal values in a certain language (using SPARQL)

[Martin Stricker]

I think you are looking for FILTER and the LANG operator:

<http://www.w3.org/TR/rdf-sparql-query/#func-lang>

?

Am 05.01.2009 um 00:16 schrieb Wouter Bolsterlee:

> Hi all,
>
> Is it possible with librdf to query only literal values in a certain
> language (using SPARQL or by other means)?
>
> Something like this does not work (gives a SPARQL syntax error):
>
>  SELECT * WHERE { ?x rdfs:label ?label at en . }
>
> ...and neither does this:
>
>  SELECT * WHERE { ?x rdfs:label ?label .
>                   ?label xml:lang "en" . }
>
> The following SPARQL query works as expected, though:
>
>  SELECT * WHERE { ?x rdfs:label "Foobar"@en }
>
> Fwiw, my specific use case is this: I want to extract the  
> rdfs:comment and
> rdfs:label contents from RDF data (small RDF files from  
> dbpedia.org), but
> only the English versions. The files I'm using contain language  
> tags, and
> alternative rdfs:label and rdfs:comment nodes in languages besides  
> English.
>
> Thanks in advance. Any pointers are welcome!
>
>    — Wouter
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