I am trying to run this against the public DBPedia SPARQL gateway (text search)
This is straight from the website doc....
I get this error:
Exception in thread "main" com.hp.hpl.jena.query.QueryParseException: Line 1,
column 588: Unresolved prefixed name: bif:contains
Here is the query string:
String sparqlQueryString = " PREFIX owl:
<http://www.w3.org/2002/07/owl#>"+
" PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>"+
" PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
" PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
" PREFIX foaf: <http://xmlns.com/foaf/0.1/>"+
" PREFIX dc: <http://purl.org/dc/elements/1.1/>"+
" PREFIX : <http://dbpedia.org/resource/>"+
" PREFIX dbpedia2: <http://dbpedia.org/property/>"+
" PREFIX dbpedia: <http://dbpedia.org/>"+
" PREFIX skos: <http://www.w3.org/2004/02/skos/core#>"+
" SELECT DISTINCT ?x ?y"+
" FROM <http://dbpedia.org>"+
" WHERE {"+
" ?x rdfs:label ?y ."+
" ?y bif:contains \"Berlin\" ."+
" ?x skos:subject ?z ."+
" }";
Why is Virtuoso thinking bif is a prefix?
I am trying to run this from Jena because the web interface give me a time out.
Thanks much!
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