Hello,
My query used to work. My java machine crashed. That was the problem.
As far as http://wiki.dbpedia.org/snorql is concerned, it was my fault, I meant
this page http://dbpedia.org/snorql/ .
Thank you.
--- Στις Τετ., 26/01/11, ο/η Vivi kasse <[email protected]> έγραψε:
Από: Vivi kasse <[email protected]>
Θέμα: [Dbpedia-discussion] Fw: dbpedia/snorql and dbpedia query through jena
Προς: [email protected]
Ημερομηνία: Τετάρτη, 26 Ιανουάριος 2011, 11:25
Hello,
What is going on with http://wiki.dbpedia.org/snorql ?? I get the following
response:
Your are here:
This page doesn't exist yet. Maybe you want to create it?
I am trying to execute the following query through Jena.
String prefixes = "PREFIX owl: <http://www.w3.org/2002/07/owl#>\n" +
"PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>\n"+
"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"+
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n"+
"PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n"+
"PREFIX dc: <http://purl.org/dc/elements/1.1/>\n"+
"PREFIX : <http://dbpedia.org/resource/>\n"+
"PREFIX dbpedia2:
<http://dbpedia.org/property/>\n"+
"PREFIX dbpedia: <http://dbpedia.org/>\n"+
"PREFIX skos: <http://www.w3.org/2004/02/skos/core#>\n"+
"PREFIX dbpedia-owl: <http://dbpedia.org/ontology/>\n"+
"PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>\n";
String sparqlQueryString = prefixes +
"SELECT ?resource ?page ?icon ?lat ?lon WHERE {\n" +
"?resource foaf:name \""+name+"\"@en ;\n" +
" foaf:page ?page ;\n" +
"dbpedia-owl:thumbnail ?icon ;\n" +
"geo:lat ?lat ;\n"
+
"geo:long ?lon.\n" +
"}";
Query query = QueryFactory.create(sparqlQueryString);
QueryExecution qexec =
QueryExecutionFactory.sparqlService("http://dbpedia.org/sparql";, query);
try {
ResultSet results = qexec.execSelect();
.....}
and I get no results but when i execute the same query in
http://dbpedia.org/sparql/ i get results. What is going on??
Could you help me please??
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