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try{
String queryString = "SELECT ?label ?comment " + " WHERE { " +
"<"+uri2+"> <http://www.w3.org/2000/01/rdf-schema#label> ?label." +
"<"+uri2+"> <http://www.w3.org/2000/01/rdf-schema#comment> ?comment." +
" FILTER langMatches(lang(?label), 'en') " +
" FILTER langMatches(lang(?comment), 'en')}";
Query query = QueryFactory.create(queryString);
// initializing queryExecution factory with remote service.
// **this actually was the main problem I couldn't figure out.**
QueryExecution qexec = QueryExecutionFactory.sparqlService("http://dbpedia.org/sparql", query);
try {
ResultSet results = qexec.execSelect();
for (; results.hasNext();) {
QuerySolution sol = results.next();
if (sol.get("?label")!= null ){
vnom2.addElement(sol.get("?label"));}
else vnom2.addElement(" ");
if (sol.get("?label")!= null ){
vlabel2.addElement(sol.get("?label"));}
else vlabel2.addElement("");
if (sol.get("?comment")!= null){
vcomment2.addElement(sol.get("?comment"));
}
else vcomment2.addElement("");
}
}catch(Exception e1){
e1.printStackTrace();
}
finally {
qexec.close();
}
}catch(Exception e1){
e1.printStackTrace();
}
}
} |
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