package de.fuberlin.wiwiss.d2rq.examples;
import com.hp.hpl.jena.query.Query;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSet;
import de.fuberlin.wiwiss.d2rq.jena.ModelD2RQ;
public class SPARQLExample {
public static void main(String[] args) {
ModelD2RQ m = new ModelD2RQ("file:doc/example/mapping-iswc.ttl");
String sparql =
"PREFIX dc: <http://purl.org/dc/elements/1.1/>" +
"PREFIX foaf: <http://xmlns.com/foaf/0.1/>" +
"SELECT ?paperTitle ?authorName WHERE {" +
" ?paper dc:title ?paperTitle . " +
" ?paper dc:creator ?author ." +
" ?author foaf:name ?authorName ." +
"}";
Query q = QueryFactory.create(sparql);
ResultSet rs = QueryExecutionFactory.create(q, m).execSelect();
while (rs.hasNext()) {
QuerySolution row = rs.nextSolution();
System.out.println("Title: " + row.getLiteral("paperTitle").getString());
System.out.println("Author: " + row.getLiteral("authorName").getString());
}
m.close();
}
}