Virtuoso Jena Provider - SPARQL Example 3 import java.util.*; import com.hp.hpl.jena.query.*; import com.hp.hpl.jena.rdf.model.RDFNode; import com.hp.hpl.jena.graph.Node; import com.hp.hpl.jena.graph.Triple; import virtuoso.jena.driver.*; public class VirtuosoSPARQLExample3 { public static void main(String[] args) { String url; if(args.length == 0) url = "jdbc:virtuoso://localhost:1111"; else url = args[0]; Node foo1 = Node.createURI("http://example.org/#foo1"); Node bar1 = Node.createURI("http://example.org/#bar1"); Node baz1 = Node.createURI("http://example.org/#baz1"); Node foo2 = Node.createURI("http://example.org/#foo2"); Node bar2 = Node.createURI("http://example.org/#bar2"); Node baz2 = Node.createURI("http://example.org/#baz2"); Node foo3 = Node.createURI("http://example.org/#foo3"); Node bar3 = Node.createURI("http://example.org/#bar3"); Node baz3 = Node.createURI("http://example.org/#baz3"); List <Triple> triples = new ArrayList <Triple> (); VirtGraph graph = new VirtGraph ("Example3", url, "dba", "dba"); graph.clear (); System.out.println("graph.isEmpty() = " + graph.isEmpty()); System.out.println("Add 3 triples to graph <Example3>."); graph.add(new Triple(foo1, bar1, baz1)); graph.add(new Triple(foo2, bar2, baz2)); graph.add(new Triple(foo3, bar3, baz3)); System.out.println("graph.isEmpty() = " + graph.isEmpty()); System.out.println("graph.getCount() = " + graph.getCount()); triples.add(new Triple(foo1, bar1, baz1)); triples.add(new Triple(foo2, bar2, baz2)); graph.isEmpty(); System.out.println("Remove 2 triples from graph <Example3>"); graph.remove(triples); System.out.println("graph.getCount() = " + graph.getCount()); System.out.println("Please check result with isql tool."); /* EXPECTED RESULT: SQL> sparql select ?s ?p ?o from <Example3> where {?s ?p ?o}; s p o VARCHAR VARCHAR VARCHAR _______________________________________________________________________________ http://example.org/#foo3 http://example.org/#bar3 http://example.org/#baz3 1 Rows. -- 26 msec. SQL> */ } }