| content
| - %META:TOPICPARENT{name="VirtJenaProvider"}%
%VOSWARNING%
---+ 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 triples = new ArrayList ();
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 .");
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 ");
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 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>
*/
}
}
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![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)