public void StorageVirtuosoBlankNodeDelete() { //First ensure data is present in the store VirtuosoManager manager = VirtuosoTest.GetConnection(); try { manager.DeleteGraph("http://localhost/deleteBNodeTest"); Graph g = new Graph(); Triple t = new Triple(g.CreateBlankNode(), g.CreateUriNode("rdf:type"), g.CreateUriNode(UriFactory.Create("http://example.org/object"))); g.Assert(t); manager.UpdateGraph("http://localhost/deleteBNodeTest", t.AsEnumerable(), null); Object results = manager.Query("ASK WHERE { GRAPH <http://localhost/deleteBNodeTest> { ?s a <http://example.org/object> } }"); if (results is SparqlResultSet) { TestTools.ShowResults(results); Assert.IsTrue(((SparqlResultSet)results).Result, "Expected a true result"); //Now we've ensured data is present we can first load the graph and then try to delete the given triple Graph h = new Graph(); manager.LoadGraph(h, "http://localhost/deleteBNodeTest"); Assert.AreEqual(g, h, "Graphs should be equal"); //Then we can go ahead and delete the triples from this graph manager.UpdateGraph("http://localhost/deleteBNodeTest", null, h.Triples); Graph i = new Graph(); manager.LoadGraph(i, "http://localhost/deleteBNodeTest"); Assert.IsTrue(i.IsEmpty, "Graph should be empty"); Assert.AreNotEqual(h, i); Assert.AreNotEqual(g, i); } else { Assert.Fail("Didn't get a SPARQL Result Set as expected"); } } finally { if (manager != null) { manager.Dispose(); } } }
public void StorageVirtuosoDeleteGraph() { VirtuosoManager manager = VirtuosoTest.GetConnection(); try { Assert.IsNotNull(manager); Console.WriteLine("Got the Virtuoso Manager OK"); //Load in our Test Graph TurtleParser ttlparser = new TurtleParser(); Graph g = new Graph(); ttlparser.Load(g, "resources\\Turtle.ttl"); g.BaseUri = new Uri("http://example.org/deleteMe"); Console.WriteLine(); Console.WriteLine("Loaded Test Graph OK"); Console.WriteLine("Test Graph contains:"); Assert.IsFalse(g.IsEmpty, "Test Graph should be non-empty"); foreach (Triple t in g.Triples) { Console.WriteLine(t.ToString()); } Console.WriteLine(); //Try to save to Virtuoso manager.SaveGraph(g); Console.WriteLine("Saved OK"); Console.WriteLine(); //Try to retrieve Graph h = new Graph(); manager.LoadGraph(h, "http://example.org/deleteMe"); Assert.IsFalse(h.IsEmpty, "Retrieved Graph should be non-empty"); Console.WriteLine("Retrieved the Graph from Virtuoso OK"); Console.WriteLine("Retrieved Graph contains:"); foreach (Triple t in h.Triples) { Console.WriteLine(t.ToString()); } //Try to delete manager.DeleteGraph("http://example.org/deleteMe"); Graph i = new Graph(); manager.LoadGraph(i, "http://example.org/deleteMe"); Assert.IsTrue(i.IsEmpty, "Retrieved Graph should be empty as it should have been deleted from the Store"); } finally { if (manager != null) { manager.Dispose(); } } }