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();
}
}
}