public void StorageVirtuosoBlankNodeInsert()
{
VirtuosoManager manager = VirtuosoTest.GetConnection();
try
{
Graph g = new Graph();
Triple t = new Triple(g.CreateBlankNode(), g.CreateUriNode("rdf:type"), g.CreateUriNode(UriFactory.Create("http://example.org/object")));
manager.UpdateGraph("http://localhost/insertBNodeTest", t.AsEnumerable(), null);
Object results = manager.Query("ASK WHERE { GRAPH <http://localhost/insertBNodeTest> { ?s a <http:///example.org/object> } }");
if (results is SparqlResultSet)
{
TestTools.ShowResults(results);
Assert.IsTrue(((SparqlResultSet)results).Result, "Expected a true result");
}
else
{
Assert.Fail("Didn't get a SPARQL Result Set as expected");
}
}
finally
{
if (manager != null)
{
manager.Dispose();
}
}
}
private Uri ReadQuadFormat(TextReader reader, Uri graph, RdfSerializationFormat format, bool update)
{
using (VirtuosoManager manager = new VirtuosoManager(CreateConnectionString()))
{
using (VDS.RDF.ThreadSafeTripleStore store = new VDS.RDF.ThreadSafeTripleStore())
{
VDS.RDF.Parsing.TriGParser parser = new TriGParser();
parser.Load(store, reader);
foreach (var g in store.Graphs)
{
if (update)
{
manager.UpdateGraph(g.BaseUri, g.Triples, new Triple[] { });
}
else
{
manager.SaveGraph(g);
}
}
}
}
return(graph);
}
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 StorageVirtuosoUpdateGraph()
{
VirtuosoManager manager = VirtuosoTest.GetConnection();
try
{
Assert.IsNotNull(manager);
Console.WriteLine("Got the Virtuoso Manager OK");
//Make some Triples to add to the Graph
Graph g = new Graph();
g.BaseUri = new Uri("http://example.org/");
g.NamespaceMap.AddNamespace(String.Empty, g.BaseUri);
List <Triple> additions = new List <Triple>();
additions.Add(new Triple(g.CreateUriNode(":seven"), g.CreateUriNode("rdf:type"), g.CreateUriNode(":addedTriple")));
List <Triple> removals = new List <Triple>();
removals.Add(new Triple(g.CreateUriNode(":five"), g.CreateUriNode(":property"), g.CreateUriNode(":value")));
//Try to Update
manager.UpdateGraph(g.BaseUri, additions, removals);
Console.WriteLine("Updated OK");
//Retrieve to see what's in the Graph
Graph h = new Graph();
manager.LoadGraph(h, g.BaseUri);
Console.WriteLine("Retrieved OK");
Console.WriteLine("Graph contents are:");
foreach (Triple t in h.Triples)
{
Console.WriteLine(t.ToString());
}
Assert.IsTrue(h.Triples.Contains(additions[0]), "Added Triple should be in the retrieved Graph");
Assert.IsFalse(h.Triples.Contains(removals[0]), "Removed Triple should not be in the retrieved Graph");
}
finally
{
if (manager != null)
{
manager.Dispose();
}
}
}
private Uri ReadTripleFormat(TextReader reader, Uri graphUri, RdfSerializationFormat format, bool update)
{
using (VirtuosoManager manager = new VirtuosoManager(CreateConnectionString()))
{
using (VDS.RDF.Graph graph = new VDS.RDF.Graph())
{
dotNetRDFStore.TryParse(reader, graph, format);
graph.BaseUri = graphUri;
if (update)
{
manager.UpdateGraph(graphUri, graph.Triples, new Triple[] { });
}
else
{
manager.SaveGraph(graph);
}
}
}
return(graphUri);
}