/// <summary>
/// Removes model from the store.
/// </summary>
/// <param name="uri">Uri of the model which is to be removed.</param>
public override void RemoveModel(Uri uri)
{
if (_store.HasGraph(uri))
{
_store.Remove(uri);
}
}
public Uri Read(Stream stream, Uri graphUri, RdfSerializationFormat format, bool update)
{
TextReader reader = new StreamReader(stream);
IGraph graph = new Graph();
IRdfReader parser = GetReader(format);
parser.Load(graph, reader);
graph.BaseUri = graphUri;
if (!update)
{
_store.Remove(graphUri);
}
_store.Add(graph, update);
return(graphUri);
}
public void ClearRepository()
{
foreach (var g in _repository.Graphs)
{
_repository.Remove(g.BaseUri);
}
}
public void SparqlViewGraphScope1()
{
TripleStore store = new TripleStore();
SparqlView view = new SparqlView("CONSTRUCT { ?s ?p ?o } FROM <http://example.org/data> WHERE { ?s ?p ?o . FILTER(IsLiteral(?o)) }", store);
view.BaseUri = new Uri("http://example.org/view");
store.Add(view);
Console.WriteLine("SPARQL View Empty");
TestTools.ShowGraph(view);
Console.WriteLine();
//Load a Graph into the Store to cause the SPARQL View to update
Graph g = new Graph();
FileLoader.Load(g, "resources\\InferenceTest.ttl");
g.BaseUri = new Uri("http://example.org/data");
store.Add(g);
Thread.Sleep(500);
if (view.Triples.Count == 0)
{
view.UpdateView();
}
int lastCount = view.Triples.Count;
Console.WriteLine("SPARQL View Populated");
TestTools.ShowGraph(view);
Assert.True(view.Triples.Count > 0, "View should have updated to contain some Triples");
//Load another Graph with a different URI into the Store
Graph h = new Graph();
h.BaseUri = new Uri("http://example.org/2");
FileLoader.Load(h, "resources\\Turtle.ttl");
store.Add(h);
Thread.Sleep(500);
view.UpdateView();
Assert.True(view.Triples.Count == lastCount, "View should not have changed since the added Graph is not in the set of Graphs over which the query operates");
//Remove this Graph and check the View still doesn't change
store.Remove(h.BaseUri);
Thread.Sleep(500);
view.UpdateView();
Assert.True(view.Triples.Count == lastCount, "View should not have changed since the removed Graph is not in the set of Graphs over which the query operates");
}
public void RemoveNonExistentTripleDoesNotDecreaseNodeCountOrResourceCount()
{
TripleStore store = MakeNewTripleStore();
store.Add(new Statement(new BlankNode(), new UriRef("http://example.com/pred"), new BlankNode()));
int NodeCountBefore = store.NodeCount;
int ResourceCountBefore = store.ResourceCount;
store.Remove(new ResourceStatement(new Resource(), new Resource(), new Resource()));
Assert.IsTrue(NodeCountBefore <= store.NodeCount, "Node count should not decrease");
Assert.IsTrue(ResourceCountBefore <= store.ResourceCount, "Resource count should not decrease");
store.Clear();
}
private static void GetRecord(string leiCode, TextWriter output, AllegroGraphConnector allegroGraphConnector)
{
var g = new Graph();
allegroGraphConnector.LoadGraph(g, "graph://lei.info/" + leiCode);
var ts = new TripleStore();
ts.Add(g);
var nqw = new NQuadsWriter();
var s = VDS.RDF.Writing.StringWriter.Write(ts, nqw);
output.Write(s);
output.Flush();
ts.Remove(g.BaseUri);
g.Clear();
ts.Dispose();
g.Dispose();
}
public void GraphEventBubbling()
{
try
{
this._graphAdded = false;
this._graphRemoved = false;
this._graphChanged = false;
//Create Store and Graph add attach handlers to Store
TripleStore store = new TripleStore();
Graph g = new Graph();
store.GraphAdded += this.HandleGraphAdded;
store.GraphRemoved += this.HandleGraphRemoved;
store.GraphChanged += this.HandleGraphChanged;
//Add the Graph to the Store which should fire the GraphAdded event
store.Add(g);
Assert.IsTrue(this._graphAdded, "GraphAdded event of the Triple Store should have fired");
//Assert a Triple
INode s = g.CreateBlankNode();
INode p = g.CreateUriNode("rdf:type");
INode o = g.CreateUriNode("rdfs:Class");
Triple t = new Triple(s, p, o);
g.Assert(t);
Assert.IsTrue(this._graphChanged, "GraphChanged event of the Triple Store should have fired");
//Retract the Triple
this._graphChanged = false;
g.Retract(t);
Assert.IsTrue(this._graphChanged, "GraphChanged event of the Triple Store should have fired");
//Remove the Graph from the Store which should fire the GraphRemoved event
store.Remove(g.BaseUri);
Assert.IsTrue(this._graphRemoved, "GraphRemoved event of the Triple Store should have fired");
}
catch (Exception ex)
{
TestTools.ReportError("Error", ex, true);
}
}
public void GetResourceDenotedReturnsSameResourceEvenAfterAllStatementsReferringToResourceHaveBeenRemoved()
{
TripleStore store = MakeNewTripleStore();
BlankNode theSubjectNode = new BlankNode();
UriRef thePredicateNode = new UriRef("http://example.com/pred");
BlankNode theObjectNode = new BlankNode();
store.Add(new Statement(theSubjectNode, thePredicateNode, theObjectNode));
Resource theSubjectResourceBefore = store.GetResourceDenotedBy(theSubjectNode);
Resource thePredicateResourceBefore = store.GetResourceDenotedBy(thePredicateNode);
Resource theObjectResourceBefore = store.GetResourceDenotedBy(theObjectNode);
store.Remove(new ResourceStatement(theSubjectResourceBefore, thePredicateResourceBefore, theObjectResourceBefore));
Assert.AreEqual(theSubjectResourceBefore, store.GetResourceDenotedBy(theSubjectNode), "Subject resource should be the same");
Assert.AreEqual(thePredicateResourceBefore, store.GetResourceDenotedBy(thePredicateNode), "Predicate resource should be the same");
Assert.AreEqual(theObjectResourceBefore, store.GetResourceDenotedBy(theObjectNode), "Object resource should be the same");
store.Clear();
}
public void RemoveExistingTriple()
{
TripleStore store = MakeNewTripleStore();
BlankNode theSubjectNode = new BlankNode();
UriRef thePredicateNode = new UriRef("http://example.com/pred");
BlankNode theObjectNode = new BlankNode();
store.Add(new Statement(theSubjectNode, thePredicateNode, theObjectNode));
Resource theSubjectResource = store.GetResourceDenotedBy(theSubjectNode);
Resource thePredicateResource = store.GetResourceDenotedBy(thePredicateNode);
Resource theObjectResource = store.GetResourceDenotedBy(theObjectNode);
//store.verbose = true;
store.Remove(new ResourceStatement(theSubjectResource, thePredicateResource, theObjectResource));
TripleStoreVerifier verifier = new TripleStoreVerifier();
Assert.IsTrue(verifier.verify(store));
store.Clear();
}
public virtual void Replace(ConciseBoundedDescription description)
{
Resource internalSubjectResource = GetResourceDescribedBy(description);
ArrayList statementsToRemove = new ArrayList();
IEnumerator statementEnumerator = itsAssertions.GetStatementEnumerator();
while (statementEnumerator.MoveNext())
{
ResourceStatement statement = (ResourceStatement)statementEnumerator.Current;
if (statement.GetSubject().Equals(internalSubjectResource))
{
statementsToRemove.Add(statement);
}
}
foreach (ResourceStatement statement in statementsToRemove)
{
itsAssertions.Remove(statement);
}
Add(description);
}
/// <summary>
/// Runs the task
/// </summary>
/// <returns></returns>
protected override TaskResult RunTaskInternal()
{
MimeTypeDefinition def = MimeTypesHelper.GetDefinitionsByFileExtension(MimeTypesHelper.GetTrueFileExtension(this._file)).FirstOrDefault(d => d.CanWriteRdfDatasets);
if (def == null)
{
throw new RdfOutputException("Cannot Export the Store to the selected File since dotNetRDF was unable to select a writer to use based on the File Extension");
}
IStoreWriter writer = def.GetRdfDatasetWriter();
if (writer is IMultiThreadedWriter)
{
((IMultiThreadedWriter)writer).UseMultiThreadedWriting = false;
}
TripleStore store = new TripleStore();
if (writer is TriXWriter)
{
//For TriX must load all into memory and then write out all at once
foreach (Uri u in this.ListGraphs())
{
Graph g = new Graph();
this._manager.LoadGraph(g, u);
g.BaseUri = u;
store.Add(g);
this.Information = "Loading into memory prior to export, loaded " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s) so far...";
if (this.HasBeenCancelled)
{
this.Information = "Export Cancelled";
return(new TaskResult(true));
}
}
this.Information = "Exporting Data all at once, have " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s) to export...";
writer.Save(store, new StreamWriter(this._file));
this.Information = "Exported " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s)";
}
else
{
if (File.Exists(this._file))
{
File.Delete(this._file);
}
//For non-TriX formats assume it is safe to append one Graph at a time to the file
int graphCount = 0, tripleCount = 0;
foreach (Uri u in this.ListGraphs())
{
using (FileStream stream = new FileStream(this._file, FileMode.Append))
{
if (writer is IFormatterBasedWriter)
{
//Stream via a WriteThroughHandler
this.Information = "Stream Exporting Graph " + (u != null ? u.AbsoluteUri : "Default");
WriteThroughHandler handler = new WriteThroughHandler(((IFormatterBasedWriter)writer).TripleFormatterType, new StreamWriter(stream), true);
ExportProgressHandler progHandler = new ExportProgressHandler(handler, this, tripleCount);
this._manager.LoadGraph(progHandler, u);
graphCount++;
tripleCount = progHandler.TripleCount;
this.Information = "Finished Stream Exporting Graph " + (u != null ? u.AbsoluteUri : "Default") + ", exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s) so far...";
}
else
{
//Load Graph into memory
Graph g = new Graph();
g.BaseUri = u;
this.Information = "Loading Graph " + (u != null ? u.AbsoluteUri : "Default");
this._manager.LoadGraph(g, u);
g.BaseUri = u;
if (this.HasBeenCancelled)
{
stream.Close();
this.Information = "Export Cancelled, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
return(new TaskResult(true));
}
graphCount++;
tripleCount += g.Triples.Count;
//Save it
store.Add(g);
writer.Save(store, new StreamWriter(stream, def.Encoding));
store.Remove(u);
this.Information = "Exporting Data graph by graph, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s) so far...";
}
//Check for cancellation
if (this.HasBeenCancelled)
{
stream.Close();
this.Information = "Export Cancelled, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
return(new TaskResult(true));
}
}
}
this.Information = "Exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
}
return(new TaskResult(true));
}
public void SparqlViewGraphScope()
{
try
{
TripleStore store = new TripleStore();
SparqlView view = new SparqlView("CONSTRUCT { ?s ?p ?o } FROM <http://example.org/data> WHERE { ?s ?p ?o . FILTER(IsLiteral(?o)) }", store);
view.BaseUri = new Uri("http://example.org/view");
store.Add(view);
Console.WriteLine("SPARQL View Empty");
TestTools.ShowGraph(view);
Console.WriteLine();
//Load a Graph into the Store to cause the SPARQL View to update
Graph g = new Graph();
FileLoader.Load(g, "InferenceTest.ttl");
g.BaseUri = new Uri("http://example.org/data");
store.Add(g);
Thread.Sleep(200);
if (view.Triples.Count == 0) view.UpdateView();
int lastCount = view.Triples.Count;
Console.WriteLine("SPARQL View Populated");
TestTools.ShowGraph(view);
Assert.IsTrue(view.Triples.Count > 0, "View should have updated to contain some Triples");
//Load another Graph with a different URI into the Store
Graph h = new Graph();
h.BaseUri = new Uri("http://example.org/2");
FileLoader.Load(h, "Turtle.ttl");
store.Add(h);
Thread.Sleep(200);
view.UpdateView();
Assert.IsTrue(view.Triples.Count == lastCount, "View should not have changed since the added Graph is not in the set of Graphs over which the query operates");
//Remove this Graph and check the View still doesn't change
store.Remove(h.BaseUri);
Thread.Sleep(200);
view.UpdateView();
Assert.IsTrue(view.Triples.Count == lastCount, "View should not have changed since the removed Graph is not in the set of Graphs over which the query operates");
}
catch (RdfQueryException queryEx)
{
TestTools.ReportError("Query Error", queryEx, true);
}
catch (RdfException ex)
{
TestTools.ReportError("Error", ex, true);
}
}
