public void WritingNTriplesVsTurtleNonAsciiCharsSpeed()
{
StringBuilder builder = new StringBuilder();
for (int i = 128; i <= 255; i++)
{
builder.Append((char)i);
}
INode n = new NodeFactory().CreateLiteralNode(builder.ToString());
const int repeatCount = 10000;
// Write 10,000 times with NTriplesFormatter
Stopwatch timer = new Stopwatch();
INodeFormatter formatter = new NTriplesFormatter();
System.IO.StringWriter strWriter = new System.IO.StringWriter();
timer.Start();
for (var i = 0; i < repeatCount; i++)
{
strWriter.WriteLine(formatter.Format(n));
}
timer.Stop();
Console.WriteLine("NTriples Formatter Time Elapsed: " + timer.Elapsed);
TimeSpan ntriplesTime = timer.Elapsed;
timer.Reset();
// Write 10,000 times with NTriplesFormatter in RDF 1.1 mode
formatter = new NTriplesFormatter(NTriplesSyntax.Rdf11);
strWriter = new System.IO.StringWriter();
timer.Start();
for (var i = 0; i < repeatCount; i++)
{
strWriter.WriteLine(formatter.Format(n));
}
timer.Stop();
Console.WriteLine("NTriples Formatter (RDF 1.1) Time Elapsed: " + timer.Elapsed);
//TimeSpan ntriples11Time = timer.Elapsed;
timer.Reset();
// Write and check round trip with Turtle and compare speed
strWriter = new System.IO.StringWriter();
formatter = new UncompressedTurtleFormatter();
timer.Start();
for (var i = 0; i < repeatCount; i++)
{
strWriter.WriteLine(formatter.Format(n));
}
timer.Stop();
Console.WriteLine("Turtle Write Time Elapsed: " + timer.Elapsed);
TimeSpan turtleTime = timer.Elapsed;
// Compare Speed
Assert.IsTrue(turtleTime.CompareTo(ntriplesTime) == -1);
}
private string ReportGraphDiff(GraphDiffReport gd)
{
var sb = new StringBuilder();
var formatter = new UncompressedTurtleFormatter();
var missingTriples = gd.RemovedTriples.ToList();
if (missingTriples.Any())
{
sb.Append($"{missingTriples.Count} triples expected and not found:\n");
foreach (var t in missingTriples)
{
sb.Append("\t");
sb.AppendLine(t.ToString(formatter));
}
}
var unexpectedTriples = gd.AddedTriples.ToList();
if (unexpectedTriples.Any())
{
sb.Append($"{unexpectedTriples.Count} triples found but not expected:\n");
foreach (var t in unexpectedTriples)
{
sb.Append("\t");
sb.AppendLine(t.ToString(formatter));
}
}
if (gd.RemovedMSGs.Any())
{
var unexpectedGraphs = gd.RemovedMSGs.ToList();
sb.Append($"{unexpectedGraphs.Count} subgraphs expected and not found:\n");
foreach (var t in unexpectedGraphs.SelectMany(g => g.Triples))
{
sb.Append("\t");
sb.AppendLine(t.ToString(formatter));
}
}
if (gd.AddedMSGs.Any())
{
var missingGraphs = gd.AddedMSGs.ToList();
sb.Append($"{missingGraphs.Count} subgraphs unexpected:\n");
foreach (var t in missingGraphs.SelectMany(g => g.Triples))
{
sb.Append("\t");
sb.AppendLine(t.ToString(formatter));
}
}
return(sb.ToString());
}
