private void WritingTriGActual()
{
Graph g = new Graph();
g.LoadFromEmbeddedResource("VDS.RDF.Configuration.configuration.ttl");
g.BaseUri = null;
TripleStore store = new TripleStore();
store.Add(g);
TriGWriter writer = new TriGWriter();
System.IO.StringWriter strWriter = new System.IO.StringWriter();
writer.Save(store, new TextWriterParams(strWriter));
Console.WriteLine(strWriter.ToString());
Assert.IsFalse(strWriter.ToString().Equals(String.Empty));
}
public void WritingTriGUncompressedSingleThreaded()
{
Graph g = new Graph();
g.LoadFromEmbeddedResource("VDS.RDF.Configuration.configuration.ttl");
g.BaseUri = null;
TripleStore store = new TripleStore();
store.Add(g);
TriGWriter writer = new TriGWriter();
writer.UseMultiThreadedWriting = false;
writer.CompressionLevel = WriterCompressionLevel.None;
System.IO.StringWriter strWriter = new System.IO.StringWriter();
writer.Save(store, new TextWriterParams(strWriter));
Console.WriteLine(strWriter.ToString());
Assert.IsFalse(strWriter.ToString().Equals(String.Empty));
}
private void btnExport_Click(object sender, EventArgs e)
{
this.sfdExport.FilterIndex = this.cboExportFormat.SelectedIndex+1;
if (this.sfdExport.ShowDialog() == DialogResult.OK)
{
String destFile = this.sfdExport.FileName;
//Select the Writer
IStoreWriter writer;
switch (this.cboExportFormat.SelectedIndex)
{
case 0:
writer = new TriGWriter();
break;
case 1:
writer = new TriXWriter();
break;
case 2:
writer = new NQuadsWriter();
break;
default:
writer = new TriGWriter();
break;
}
//Check the Extension matches the output format
String ext = MimeTypesHelper.GetFileExtension(writer);
if (!Path.GetExtension(destFile).Equals("." + ext))
{
destFile = Path.Combine(Path.GetDirectoryName(destFile), Path.GetFileNameWithoutExtension(destFile) + "." + ext);
}
//Estimate Load Time
int graphTriples = Int32.Parse(this.lvwDBInfo.Items[3].SubItems[1].Text);
int loadTime = graphTriples / 25000;
if (MessageBox.Show("Are you sure you wish to export this Store? To do this your entire Store must first be loaded into memory - we estimate that this will take approximately " + loadTime + " seconds - and then it will be written to disk. Are you sure you wish to proceed?", "Confirm Export", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
//Export
try
{
System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();
timer.Start();
ThreadedSqlTripleStore store = new ThreadedSqlTripleStore(this._connection.ThreadedManager, 8, false);
timer.Stop();
double actualLoadTime = (double)timer.ElapsedMilliseconds / 1000d;
timer.Reset();
timer.Start();
writer.Save(store, new StreamParams(destFile));
timer.Stop();
double actualWriteTime = (double)timer.ElapsedMilliseconds / 1000d;
MessageBox.Show("Export completed successfully to file '" + destFile + "'\n\nLoad took " + actualLoadTime + " seconds - Writing took " + actualWriteTime + " seconds - Export took " + (actualLoadTime+actualWriteTime) + " seconds total", "Export Completed", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("Export failed due to the following error:\n" + ex.Message, "Export Failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
public static void Main(String[] args)
{
StreamWriter output = new StreamWriter("TriGTestSuite.txt");
Console.SetOut(output);
Console.WriteLine("## TriG Test Suite");
Console.WriteLine();
try
{
foreach (String file in Directory.GetFiles("trig_tests"))
{
if (Path.GetExtension(file) == ".trig")
{
Console.WriteLine("## Testing File " + Path.GetFileName(file));
try
{
//Parse in
TriGParser parser = new TriGParser();
TripleStore store = new TripleStore();
//parser.TraceTokeniser = true;
parser.Load(store, new StreamParams(file));
//Output the Triples
Console.WriteLine("# Parsed OK");
Console.WriteLine();
foreach (Triple t in store.Triples)
{
Console.WriteLine(t.ToString() + " from Graph <" + t.GraphUri.ToString() + ">");
}
Console.WriteLine();
//Write out
TriGWriter writer = new TriGWriter();
writer.HighSpeedModePermitted = false;
writer.Save(store, new StreamParams(file + ".out"));
//Parse back in again
TripleStore store2 = new TripleStore();
parser.Load(store2, new StreamParams(file + ".out"));
Console.WriteLine("# Parsed back in again");
if (store.Graphs.Count == store2.Graphs.Count)
{
Console.WriteLine("Correct number of Graphs");
}
else
{
Console.WriteLine("Incorrect number of Graphs - Expected " + store.Graphs.Count + " - Actual " + store2.Graphs.Count);
}
if (store.Triples.Count() == store2.Triples.Count())
{
Console.WriteLine("Correct number of Triples");
}
else
{
Console.WriteLine("Incorrect number of Triples - Expected " + store.Triples.Count() + " - Actual " + store2.Triples.Count());
}
}
catch (RdfParseException parseEx)
{
HandleError("Parser Error", parseEx);
}
catch (RdfException rdfEx)
{
HandleError("RDF Error", rdfEx);
}
catch (Exception ex)
{
HandleError("Other Error", ex);
}
finally
{
Console.WriteLine();
}
}
}
}
catch (RdfParseException parseEx)
{
HandleError("Parser Error", parseEx);
}
catch (Exception ex)
{
HandleError("Other Error", ex);
}
finally
{
output.Close();
}
}
public void Dispose()
{
//Create all of the directories required for the file
var f = new FileInfo(_outputPath);
f.Directory.Create();
if (this._outputFormat == ERdfFormat.RdfXml)
{
using (XmlTextWriter xmlWriter = new XmlTextWriter(_outputPath, new UTF8Encoding(false)))
//Set encoding
{
_output.Save(xmlWriter);
}
}
else if (this._outputFormat == ERdfFormat.TriG)
{
string fileNameAsTrig = GetFilePathBasedOnFormat();
var outparams = new StreamParams(fileNameAsTrig);
outparams.Encoding = Encoding.UTF8;
var writer = new TriGWriter();
if (_store == null)
{
var g = GetXmlDocumentAsGraph();
_store = new TripleStore();
_store.Add(g, true);
}
writer.Save(_store, outparams);
}
else if (this._outputFormat == ERdfFormat.Turtle)
{
var g = GetXmlDocumentAsGraph();
string filePathForFormat = GetFilePathBasedOnFormat();
var writer = new TurtleWriter(TurtleSyntax.W3C);
writer.Save(g, filePathForFormat);
}
else if (this._outputFormat == ERdfFormat.NTriples)
{
var g = GetXmlDocumentAsGraph();
string filePathForFormat = GetFilePathBasedOnFormat();
var writer = new NTriplesWriter();
writer.Save(g, filePathForFormat);
}
else if (this._outputFormat == ERdfFormat.N3)
{
var g = GetXmlDocumentAsGraph();
string filePathForFormat = GetFilePathBasedOnFormat();
var writer = new Notation3Writer();
writer.Save(g, filePathForFormat);
}
else if (this._outputFormat == ERdfFormat.NQuads)
{
string filePathForFormat = GetFilePathBasedOnFormat();
var outparams = new StreamParams(filePathForFormat);
outparams.Encoding = Encoding.UTF8;
if (_store == null)
{
var g = GetXmlDocumentAsGraph();
_store = new TripleStore();
_store.Add(g, true);
}
var writer = new NQuadsWriter();
writer.Save(_store, outparams);
}
//make sure it's not null - can happen if no graphs have yet to be asserted!!
if (_store != null)
{
foreach (var graph in _store.Graphs)
{
graph.Dispose();
}
_store.Dispose();
GC.Collect();
}
}