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("SQLStoreTest.txt");
Console.SetOut(output);
Console.WriteLine("## SQL Store Test");
//Set default parameters if insufficient supplied
if (args.Length < 5)
{
args = new string[] { "read", "10", "false", "false", "8" };
}
try
{
//Read in the Parameters
String testMode = args[0].ToLower();
if (testMode != "read" && testMode != "write")
{
testMode = "read";
}
int runs = Int32.Parse(args[1]);
if (runs < 1) runs = 1;
bool reuseManager = Boolean.Parse(args[2]);
bool useThreadedManager = Boolean.Parse(args[3]);
int threads = Int32.Parse(args[4]);
if (threads < 1) threads = 4;
#region Basic Tests
//Do some basic operations
Console.WriteLine("# Basic Read and Write of normal Graphs");
//Read in a Test Graph from a Turtle File
Graph g = new Graph();
g.BaseUri = new Uri("http://www.dotnetrdf.org/Tests/SQLStore/");
TurtleParser ttlparser = new TurtleParser();
ttlparser.Load(g, "InferenceTest.ttl");
Console.WriteLine("Loaded the InferenceTest.ttl file as the Test Graph");
Console.WriteLine("Attempting to save into the SQL Store");
//Save to a Store using SqlWriter
SqlWriter sqlwriter = new SqlWriter("dotnetrdf_experimental", "sa", "20sQl08");
sqlwriter.Save(g, false);
Console.WriteLine("Saved to the SQL Store");
//Read back from the Store using SqlReader
IGraph h = new Graph();
Console.WriteLine("Trying to read the Graph back from the SQL Store");
SqlReader sqlreader = new SqlReader("dotnetrdf_experimental", "sa", "20sQl08");
h = sqlreader.Load("http://www.dotnetrdf.org/Tests/SQLStore/");
Console.WriteLine("Read from SQL Store OK");
foreach (String prefix in h.NamespaceMap.Prefixes)
{
Console.WriteLine(prefix + ": <" + h.NamespaceMap.GetNamespaceUri(prefix).ToString() + ">");
}
Console.WriteLine();
foreach (Triple t in h.Triples)
{
Console.WriteLine(t.ToString());
}
Console.WriteLine("# Test Passed");
Console.WriteLine();
//Demonstrate that the SqlGraph persists stuff to the Store
Console.WriteLine("# Advanced Read and Write with a SQLGraph");
SqlGraph s = new SqlGraph(new Uri("http://www.dotnetrdf.org/Tests/SQLStore"), "dotnetrdf_experimental", "sa", "20sQl08");
Console.WriteLine("Opened the SQL Graph OK");
INode type = s.CreateUriNode("rdf:type");
s.Assert(new Triple(type, type, type));
Console.WriteLine("Asserted something");
s.NamespaceMap.AddNamespace("ex", new Uri("http://www.example.org/"));
Console.WriteLine("Added a Namespace");
s.NamespaceMap.AddNamespace("ex", new Uri("http://www.example.org/changedNamespace/"));
Console.WriteLine("Changed a Namespace");
Console.WriteLine("Reopening to see if stuff gets loaded correctly");
s = new SqlGraph(new Uri("http://www.dotnetrdf.org/Tests/SQLStore"), "dotnetrdf_experimental", "sa", "20sQl08");
foreach (String prefix in s.NamespaceMap.Prefixes)
{
Console.WriteLine(prefix + ": <" + s.NamespaceMap.GetNamespaceUri(prefix).ToString() + ">");
}
Console.WriteLine();
foreach (Triple t in s.Triples)
{
Console.WriteLine(t.ToString());
}
Console.WriteLine();
s.Retract(new Triple(type, type, type));
Console.WriteLine("Retracted something");
foreach (Triple t in s.Triples)
{
Console.WriteLine(t.ToString());
}
#endregion
#region Benchmarking Tests
Console.WriteLine();
Console.WriteLine("# Performance Benchmarking for a Large TripleStore");
Console.WriteLine("Performing " + runs + " Runs to gauge average performance");
int totalTriples = 0;
long totalTime = 0;
long diff;
DateTime start, finish;
int triples;
if (testMode.Equals("read"))
{
//Read Benchmark
Console.WriteLine("Read Benchmarking");
if (reuseManager)
{
Console.WriteLine("Reusing ISQLIOManager which should improve performance");
}
if (useThreadedManager)
{
Console.WriteLine("Using IThreadedSQLIOManager which should improve perfomance");
}
//Create the Manager
IThreadedSqlIOManager manager;
manager = new MicrosoftSqlStoreManager("localhost", "bbcone", "sa", "20sQl08");
if (reuseManager)
{
manager.PreserveState = true;
}
//Perform the Runs
for (int i = 1; i <= runs; i++)
{
Console.WriteLine("Run #" + i);
Debug.WriteLine("Run #" + i);
//Start Profiling
start = DateTime.Now;
Console.WriteLine("Starting Loading @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Start @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
//Set-up the Manager as required by the Test Options
ITripleStore bigstore;
if (reuseManager)
{
if (useThreadedManager)
{
bigstore = new ThreadedSqlTripleStore((IThreadedSqlIOManager)manager, threads);
}
else
{
bigstore = new SqlTripleStore(manager);
}
}
else
{
if (useThreadedManager)
{
bigstore = new ThreadedSqlTripleStore(manager, threads);
}
else
{
bigstore = new SqlTripleStore(manager);
}
}
//End Profiling
finish = DateTime.Now;
Console.WriteLine("Finished Loading @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Finish @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
//Increment Totals for final average calculations later
triples = bigstore.Triples.Count();
totalTriples += triples;
Console.WriteLine(triples + " Triples loaded");
//Compute Load Rate
diff = Microsoft.VisualBasic.DateAndTime.DateDiff(Microsoft.VisualBasic.DateInterval.Second, start, finish, Microsoft.VisualBasic.FirstDayOfWeek.Monday, Microsoft.VisualBasic.FirstWeekOfYear.System);
totalTime += diff;
Console.WriteLine("Load took " + diff + " seconds");
Console.WriteLine("Load Rate was " + triples / diff + " Triples/Second");
Debug.WriteLine("Load Rate was " + triples / diff + " Triples/Second");
Console.WriteLine();
bigstore.Dispose();
}
}
else
{
//Write Benchmark
Console.WriteLine("Write Benchmarking");
//Load in the Source Data from our Test Store
ITripleStore origstore;
IThreadedSqlIOManager readManager = new MicrosoftSqlStoreManager("localhost", "dotnetrdf_experimental", "sa", "20sQl08");
Console.WriteLine();
Console.WriteLine("Obtaining Test Data");
start = DateTime.Now;
Console.WriteLine("Starting Loading @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Start @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
//Do the Load
origstore = new ThreadedSqlTripleStore(readManager,8);
finish = DateTime.Now;
triples = origstore.Triples.Count();
Console.WriteLine("Finished Loading @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Finish @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
//Compute Load Rate
diff = Microsoft.VisualBasic.DateAndTime.DateDiff(Microsoft.VisualBasic.DateInterval.Second, start, finish, Microsoft.VisualBasic.FirstDayOfWeek.Monday, Microsoft.VisualBasic.FirstWeekOfYear.System);
Console.WriteLine("Load took " + diff + " seconds");
if (diff > 0)
{
Console.WriteLine("Load Rate was " + triples / diff + " Triples/Second");
Debug.WriteLine("Load Rate was " + triples / diff + " Triples/Second");
}
Console.WriteLine();
IThreadedSqlIOManager writeManager;
for (int i = 1; i <= runs; i++)
{
Console.WriteLine("Run #" + i);
Debug.WriteLine("Run #" + i);
//Create a New Manager for every write
writeManager = new MicrosoftSqlStoreManager("localhost", "write_test", "sa", "20sQl08");
//Create SqlWriter
ThreadedSqlStoreWriter writer = new ThreadedSqlStoreWriter();
//Start Profiling
start = DateTime.Now;
Console.WriteLine("Starting Loading @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Start @ " + start.ToString(TestSuite.TestSuiteTimeFormat));
//Write the Store
writer.Save(origstore, new ThreadedSqlIOParams(writeManager,threads));
//End Profiling
finish = DateTime.Now;
Console.WriteLine("Finished Loading @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
Debug.WriteLine("Finish @ " + finish.ToString(TestSuite.TestSuiteTimeFormat));
//Compute Load Rate
diff = Microsoft.VisualBasic.DateAndTime.DateDiff(Microsoft.VisualBasic.DateInterval.Second, start, finish, Microsoft.VisualBasic.FirstDayOfWeek.Monday, Microsoft.VisualBasic.FirstWeekOfYear.System);
totalTime += diff;
Console.WriteLine("Writing took " + diff + " seconds");
if (diff > 0)
{
Console.WriteLine("Write Rate was " + triples / diff + " Triples/Second");
Debug.WriteLine("Write Rate was " + triples / diff + " Triples/Second");
}
Console.WriteLine();
//Now need to clear the Database for the next Test
writeManager.Open(true);
writeManager.ExecuteNonQuery("DELETE FROM NODES");
writeManager.ExecuteNonQuery("DELETE FROM TRIPLES");
writeManager.ExecuteNonQuery("DELETE FROM GRAPH_TRIPLES");
writeManager.ExecuteNonQuery("DELETE FROM GRAPHS");
writeManager.ExecuteNonQuery("DELETE FROM NAMESPACES");
writeManager.ExecuteNonQuery("DELETE FROM NS_PREFIXES");
writeManager.ExecuteNonQuery("DELETE FROM NS_URIS");
writeManager.Close(true);
}
}
//Final Average Calculations
Console.WriteLine();
Console.WriteLine("Average Load Time was " + totalTime / runs + " seconds");
Console.WriteLine("Average Load Rate was " + totalTriples / totalTime + " Triples/Second");
#endregion
Console.WriteLine("# Tests Passed");
}
catch (System.Data.SqlClient.SqlException sqlEx)
{
reportError(output, "SQL Exception", sqlEx);
}
catch (IOException ioEx)
{
reportError(output, "IO Exception", ioEx);
}
catch (RdfParseException parseEx)
{
reportError(output, "Parsing Exception", parseEx);
}
catch (RdfException rdfEx)
{
reportError(output, "RDF Exception", rdfEx);
}
catch (Exception ex)
{
reportError(output, "Other Exception", ex);
}
output.Close();
}