public void SparqlResultSetToDataTable9()
{
SparqlResultSet results = new SparqlResultSet();
try
{
DataTable table = results.ToDataTable();
Assert.True(false, "Should have thrown an InvalidCastException");
}
catch (InvalidCastException ex)
{
Assert.Equal(SparqlResultsType.Unknown, results.ResultsType);
Console.WriteLine("Errored as expected");
Console.WriteLine();
TestTools.ReportError("Invalid Cast", ex);
}
}
public void SparqlResultSetToDataTable8()
{
SparqlResultSet rset = new SparqlResultSet(false);
DataTable table = rset.ToDataTable();
Assert.True(rset.ResultsType == SparqlResultsType.Boolean);
Assert.Equal(table.Columns.Count, 1);
Assert.Equal(table.Rows.Count, 1);
Assert.False((bool)table.Rows[0]["ASK"], "Should be false");
foreach (DataRow row in table.Rows)
{
foreach (DataColumn col in table.Columns)
{
Object temp = row[col];
Console.Write(col.ColumnName + " = " + ((temp != null) ? temp.ToString() : String.Empty) + " , ");
}
Console.WriteLine();
}
}
public void SparqlResultSetToDataTable6()
{
String query = "ASK WHERE {?s <http://example.org/noSuchPredicate> ?o}";
SparqlQueryParser parser = new SparqlQueryParser();
SparqlQuery q = parser.ParseFromString(query);
Graph g = new Graph();
FileLoader.Load(g, "resources\\InferenceTest.ttl");
Object results = g.ExecuteQuery(q);
if (results is SparqlResultSet)
{
SparqlResultSet rset = (SparqlResultSet)results;
DataTable table = rset.ToDataTable();
Assert.True(rset.ResultsType == SparqlResultsType.Boolean);
Assert.Equal(table.Columns.Count, 1);
Assert.Equal(table.Rows.Count, 1);
Assert.False((bool)table.Rows[0]["ASK"], "Should be false");
foreach (DataRow row in table.Rows)
{
foreach (DataColumn col in table.Columns)
{
Object temp = row[col];
Console.Write(col.ColumnName + " = " + ((temp != null) ? temp.ToString() : String.Empty) + " , ");
}
Console.WriteLine();
}
}
else
{
Assert.True(false, "Query should have returned a Result Set");
}
}
public void SparqlResultSetToDataTable4()
{
String query = "PREFIX ex: <http://example.org/vehicles/> SELECT * WHERE {?s a ex:Car . OPTIONAL { ?s ex:Speed ?speed }}";
SparqlQueryParser parser = new SparqlQueryParser();
SparqlQuery q = parser.ParseFromString(query);
Graph g = new Graph();
FileLoader.Load(g, "resources\\InferenceTest.ttl");
Object results = g.ExecuteQuery(q);
if (results is SparqlResultSet)
{
SparqlResultSet rset = (SparqlResultSet)results;
DataTable table = rset.ToDataTable();
Assert.Equal(rset.Variables.Count(), table.Columns.Count);
Assert.Equal(rset.Count, table.Rows.Count);
foreach (DataRow row in table.Rows)
{
foreach (DataColumn col in table.Columns)
{
Object temp = row[col];
Console.Write(col.ColumnName + " = " + ((temp != null) ? temp.ToString() : String.Empty) + " , ");
}
Console.WriteLine();
}
}
else
{
Assert.True(false, "Query should have returned a Result Set");
}
}
