internal Stats.StatResult GetStatFunctionResult(Stats.StatFunction statFunction, DataGridCollectionView view)
{
if (!m_statFunctionValues.ContainsKey(statFunction))
{
this.CalculateStatFunctionValue(statFunction, view);
}
return(m_statFunctionValues[statFunction]);
}
protected internal virtual bool IsEquivalent(StatFunction statFunction)
{
if (statFunction == null)
{
return(false);
}
return((this.GetType() == statFunction.GetType()) &&
(this.SourcePropertyName == statFunction.SourcePropertyName));
}
internal static bool AreEquivalents(StatFunction statFunctionA, StatFunction statFunctionB)
{
if ((statFunctionA != null) && (statFunctionB != null))
{
return(statFunctionA.IsEquivalent(statFunctionB));
}
else
{
return((statFunctionA == null) && (statFunctionB == null));
}
}
private static StatResult RunStatFunction(
StatFunction statFunction,
Type[] dataTypes,
object[] valuesX,
object[] valuesY)
{
statFunction.InitializeAccumulationTypes(dataTypes);
statFunction.StartCalculation();
statFunction.Reset();
try
{
if (statFunction.PrerequisiteFunctions != null && statFunction.PrerequisiteFunctions.Length > 0)
{
StatResult[] preValues = new StatResult[statFunction.PrerequisiteFunctions.Length];
for (int i = 0; i < statFunction.PrerequisiteFunctions.Length; i++)
{
preValues[i] = StatFunction.RunStatFunction(statFunction.PrerequisiteFunctions[i], dataTypes, valuesX, valuesY);
if (preValues[i].Value is Exception)
{
throw ( Exception )preValues[i].Value;
}
}
statFunction.InitializePrerequisites(preValues);
}
if (statFunction.RequiresAccumulation)
{
for (int i = 0; i < valuesX.Length; i++)
{
if (valuesY == null)
{
statFunction.Accumulate(new object[] { valuesX[i] });
}
else
{
statFunction.Accumulate(new object[] { valuesX[i], valuesY[i] });
}
}
}
statFunction.EndCalculation();
return(statFunction.GetResult());
}
catch (Exception ex)
{
return(new StatResult(ex));
}
}
protected internal virtual bool IsEquivalent(StatFunction statFunction)
{
if (object.ReferenceEquals(statFunction, null))
{
return(false);
}
if (object.ReferenceEquals(statFunction, this))
{
return(true);
}
return((this.GetType() == statFunction.GetType()) &&
(this.SourcePropertyName == statFunction.SourcePropertyName));
}
internal object GetStatFunctionValue(string propertyName)
{
DataGridCollectionView view = this.GetCollectionView();
Debug.Assert(view != null);
if (view == null)
{
return(null);
}
Stats.StatFunction statFunction = view.StatFunctions[propertyName];
Debug.Assert(view != null);
if (statFunction == null)
{
return(null);
}
return(this.GetStatFunctionResult(statFunction, view).Value);
}
private static StatResult RunStatFunction(StatFunction statFunction, Type[] dataTypes, params object[] values)
{
return(StatFunction.RunStatFunction(statFunction, dataTypes, values, null));
}
protected internal virtual void InitializeFromInstance(StatFunction source)
{
this.SourcePropertyName = source.SourcePropertyName;
}
internal static bool AreEquivalents( StatFunction statFunctionA, StatFunction statFunctionB )
{
if( ( statFunctionA != null ) && ( statFunctionB != null ) )
{
return statFunctionA.IsEquivalent( statFunctionB );
}
else
{
return ( statFunctionA == null ) && ( statFunctionB == null );
}
}
protected internal virtual bool IsEquivalent( StatFunction statFunction )
{
if( statFunction == null )
return false;
return ( this.GetType() == statFunction.GetType() ) &&
( this.SourcePropertyName == statFunction.SourcePropertyName );
}
protected internal virtual void InitializeFromInstance( StatFunction source )
{
this.SourcePropertyName = source.SourcePropertyName;
}
private void CalculateStatFunctionValue(Stats.StatFunction statFunction, DataGridCollectionView view)
{
m_statFunctionValues[statFunction] = new Stats.StatResult(
new InvalidOperationException(Log.NotToolkitStr("Statistical functions"))
);
}
private static StatResult RunStatFunction(
StatFunction statFunction,
Type[] dataTypes,
object[] valuesX,
object[] valuesY )
{
statFunction.InitializeAccumulationTypes( dataTypes );
statFunction.StartCalculation();
statFunction.Reset();
try
{
if( statFunction.PrerequisiteFunctions != null && statFunction.PrerequisiteFunctions.Length > 0 )
{
StatResult[] preValues = new StatResult[ statFunction.PrerequisiteFunctions.Length ];
for( int i = 0; i < statFunction.PrerequisiteFunctions.Length; i++ )
{
preValues[ i ] = StatFunction.RunStatFunction( statFunction.PrerequisiteFunctions[ i ], dataTypes, valuesX, valuesY );
if( preValues[ i ].Value is Exception )
throw ( Exception )preValues[ i ].Value;
}
statFunction.InitializePrerequisites( preValues );
}
if( statFunction.RequiresAccumulation )
{
for( int i = 0; i < valuesX.Length; i++ )
{
if( valuesY == null )
{
statFunction.Accumulate( new object[] { valuesX[ i ] } );
}
else
{
statFunction.Accumulate( new object[] { valuesX[ i ], valuesY[ i ] } );
}
}
}
statFunction.EndCalculation();
return statFunction.GetResult();
}
catch( Exception ex )
{
return new StatResult( ex );
}
}
private static StatResult RunStatFunction( StatFunction statFunction, Type[] dataTypes, params object[] values )
{
return StatFunction.RunStatFunction( statFunction, dataTypes, values, null );
}
protected internal virtual bool IsEquivalent( StatFunction statFunction )
{
if( object.ReferenceEquals( statFunction, null ) )
return false;
if( object.ReferenceEquals( statFunction, this ) )
return true;
return ( this.GetType() == statFunction.GetType() ) &&
( this.SourcePropertyName == statFunction.SourcePropertyName );
}
