UnaryOperation: MDCalculationFormulaUnaryOperation;
The UnaryOperation property determines a type of unary operation used as a formula operand.
Executing the example requires that the repository contains multidimensional calculation on database server with the MDCalc_1 identifier.
Sub UserProc;
Var
MB: IMetabase;
MDInst: IMDCalculationInstance;
Formulas: IMDCalculationFormulas;
Formula: IMDCalculationFormula;
FormulaExpression: IMDCalculationFormulaExpression;
Source: IMDCalculationSourceInstance;
Dest: IMDCalculationDestinationInstance;
Slices: IMDCalculationSlicesInstance;
Operand: IMDCalculationFormulaOperand;
DestCoord, SourceCoord: IMatrixCoord;
ElementKey, SourceElKey: IMDCalculationFormulaElementKey;
UnaryOperand: IMDCalculationFormulaUnaryOperation;
CoordOperand: IMDCalculationFormulaElement;
i: Integer;
Begin
MB := MetabaseClass.Active;
MDInst := MB.ItemById("MDCalc_1").Open(Null) As IMDCalculationInstance;
Formulas := MDInst.CreateFormulas;
Formula := Formulas.Add;
FormulaExpression := Formula.Expression;
Source := MDInst.Sources.Item(0);
Slices := Source.Slices;
// Set the - sign as an operand
Operand := FormulaExpression.CreateItem(MDCalculationFormulaOperandKind.UnaryOperation);
UnaryOperand := Operand As IMDCalculationFormulaUnaryOperation;
UnaryOperand.UnaryOperation := MDCalculationFormulaUnaryOperation.Minus;
FormulaExpression.InsertItem(Operand);
// Set the coordinate in the source as an operand
Operand := FormulaExpression.CreateItem(MDCalculationFormulaOperandKind.Element);
SourceCoord := Source.NewCoord;
For i := 0 To Slices.Count - 1 Do
SourceCoord.Item(i) := 0;
End For;
SourceElKey := Source.CoordToKey(SourceCoord);
SourceElKey.FactIndex := 0;
CoordOperand := Operand As IMDCalculationFormulaElement;
CoordOperand.Key := SourceElKey;
FormulaExpression.InsertItem(Operand);
// Coordinate, by which formula is written to data consumer
Dest := MDInst.Destination;
DestCoord := Dest.NewCoord;
Slices := Dest.Slices;
For i := 0 To Slices.Count - 1 Do
DestCoord.Item(i) := 0;
End For;
ElementKey := Dest.CoordToKey(DestCoord);
ElementKey.FactIndex := 0;
MDInst.WriteFormulas(ElementKey, Formulas);
End Sub UserProc;
After executing the example the formula is set for the specified data consumer element. The value by coordinate in the data consumer is calculated by the formula: 0 - the value by coordinate in the data source.
See also: