View resultsExecute(Selection: IDimSelectionSet): IMatrix;
Selection - selection of dimensions, by which calculation is executed.
The Execute method calculates aggregation and returns matrix with calculated data. This matrix contains an additional dimension that contains totals of aggregation. A coordinate in additional dimension corresponds to aggregation index.
NOTE. The coordinate is -1 in the matrix of aggregation calculation for the dimensions, by which the Other aggregate is calculated (IStandardCubeServerAggregationDimension.Others).
Executing the example requires that the repository contains a standard cube with the OBJ_CUBE identifier. This cube must contain two dimensions.
Sub Main;
Var
MB: IMetabase;
MObj: IMetabaseObject;
StandCub: IStandardCube;
CubeInst: ICubeInstance;
CubeStandInst: IStandardCubeInstance;
Aggregator: IStandardCubeServerAggregator;
StdDim: IStandardCubeDimension;
StdDims: IStandardCubeDimensions;
Aggregation: IStandardCubeServerAggregation;
FactDimension: IDimInstance;
Iter: IDimIterator;
DimsEx: IStandardCubeServerAggregationDimensionsEx;
AggDim: IStandardCubeServerAggregationDimension;
MatrDS: IMatrixDataSource;
DimSS: IDimSelectionSet;
Matr: IMatrix;
Coord: IMatrixCoord;
i: Integer;
MatrIter: IMatrixIterator;
s: String;
Begin
MB := MetabaseClass.Active;
MObj := MB.ItemById("OBJ_CUBE").Bind;
StandCub := MObj As IStandardCube;
CubeInst := MObj.Open(Null) As ICubeInstance;
CubeStandInst := CubeInst As IStandardCubeInstance;
StdDims := StandCub.Dimensions;
// Set up aggregation method
Aggregator := CubeStandInst.CreateAggregator;
FactDimension := StandCub.FactDimension.OpenDimension;
Iter := FactDimension.Elements.Elements.Iterator;
Iter.First;
While Iter.Next Do
Aggregation := Aggregator.Aggregations.Add;
Aggregation.AggregationType := CubeFactBindingAggregationType.Sum;
Aggregation.FactKey := FactDimension.Indexes.PrimaryIndex.IndexAttributesValues(Iter.Element);
End While;
// Determine dimensions for aggregation
DimsEx := Aggregator.Dimensions;
AggDim := DimsEx.Item(0);
AggDim.GroupIndex := 0;
AggDim.Position := 0;
AggDim.Others := True;
AggDim := DimsEx.Item(1);
AggDim.GroupIndex := 1;
AggDim.Position := 0;
AggDim.Totals := True;
// Selection for aggregation calculation
MatrDS := CubeInst.Destinations.DefaultDestination As IMatrixDataSource;
DimSS := MatrDS.CreateDimSelectionSet;
For i := 0 To DimSS.Count - 1 Do
DimSS.Item(i).SelectAll;
End For;
// Calculate aggregation
Matr := Aggregator.Execute(DimSS);
// Dsplay aggregation results
MatrIter := Matr.CreateIterator;
MatrIter.Move(IteratorDirection.First);
If MatrIter.Valid Then
For i := 0 To StdDims.Count - 1 Do
StdDim := StdDims.Item(i);
If StdDim.FactDimension Then
Debug.Write("Fact ");
Else
Debug.Write(StdDim.OpenDimension.Name + " ");
End If;
End For;
Debug.Write("Aggregation ");
Debug.WriteLine("Value");
Coord := Matr.CreateCoord;
While MatrIter.Valid Do
MatrIter.PutCurrentPos(Coord);
s := "";
For i := 0 To Coord.Count - 1 Do
s := s + Coord.Item(i).ToString + " ";
End For;
s := s + "= " + MatrIter.Value;
Debug.WriteLine(s);
MatrIter.Move(IteratorDirection.Next);
End While;
Else
Debug.WriteLine("No data");
End If;
End Sub Main;
After executing the example sum by dimensions is calculated for the cube facts. The calculation matrix is displayed in the console window.
See also:
