IStandardCubeServerAggregation.CustomAggregateFunction

Syntax

CustomAggregateFunction: String;

Description

The CustomAggregateFunction property determines a custom method of aggregation calculation.

Comments

This property is taken into account if the IStandardCubeServerAggregation.AggregationType property is set to CubeFactBindingAggregationType.Custom.

Example

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.Custom;

Aggregation.CustomAggregateFunction := "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.

View results