IMsDeterministicTransform.Expression

Syntax

Expression: IExpression;

Description

The Expression property returns the object containing a model equation.

Example

Sub Main;

Var

MB: IMetabase;

CrInf: IMetabaseObjectCreateInfo;

MObj: IMetabaseObject;

Model: IMsModel;

Trans: IMsFormulaTransform;

Varr: IMsVariable;

VarTrans: IMsFormulaTransformVariable;

Tree: IMsFormulaTransformSlicesTree;

Slice: IMsFormulaTransformSlice;

Selector: IMsFormulaTransformSelector;

Formula: IMsFormula;

Determ: IMsDeterministicTransform;

TransVar: IMsFormulaTransformVariable;

TermX1: IMsFormulaTerm;

Begin

MB := MetabaseClass.Active;

CrInf := Mb.CreateCreateInfo;

CrInf.ClassId := MetabaseObjectClass.KE_CLASS_MSMODEL;

CrInf.Id := "New_Determ";

CrInf.Name := "New_Determ";

CrInf.Parent := Mb.ItemById("KONT_MODEL");

CrInf.Permanent := False;

MObj := Mb.CreateObject(CrInf).Edit;

Model := MObj As IMsModel;

Trans := Model.Transform;

Varr := MB.ItemByIdNamespace("Var_1", MB.ItemById("KONT_MODEL").Key).Bind As IMsVariable;

Model.Output.Add(Varr);

VarTrans := Trans.Outputs.Item(0);

Tree := VarTrans.SlicesTree(VarTrans);

Slice := Tree.CreateSlice(1);

Selector := Model.Transform.CreateSelector;

Selector.Slice := Slice;

Formula := Model.Transform.Transform(Selector);

Formula.Kind := MsFormulaKind.Deterministic;

Formula.Level := DimCalendarLevel.Year;

Determ := Formula.Method As IMsDeterministicTransform;

Varr := MB.ItemByIdNamespace("Var_Factor", MB.ItemById("KONT_MODEL").Key).Bind As IMsVariable;

Model.Input.Add(Varr);

TransVar := Model.Transform.Inputs.Item(0);

Slice := TransVar.SlicesTree(Null).CreateSlice(1);

TermX1 := Determ.Operands.Add(Slice);

TermX1.Inversion := MsInversion.DLog;

TermX1.InversionLag := MsInversionLag.PrecidingYear;

TermX1.UpdateSlice(TermX1.Slice, "-1");

Determ.Expression.AsString := "10 -" + Trans.SliceToTerm(TermX1.Slice, TermX1.Lag.AsString) + " * 3.14";

MObj.Save;

End Sub Main;

After executing the example the model that uses the method of determinate equation is created in the modeling container. The output variable and one input variable are added. The model equation is created on the input variable.