IMsCalculationChainEntries.AddTargetProblem

Syntax

AddTargetProblem(TargetProblem: IMsTargetProblem;
Level: DimCalendarLevel): IMsCalculationChainTarget;

Parameters

TargetProblem. Criterion problem, for which criterion function is added.

Level. Calendar frequency of added criterion function.

Description

The AddTargetProblem method adds a criterion function to calculation chain of metamodel.

Comments

It is necessary to add a criterion function to calculation chain if modeling problem being set up will be used to work in the web application.

If TargetProblem is set to Null, the criterion function will be created automatically and will be added to the collection of problem additional parameters. To set up parameters of the created criterion function, use the IMsCalculationChainTarget.TargetProblem property.

After adding a criterion function to calculation chain, set optimization problem scenario.

Example

Executing the example requires that the repository contains a modeling container with the MS identifier containing a modeling problem with the CHAIN_TARGET_CONSTRANT identifier. This problem must be used in the web application and contain several scenarios.

Add links to the Dimensions, Metabase, Ms system assemblies.

Sub UserProc;
Var
    mb: IMetabase;
    MsObj: IMetabaseObjectDescriptor;
    Ms: IMsModelSpace;
    Problem: IMsProblem;
    MetaModel: IMsMetaModel;
    CalcChain: IMsCalculationChainEntries;
    Transform: IMsFormulaTransform;
    TransformVarables: IMsFormulaTransformVariables;
    TransVar: IMsFormulaTransformVariable;
    Slice: IMsFormulaTransformSlice;
    Target: IMsTargetProblem;
    AdditionalDetails: IMsProblemDetailsArray;
    MetaTarget: IMsCalculationChainTarget;
    OperandTerm: IMsFormulaTerm;
    exVar: Boolean;
    MetaVisual: IMsMetaModelVisualController;
    VarOutp: IMsCalculationChainVariable;
    VarEx: Boolean;
    InVarKey, InModelKey: Integer;
    InpKeys: Array[1] Of Integer;
    SimpleModel: IMsModel;
    Operands: IMsFormulaTermList;
Begin
    // Get current repository
    mb := MetabaseClass.Active;
    // Get modeling container
    MsObj := mb.ItemById("MS");
    Ms := MsObj.Bind As IMsModelSpace;
    // Get modeling problem
    Problem := mb.ItemByIdNamespace("CHAIN_TARGET_CONSTRANT", MsObj.Key).Edit As IMsProblem;
    // Get calculation chain and clear it
    MetaModel := Problem.EditMetaModel;
    CalcChain := MetaModel.CalculationChain;
    CalcChain.Clear;
    // If required, create an internal time series database for metamodel
    MetaVisual := MetaModel.VisualController;
    If Not MetaVisual.HasVariableRubricator Then
        MetaVisual.HasVariableRubricator := True;
    End If;
    // Create an internal variable
    VarOutp := MetaVisual.CreateVariable("Internal variable", "", DimCalendarLevel.Year, VarEx);
    InpKeys[0] := VarOutp.Key;
    // Create an internal model
    SimpleModel := MetaVisual.CreateSimpleModel(-1, InpKeys, VarOutp.Key, MsFormulaKind.LinearRegression, "", InVarKey, InModelKey, -1, -1, True);
    // Create a criterion problem
    Target := New MsTargetProblem.Create;
    // Set criterion problem parameters
    AdditionalDetails := Problem.AdditionalDetails;
    AdditionalDetails.Clear;
    AdditionalDetails.AddDetails(Target, VarOutp.Slice);
    // Set optimization problem scenario
    Target.OptimisticScenario := Problem.Scenarios.Item(0);
    // Add criterion function variables
    Operands := Target.Operands;
    Transform := SimpleModel.Transform;
    TransformVarables := Transform.Outputs;
    TransVar := TransformVarables.Item(0);
    Slice := TransVar.Slices.Item(0);
    OperandTerm := Operands.Add(Slice);
    // Set criterion function
    Target.CriterionFunction.AsString := OperandTerm.TermToInnerText;
    // Add criterion problem to calculation chain
    MetaTarget := CalcChain.AddTargetProblem(Target, DimCalendarLevel.Year);
    // Set custom name for criterion problem
    MetaTarget.UseCustomName := True;
    MetaTarget.Name := "New criterion function";
    // Save changes
    (Problem As IMetabaseObject).Save;
End Sub UserProc;

After executing the example the internal model and criterion function are added to the modeling problem.