Quintiq file version 2.0
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#parent: #root
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Method InitConstraintsForShelfLifeCumulativeDemand (
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CapacityPlanningSuboptimizer_CapacityPlanningAlgorithm program,
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const ProductInStockingPointInPeriodPlanning pispip,
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DateTime lastpispipstart,
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DateTime firstafteractualstart,
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const IncomingShelfLifeDay islday,
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const LibOpt_Scope scope
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) const
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{
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Description: 'Initialize the constraints that are related to shelf life'
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TextBody:
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[*
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cdconstname := typeof( MPCumulativeDemandConstraint );
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scalefactor_mass := this.ScaleConstraintTerm( typeof( MPSalesDemandQtyVariable ), cdconstname );
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scalefactor_rhs_constr := this.ScaleConstraintRHS( cdconstname, 1.0 );
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previouspispip := pispip.PreviousPlanningPISPIP();
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constr := program.CumulativeDemandConstraints().New( pispip, islday );
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constr.RHSValue( 0.0 );
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constr.Sense( '=' );
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var := program.CumulativeDemandVariables().Find( previouspispip, islday );
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isfirstpispip := isnull( var );
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if ( not isfirstpispip ) // once var = null then we are at the 1st period of extra pispip prior to opt horizon (for which we make sure we always have enough via method ShelfLifeExtendHistoricalPeriods
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{
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constr.NewTerm( 1.0 * scalefactor_mass,
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program.CumulativeDemandVariables().Get( previouspispip, islday ) );
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}
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// sales and dependent demand applicable for CP(pispip, *)
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pispipstoconsider := pispip.GetNextPISPIPWithinShelfLife( lastpispipstart ); // included pispip - still need to check for precise shelf life condition
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product := pispip.ProductInStockingPoint_MP().Product_MP();
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traverse( pispip, ProductInStockingPoint_MP.OutgoingShelfLifeDay, oslday )
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{
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traverse( pispipstoconsider,
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Elements,
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pispipnext,
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CapacityPlanningSuboptimizer::ShelfLifeFilterArrivedForDemand( pispip, pispipnext, islday )
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and CapacityPlanningSuboptimizer::GetIsUsableInTargetPeriod( product, pispip.Period_MP(), pispipnext.GetTargetPeriod( oslday ) )
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and ( isfirstpispip or not CapacityPlanningSuboptimizer::GetIsUsableInTargetPeriod( product, pispip.PreviousPlanningPISPIP().Period_MP(), pispipnext.GetTargetPeriod( oslday ) ) ) // only add what is new
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and ( pispipnext.Start() >= firstafteractualstart ) ) // exclude sales, dep. demand prior to actual if it exists )
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{
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constr.NewTerm( 1.0 * scalefactor_mass, program.DependentDemandInPISPIPShelfLifeVariables().Get( pispipnext, islday, oslday ) );
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if ( oslday.ShelfLifeDays() = 0 and not oslday.IsZeroShelfLifeDaysForTrips() ) // the dependent demand var does not include sales demand so add separately (considered as outgoing lead time 0
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{
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traverse( pispipnext.GetLeafSalesDemandInPeriod(),
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Elements,
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lsdip,
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not lsdip.IsPostponed() )
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{
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svar := program.SalesDemandQtyVariables().Find( lsdip );
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if ( not isnull( svar ) )
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{
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constr.NewTerm( 1.0 * scalefactor_mass, svar );
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}
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else
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{
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constr.RHSValue( constr.RHSValue() - scalefactor_rhs_constr * lsdip.FulfilledQuantity() );
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}
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}
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// Postponed demands which are postponed to this period
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previouspispip := pispipnext.PreviousPlanningPISPIP();
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maxnumberofpostponement := pispipnext.ProductInStockingPoint_MP().OptimizerMaxPostponementPeriod(); // set in init instance for performance
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for( i := 1;
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i <= maxnumberofpostponement // within the maximum number of postponement periods
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and not isnull( previouspispip ); // the previous pispip exists
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i++ )
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{
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traverse( previouspispip.astype( ProductInStockingPointInPeriodPlanningLeaf ), PlanningBaseSalesDemandInPeriodForOptimizationPostponable, sd )
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{
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delayedvar := sd.GetDelayedSalesDemandShelfLifeQtyVariable( program, pispipnext.Period_MP(), islday );
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if ( not isnull( delayedvar ) )
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{
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constr.NewTerm( 1.0 * scalefactor_mass, delayedvar );
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}
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}
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previouspispip := previouspispip.PreviousPlanningPISPIP();
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}
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}
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}
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}
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constr.NewTerm( -1.0 * scalefactor_mass,
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program.CumulativeDemandVariables().Get( pispip, islday ));
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*]
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InterfaceProperties { Accessibility: 'Module' }
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}
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