Quintiq file version 2.0
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#parent: #root
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Method InitConstraintsForShiftPatternTotalChanges (
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CapacityPlanningSuboptimizer_CapacityPlanningAlgorithm program,
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const LibOpt_Scope scope,
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const Unit unit
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) const
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{
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Description: 'Represents the number of times a shift pattern is changed on a unit.'
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TextBody:
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[*
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constname := typeof( MPTotalShiftPatternChangesConstraint );
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scalefactor_nrshiftchanges_const := this.ScaleConstraintTerm( typeof( MPNrShiftPatternChangesVariable ), constname );
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scalefactor_spisfirst_const := this.ScaleConstraintTerm( typeof( MPShiftPatternIsFirstVariable ), constname );
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// Constraint: total number of shift pattern changes
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totalspchangesconstr := program.TotalShiftPatternChangesConstraints().New( unit );
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totalspchangesconstr.Sense( "=" );
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totalspchangesconstr.RHSValue( 0.0 );
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totalspchangesconstr.NewTerm( 1.0 * scalefactor_nrshiftchanges_const, program.NrShiftPatternChangesVariables().Get( unit ) );
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// Traverse leaf units (of capacity type Time)
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traverse( unit.GetUnitForShiftOptimization(), Elements, childunit )
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{
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traverse( childunit, UnitShiftPatternAllowed.ShiftPattern, sp )
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{
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traverse( childunit, UnitPeriod.astype(UnitPeriodTime), up, up.IsInScopeForShiftOptimization( scope ) )
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{
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totalspchangesconstr.NewTerm( -1.0 * scalefactor_spisfirst_const, program.ShiftPatternIsFirstVariables().Get( sp, up ) );
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// Also include variables representing periods not in scope that directly follow unit periods in scope.
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nextup := guard( up.NextPlanningUnitPeriod().astype( UnitPeriodTime ), null( UnitPeriodTime ) );
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if( not isnull( nextup ) and not nextup.IsInScopeForShiftOptimization( scope ) )
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{
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totalspchangesconstr.NewTerm( -1.0 * scalefactor_spisfirst_const, program.ShiftPatternIsFirstVariables().Get( sp, nextup ) );
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}
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}
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}
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}
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*]
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InterfaceProperties { Accessibility: 'Module' }
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}
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