Quintiq file version 2.0 
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#parent: #root 
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Method InitConstraintsForCampaignCalcDurationOfElementTypeStart ( 
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  CapacityPlanningSuboptimizer_CapacityPlanningAlgorithm program, 
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  const LibOpt_Scope scope 
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) const 
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{ 
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  TextBody: 
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  [* 
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    campaigndurationstart_constname := typeof( MPCalcDurationOfElementTypeStartConstraint ); 
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    scalefactor_DurationOfCampaignElementTypeStart_const := this.ScaleConstraintTerm( typeof( MPDurationOfCampaignElementTypeStartVariable ), campaigndurationstart_constname ); 
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    scalefactor_IsFirst_const := this.ScaleConstraintTerm( typeof( MPIsFirstCampaignElementTypeVariable ), campaigndurationstart_constname ); 
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    traverse( scope.GetUnitPeriodInOptimizerRunConst(), Elements.OptCampaignUnitSubPeriod, ocusp ) 
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    { 
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      traverse( ocusp, OptCampaignCombiElement.OptCampaignElementType, ocet ) 
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      { 
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        constr := program.CalcDurationOfElementTypeStartConstraints().New( ocet, ocusp ); 
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        // Adding duration campaign element type start variable to constraint 
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        vardurationstart := program.DurationOfCampaignElementTypeStartVariables().Get( ocet, ocusp ); 
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        constr.NewTerm( 1.0 * scalefactor_DurationOfCampaignElementTypeStart_const, vardurationstart );  
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        // subtracting BigM which is the min between campaign max duration and the period duration 
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        bigm := minvalue( ifexpr( ocet.HasMaxDuration(), ocet.MaxDuration(), Duration::MaxDuration() ), ocusp.UnitPeriod().Duration() ).HoursAsReal(); 
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        isfirst := program.IsFirstCampaignElementTypeVariables().Get( ocet, ocusp ); 
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        constr.NewTerm( -bigm * scalefactor_IsFirst_const, isfirst ); 
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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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