| Quintiq file version 2.0 | 
| #parent: #root | 
| DeclarativeReferenceRelation CalcParentPeriodSpecification_MP | 
| { | 
|   #keys: '1[110702.1.442080424]' | 
|   Expression: | 
|   [* | 
|     // soh yee Sep-15-2015 (created) | 
|      | 
|     spec := null( PeriodSpecification_MP ); | 
|      | 
|     // If the period is system created, it must be the base period, and it must have at least 2 parents. | 
|     if( not this.IsSystemCreated() ) | 
|     { | 
|       spec := minselect( this, MacroPlan.PeriodSpecification_MP, periodspec, | 
|                          periodspec.TimeUnitLevel() > this.TimeUnitLevel() | 
|                          and this.Start() >= periodspec.PeriodAlignment() | 
|                          and this.End() <= periodspec.End(), | 
|                          periodspec.TimeUnitLevel() ); | 
|     } | 
|      | 
|     return spec; | 
|   *] | 
|   Relation: ParentPeriodSpecification_MP | 
| } |