/// <summary>
/// Checks if the skos:narrower/skos:narrowerTransitive/skos:narrowMatch relation can be added to the given aConcept with the given bConcept
/// </summary>
internal static Boolean CheckNarrowerRelation(RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
var canAddNarrowerRel = false;
//Avoid clash with hierarchical relations
canAddNarrowerRel = !conceptScheme.CheckHasBroaderConcept(aConcept, bConcept);
//Avoid clash with associative relations
if (canAddNarrowerRel)
{
canAddNarrowerRel = !conceptScheme.CheckHasRelatedConcept(aConcept, bConcept);
}
//Avoid clash with mapping relations
if (canAddNarrowerRel)
{
canAddNarrowerRel = (!conceptScheme.CheckHasBroadMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasCloseMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasExactMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasRelatedMatchConcept(aConcept, bConcept));
}
return(canAddNarrowerRel);
}