FUNCTION acyclic_qualification_relationship
(relation : qualification_relationship, relatives : SET [0:?] OF qualification, specific_relation : STRING) : BOOLEAN;
LOCAL x : SET OF qualification_relationship; END_LOCAL;
IF relation.relating_qualification IN relatives THEN RETURN (FALSE); END_IF; x := QUERY(qual <* bag_to_set(USEDIN(relation.relating_qualification, 'QUALIFICATIONS_SCHEMA.' + 'QUALIFICATION_RELATIONSHIP.' + 'RELATED_QUALIFICATION')) | specific_relation IN TYPEOF(qual)); REPEAT i := 1 TO HIINDEX(x); IF NOT acyclic_qualification_relationship(x[i], relatives + relation.relating_qualification, specific_relation) THEN RETURN (FALSE); END_IF; END_REPEAT; RETURN (TRUE); END_FUNCTION; -- acyclic_qualification_relationship
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