FUNCTION acyclic_qualification_relationship

(* SCHEMA qualifications_schema; *)

  FUNCTION acyclic_qualification_relationship (relation : qualification_relationship; relatives : SET 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;

Referenced By

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2012-03-27T17:13:58-04:00