FUNCTION acyclic_product_definition_formation_relationship
(relation : product_definition_formation_relationship; relatives : SET [1:?] OF product_definition_formation; specific_relation : STRING) : BOOLEAN;
LOCAL x : SET OF product_definition_formation_relationship; END_LOCAL;
IF relation.relating_product_definition_formation IN relatives THEN RETURN (FALSE); END_IF; x := QUERY(pdf <* bag_to_set(USEDIN(relation.relating_product_definition_formation, 'PRODUCT_DEFINITION_SCHEMA.' + 'PRODUCT_DEFINITION_FORMATION_RELATIONSHIP.' + 'RELATED_PRODUCT_DEFINITION_FORMATION')) | specific_relation IN TYPEOF(pdf)); REPEAT i := 1 TO HIINDEX(x); IF NOT acyclic_product_definition_formation_relationship(x[i], relatives + relation.relating_product_definition_formation, specific_relation) THEN RETURN (FALSE); END_IF; END_REPEAT; RETURN (TRUE); END_FUNCTION; -- acyclic_product_definition_formation_relationship
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