FUNCTION acyclic_stratum_technology_mapping_relationship
(relation : stratum_technology_mapping_relationship_armx, relatives : SET [1:?] OF stratum_technology_armx, specific_relation : STRING) : BOOLEAN;
LOCAL
x : SET OF Stratum_technology_mapping_relationship_armx := [];
END_LOCAL;
IF relation.source_stratum_technology IN relatives THEN
RETURN (FALSE);
END_IF;
x := QUERY(pd <* bag_to_set(USEDIN(relation.source_stratum_technology,
'FABRICATION_TECHNOLOGY_XIM.' +
'STRATUM_TECHNOLOGY_MAPPING_RELATIONSHIP_ARMX.' +
'TARGET_STRATUM_TECHNOLOGY')) | specific_relation IN TYPEOF(pd));
REPEAT i := 1 TO HIINDEX(x);
IF NOT acyclic_stratum_technology_mapping_relationship(x[i], relatives +
relation.source_stratum_technology, specific_relation) THEN
RETURN (FALSE);
END_IF;
END_REPEAT;
RETURN (TRUE); END_FUNCTION; -- acyclic_stratum_technology_mapping_relationship
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