FUNCTION acyclic_product_definition_relationship

(* SCHEMA technical_data_packaging; *)

  FUNCTION acyclic_product_definition_relationship(
               relation: product_definition_relationship;
               relatives: SET [1:?] OF product_definition;
               specific_relation: STRING
      ): BOOLEAN;

    LOCAL
      x : SET OF product_definition_relationship;
    END_LOCAL;
    IF relation.relating_product_definition IN relatives THEN
      RETURN(FALSE);
    END_IF;
    x := QUERY ( pd <* bag_to_set(USEDIN(relation.
        relating_product_definition,'TECHNICAL_DATA_PACKAGING.' + 
        'PRODUCT_DEFINITION_RELATIONSHIP.' + 'RELATED_PRODUCT_DEFINITION'))
         | (specific_relation IN TYPEOF(pd)) );
    REPEAT i := 1 TO HIINDEX(x) BY 1;
      IF NOT acyclic_product_definition_relationship(x[i],relatives + 
          relation.relating_product_definition,specific_relation) THEN
        RETURN(FALSE);
      END_IF;
    END_REPEAT;
    RETURN(TRUE);

  END_FUNCTION; -- acyclic_product_definition_relationship

Referenced By

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2012-03-27T17:18:35-04:00