FUNCTION get_directed_link

(* SCHEMA step_merged_ap_schema; *)

-- DIFF IN AP238 STEP-NC
-- IN AP238 STEP-NC/AP242
FUNCTION get_directed_link
      (nodes : LIST OF representation;
       undirected_link : LIST OF chained_representation_link ) : LIST OF representation_relationship;
   LOCAL
      directed_link : LIST OF representation_relationship := [];
   END_LOCAL;
      IF (SIZEOF(nodes) <> SIZEOF(undirected_link) + 1) OR (VALUE_UNIQUE(nodes) = FALSE) THEN
         RETURN (?);
      END_IF;
      REPEAT i := 1 TO SIZEOF(undirected_link);
         CASE FALSE OF
            'STEP_MERGED_AP_SCHEMA.REPRESENTATION_CONTEXT' IN TYPEOF(undirected_link[i]) :
                  BEGIN
                     IF (nodes[i]\representation.context_of_items :=: undirected_link[i]) AND (nodes[(i + 1)]\representation.context_of_items :=: undirected_link[i]) THEN
                        INSERT( directed_link, representation_relationship('', '', nodes[(i + 1)], nodes[i]), i - 1 );
                     ELSE
                        RETURN (?);
                     END_IF;
                  END;
            'STEP_MERGED_AP_SCHEMA.REPRESENTATION_RELATIONSHIP' IN TYPEOF(undirected_link[i]) :
                  BEGIN
                     IF (nodes[i] :=: undirected_link[i]\representation_relationship.rep_1) AND (nodes[(i + 1)] :=: undirected_link[i]\representation_relationship.rep_2) OR (nodes[i] :=: undirected_link[i]\representation_relationship.rep_2) AND (nodes[(i + 1)] :=: undirected_link[i]\representation_relationship.rep_1) THEN
                        INSERT( directed_link, representation_relationship('', '', nodes[(i + 1)], nodes[i]), i - 1 );
                     ELSE
                        RETURN (?);
                     END_IF;
                  END;
            'STEP_MERGED_AP_SCHEMA.MAPPED_ITEM' IN TYPEOF(undirected_link[i]) :
                  BEGIN
                     IF (nodes[i] IN using_representations(undirected_link[i])) AND (nodes[(i + 1)] :=: undirected_link[i]\mapped_item.mapping_source\representation_map.mapped_representation) THEN
                        INSERT( directed_link, representation_relationship('', '', nodes[(i + 1)], nodes[i]), i - 1 );
                     ELSE
                        RETURN (?);
                     END_IF;
                  END;
         OTHERWISE :
               RETURN (?);
         END_CASE;
      END_REPEAT;
      IF VALUE_UNIQUE(directed_link) = FALSE THEN
         RETURN (?);
      END_IF;
      RETURN (directed_link);
END_FUNCTION;

Referenced By

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2020-07-28T17:02:20-04:00