RULE approvals_references_approval_history

(* SCHEMA ship_structures_schema; *)

  RULE approvals_references_approval_history FOR (object_role, 
             applied_group_assignment, group);

    LOCAL
      violate : LOGICAL := FALSE;
      t1_set  : SET OF group := [];
      a_set   : SET OF applied_group_assignment := [];
    END_LOCAL;
    t1_set := QUERY ( a <* group | VALUE_IN(which_class(a),
        'approval history') );
    REPEAT i := 1 TO HIINDEX(t1_set) BY 1 WHILE NOT violate;
      a_set := QUERY ( b <* applied_group_assignment | (NOT ((b.
          assigned_group = t1_set[i]) AND (b.role.name = 'approvals'))) );
      violate := SIZEOF(a_set) > 0;
    END_REPEAT;

  WHERE
    wr1: (NOT violate);

  END_RULE; -- approvals_references_approval_history

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2012-03-27T17:17:01-04:00