/** Gets the OJ class for a RelDataType */
    private OJClass getClass(RelDataType type) {
      // TODO: is this code any better?
      // OJUtil.typeToOJClass(
      //     rhsType,
      //     translator.getFarragoTypeFactory());

      FarragoTypeFactory factory = translator.getFarragoTypeFactory();
      return OJClass.forClass(factory.getClassForPrimitive(type));
    }