public static Object[] ordinalArray(TupleSet tuples,String field){
  return ordinalArray(tuples,field,DefaultLiteralComparator.getInstance());
}

public static Object [ ] ordinalArray ( TupleSet tuples , String field ) { return ordinalArray ( tuples , field , DefaultLiteralComparator . getInstance ( ) ) ; }
get a sorted array containing all column values for a given tuple iterator and field .
