// Tuple Operation
        //
        public Tuple createTuple(int len) {
            // System.Console.WriteLine("aaaaaaaaaa");
            Tuple ret = new Tuple(len);
            // System.Console.WriteLine("bbbbbbbbbb");

            return ret;
        }
 public Object getTupleElement(Tuple tup, int index)
 {
     return tup.getElement(index);
 }
 public void setTupleElement(Tuple tup, int index, Object ele)
 {
     tup.setElement(index, ele);
 }