userFuncArity( input );
}
public void userFuncArity(DataBag input ) throws ExecException {
String funcSpec = ARITY.class.getName() + "()";
PORead read = new PORead(new OperatorKey("", r.nextLong()), input);
List<PhysicalOperator> inputs = new LinkedList<PhysicalOperator>();
inputs.add(read);
POUserFunc userFunc = new POUserFunc(new OperatorKey("", r.nextLong()),
-1, inputs, new FuncSpec(funcSpec));
Result res = new Result();