/** INTERNAL: Build locate operator i.e. LOCATE("ob", t0.F_NAME) */
 public static ExpressionOperator createLocateOperator() {
   ExpressionOperator expOperator =
       ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Locate, "INSTR");
   int[] argumentIndices = new int[2];
   argumentIndices[0] = 0;
   argumentIndices[1] = 1;
   expOperator.setArgumentIndices(argumentIndices);
   expOperator.setIsBindingSupported(false);
   return expOperator;
 }
 private void addNonBindingOperator(ExpressionOperator operator) {
   operator.setIsBindingSupported(false);
   addOperator(operator);
 }