예제 #1
0
 /**
  * Checks if the specified, non-empty item is a double. Returns the double or throws an exception.
  *
  * @param it item to be checked
  * @return number
  * @throws QueryException query exception
  */
 private ANum toNumber(final Item it) throws QueryException {
   if (it.type.isUntyped()) return Dbl.get(it.dbl(info));
   if (it instanceof ANum) return (ANum) it;
   throw numberError(this, it);
 }
예제 #2
0
 @Override
 public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
   final Item it = exprs[0].atomItem(qc, info);
   return it == null ? null : Dbl.get(sqrt(toDouble(it)));
 }