Esempio n. 1
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 /**
  * Checks if the specified item is a QName. Returns the item or throws an exception.
  *
  * @param it item
  * @param empty allow empty result
  * @return QNm item
  * @throws QueryException query exception
  */
 protected final QNm toQNm(final Item it, final boolean empty) throws QueryException {
   if (empty && it == null) return null;
   final Type ip = checkNoEmpty(it, AtomType.QNM).type;
   if (ip == AtomType.QNM) return (QNm) it;
   if (ip.isUntyped()) throw NSSENS_X_X.get(info, ip, AtomType.QNM);
   throw castError(it, AtomType.QNM, info);
 }
Esempio n. 2
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 /**
  * Checks if the specified item is a boolean. Returns the boolean or throws an exception.
  *
  * @param it item be checked
  * @return boolean
  * @throws QueryException query exception
  */
 protected final boolean toBoolean(final Item it) throws QueryException {
   final Type ip = checkNoEmpty(it, AtomType.BLN).type;
   if (ip == AtomType.BLN) return it.bool(info);
   if (ip.isUntyped()) return Bln.parse(it.string(info), info);
   throw castError(it, AtomType.BLN, info);
 }
Esempio n. 3
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 /**
  * Checks if the specified item is a number. Returns a token representation or throws an
  * exception.
  *
  * @param it item to be checked
  * @return number
  * @throws QueryException query exception
  */
 protected final long toLong(final Item it) throws QueryException {
   final Type ip = checkNoEmpty(it, AtomType.ITR).type;
   if (ip.instanceOf(AtomType.ITR) || ip.isUntyped()) return it.itr(info);
   throw castError(it, AtomType.ITR, info);
 }
Esempio n. 4
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 /**
  * Checks if the specified non-empty item is a string. Returns its value as token or throws an
  * exception.
  *
  * @param it item to be checked
  * @return token
  * @throws QueryException query exception
  */
 protected final byte[] toToken(final Item it) throws QueryException {
   final Type ip = it.type;
   if (ip.isStringOrUntyped()) return it.string(info);
   throw it instanceof FItem ? FIATOM_X.get(info, it.type) : castError(it, AtomType.STR, info);
 }