/**
* 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);
}
/**
* Checks if the specified item is a string or binary item.
*
* @param it item to be checked
* @return byte array
* @throws QueryException query exception
*/
protected final byte[] toBytes(final Item it) throws QueryException {
if (checkNoEmpty(it).type.isStringOrUntyped()) return it.string(info);
if (it instanceof Bin) return ((Bin) it).binary(info);
throw STRBIN_X_X.get(info, it.type, it);
}
/**
* 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);
}