/**
* Parses and returns a glob expression, which extends {@link #name(Cmd)} function with asterisks,
* question marks and commands.
*
* @param cmd referring command; if specified, the result must not be empty
* @return glob expression
* @throws QueryException query exception
*/
private String glob(final Cmd cmd) throws QueryException {
consumeWS();
final StringBuilder sb = new StringBuilder();
while (true) {
final char ch = parser.curr();
if (!Databases.validChar(ch) && ch != '*' && ch != '?' && ch != ',') {
return finish(eoc() || ws(ch) ? sb : null, cmd);
}
sb.append(parser.consume());
}
}
/**
* Parses and returns a name. A name may contain letters, numbers and any of the special
* characters <code>!#$%&'()+-=@[]^_`{}~</code>.
*
* @param cmd referring command; if specified, the result must not be empty
* @return name
* @throws QueryException query exception
*/
private String name(final Cmd cmd) throws QueryException {
consumeWS();
final StringBuilder sb = new StringBuilder();
while (Databases.validChar(parser.curr())) sb.append(parser.consume());
return finish(eoc() || ws(parser.curr()) ? sb : null, cmd);
}