/**
* This method completely parses a string 'rules' containing sorting rules.
*
* @param rules String containing the rules to be parsed.
* @return A set of sorting instructions stored in a Vector.
* @throws ParseException if something turned wrong during the parsing. To get details decode the
* message.
*/
private ArrayList parseString(String rules) throws ParseException {
ArrayList v = new ArrayList();
// result of the first subParseString is not absolute (may be -1 or a
// positive integer). But we do not care.
subParseString(false, v, 0, rules);
return v;
}
