public synchronized DFA get() {
if (dfa123 == this) {
Set<String> nameSet = new HashSet<String>();
for (Map.Entry<Long, List<CityToken>> e : DataCache.pIdMap.entrySet()) {
for (CityToken ct : e.getValue()) {
if (ct.getLevel() <= 3) {
nameSet.add(ct.getName());
} else {
break;
}
}
}
final DFA dfa = DFA.create(NodeCreater.create(nameSet));
dfa123 =
new DFASupplier() {
public DFA get() {
return dfa;
}
};
return dfa;
}
return dfa123.get();
}
public static DFA getDFA123() {
return dfa123.get();
}