/** Contains such quantum invariant? */
public boolean contains(QI qi) {
long hashCode = qi.getHashCode();
ArrayList<QI> list = _map.get(hashCode);
if (list == null) {
return false;
} else {
for (QI aux : list) {
if (aux.isEqual(qi)) return true;
}
return false;
}
}
/** Returns null if the qi is new to the repository otherwise returns the already stored QI */
public synchronized QI add(QI qi) {
long hashCode = qi.getHashCode();
ArrayList<QI> list = _map.get(hashCode);
if (list == null) {
list = new ArrayList<QI>();
_map.put(hashCode, list);
list.add(qi);
return null;
} else {
for (QI aux : list) {
if (aux.isEqual(qi)) return aux;
}
list.add(qi);
return null;
}
}
