final User user = userCache.get(id);
if (user!=null) {
final Slot<RealmUser> u = new Slot<RealmUser>();
final DBConnection connection = getConnection();
try {
connection.query(REALM_USER_BY_USER, new DBQueryHandler() {
public void prepare(PreparedStatement s)
throws SQLException
{
s.setInt(1,realm.getId());
s.setInt(2,user.getId());