public void enable(List<String> usernames, LocalizedOperationResult result) {
synchronized (enableUserMutex) {
Set<String> potentialEnabledUsers = new HashSet<String>(toUserNames(userDao.enabledUsers()));
potentialEnabledUsers.addAll(usernames);
userDao.enableUsers(usernames);
}
}
public Collection<User> allUsers() {
Set<User> result = new HashSet<User>();
result.addAll(userDao.allUsers());
return result;
}