String userId = twitterLinkage.getUserId();
User user = daos.getUserAccess().find(con, userId);
if (user == null) {
user = new User(userId, twitterLinkage.getScreenName(), twitterLinkage.getProfileImageURL(), TimeUtil.getCurrentDateTime(), null, false);
daos.getUserAccess().put(con, user);
user.freeze();
} else {
if (!verifyUserProfiles(user, twitterLinkage)) {
user = new User(user);
user.setScreenName(twitterLinkage.getScreenName());
user.setProfileImageURL(twitterLinkage.getProfileImageURL());