How to use

JdbcBasedUserManager

in

sockslib.server.manager

@Override
public UserManager addUser(String username, String password) {
  create(new User(username, password));
  return this;
}

@Override
public User check(String username, String password) {
  User user = find(username);
  if (user != null) {
    String encryptPassword = generateEncryptPassword(user, password);
    if (user.getPassword().equals(encryptPassword)) {
      return user;
    } else {
      return null;
    }
  }
  return null;
}

private String generateEncryptPassword(final User user) {
 return generateEncryptPassword(user, null);
}

private String generateEncryptPassword(final User user) {
  return generateEncryptPassword(user, null);
}

@Override
public User check(String username, String password) {
 User user = find(username);
 if (user != null) {
  String encryptPassword = generateEncryptPassword(user, password);
  if (user.getPassword().equals(encryptPassword)) {
   return user;
  } else {
   return null;
  }
 }
 return null;
}

@Override
public void create(User user) {
  user.setPassword(generateEncryptPassword(user));
  Object[] args = {user.getUsername(), user.getPassword()};
  jdbcTemplate.execute(createUserSql, args);
}

@Override
public UserManager addUser(String username, String password) {
 create(new User(username, password));
 return this;
}

@Override
public void update(final User user) {
 if (user == null) {
  throw new IllegalArgumentException("User can't null");
 }
 if (Strings.isNullOrEmpty(user.getUsername())) {
  throw new IllegalArgumentException("Username of the user can't be null or empty");
 }
 User old = find(user.getUsername());
 String newEncryptPassword = generateEncryptPassword(user);
 if (!old.getPassword().equals(newEncryptPassword)) {
  user.setPassword(newEncryptPassword);
 }
 Object[] args = {user.getPassword(), user.getUsername()};
 jdbcTemplate.execute(updateUserSql, args);
}

@Override
public void create(User user) {
 user.setPassword(generateEncryptPassword(user));
 Object[] args = {user.getUsername(), user.getPassword()};
 jdbcTemplate.execute(createUserSql, args);
}

@Override
public void update(final User user) {
  if (user == null) {
    throw new IllegalArgumentException("User can't null");
  }
  if (Strings.isNullOrEmpty(user.getUsername())) {
    throw new IllegalArgumentException("Username of the user can't be null or empty");
  }
  User old = find(user.getUsername());
  String newEncryptPassword = generateEncryptPassword(user);
  if (!old.getPassword().equals(newEncryptPassword)) {
    user.setPassword(newEncryptPassword);
  }
  Object[] args = {user.getPassword(), user.getUsername()};
  jdbcTemplate.execute(updateUserSql, args);
}