public void login() {
try {
// Do your "SELECT * FROM User WHERE username AND password" thing.
User user = userDAO.find(username, password);
if (user != null) {
// User found. Put the User in the UserSession.
userSession.setUser(user);
// Do your "UPDATE UserSession SET values WHERE CookieID" thing.
try {
userSessionDAO.save(userSession);
// Do your succes handling thing.
setSuccesMessage("You are logged in successfully!");
} catch (DAOException e) {
// Do your exception handling thing.
setErrorMessage("Updating UserSession failed.", e);
}
} else {
// Do your error handling thing.
setErrorMessage("Unknown username and/or invalid password.");
}
} catch (DAOException e) {
// Do your exception handling thing.
setErrorMessage("Loading User failed.", e);
}
}
public void logout() {
// Just null out the user.
userSession.setUser(null);
try {
// Do your "UPDATE UserSession SET values WHERE CookieID" thing.
userSessionDAO.save(userSession);
// Do your succes handling thing.
setSuccesMessage("You are logged out successfully!");
} catch (DAOException e) {
// Do your exception handling thing.
setErrorMessage("Updating UserSession failed.", e);
}
}