How add message for authenticate method

26. May 2008, 16:27 CET | Link Tiago Sudeval

Hi, I use seam-gen in my project, i wish that when ocurrs error in my method authenticate, return a message with the error.

for example:

public boolean authenticate() {
 Boolean success = Boolean.TRUE;
 User user = getUser(identity.getUsername());
 if (user == null) {
    success = Boolean.FALSE;
    FacesMessage.instance.add("User not found!");
 }else if (!user.getPassword.equals(identity.getPassword())){
    success = Boolean.FALSE;
    FacesMessage.instance.add("Password Invalid!");
 }

 return success;

but when i add the message, the method authenticate is execute twice and in my view is show as below:

User not found
Login Failed
User not found
... my form .....................
. Login:                        .
.                               .
. Password:                     .
.................................
 

why is execute twice (authenticate) ? how i do to show only 'Login failed' and 'user not found' once ?

ps.: Login failed is the message default for login error.(message.properties)