Seam. Log in using Email or Username

Question

I'm trying to provide the user with the capability of "loging in" using either her/his username or her/his email. The thing is that afaik, I can have only one @UserPrincipal into my User class. Any idea of how to achieve this? Thanks in advance!

Answer 1

Define the Emailadress as unique in the User table.

When the user enters an emailaddress, lookup the Username from the table and use it to authenticate.