In listing 3.7, we import the constraints from User into ApplicationUser. Unfortunately, the password constraint has a custom validator that expects a loginId property, which doesn't exist on ApplicationUser. This results in a MissingPropertyException when you attempt to save a new ApplicationUser instance with a non-empty password. We should warn about this in the text.
In listing 3.7, we import the constraints from
UserintoApplicationUser. Unfortunately, thepasswordconstraint has a custom validator that expects aloginIdproperty, which doesn't exist onApplicationUser. This results in aMissingPropertyExceptionwhen you attempt to save a newApplicationUserinstance with a non-empty password. We should warn about this in the text.