protected void validateCredential(final String username, final SASCurrent credential) throws LoginException {
        if (credential.get_incoming_principal_name() == null ||
                credential.get_incoming_principal_name().length == 0) {
            throw new LoginException();
        }
    }
protected void validateCredential ( final String username , final SASCurrent credential ) throws LoginException { if ( credential . get_incoming_principal_name ( ) == null || credential . get_incoming_principal_name ( ) . length == 0 ) { throw new LoginException ( ) ; } }
Validates the credential. Unfortunately there is not much we can do here by default.
<p/>
This method can be overridden to provide some real validation logic

@param username   The username
@param credential The SASCurrent.