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Java > Open Source Codes > org > objectweb > jac > aspects > authentication > Authenticator


1 /*
2   Copyright (C) 2001-2002 Laurent Martelli <laurent@aopsys.com>
3   
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU Lesser General Public License as
6   published by the Free Software Foundation; either version 2 of the
7   License, or (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12   GNU Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public License
15   along with this program; if not, write to the Free Software
16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17
18 package org.objectweb.jac.aspects.authentication;
19
20 /**
21  * The role of a class that implements this interface is to ensure
22  * that the <code>AuthenticationAC.USER</code> contextual attribute
23  * corresponds to an authenticated user (an existing user). */
24
25 public interface Authenticator {
26     /**
27      * Authenticates the current user.
28      * @return the username of the user.
29      */
30     String JavaDoc authenticate() throws AuthenticationFailedException;
31 }
32
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