| /* Group.java -- Represents a group of Principals |
| Copyright (C) 1998, 2001 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package java.security.acl; |
| |
| import java.security.Principal; |
| import java.util.Enumeration; |
| |
| /** |
| * This interface represents a group of <code>Principals</code>. Note that |
| * since this interface extends <code>Principal</code>, a <code>Group</code> |
| * can be used where ever a <code>Principal</code> is requested. This |
| * includes arguments to the methods in this interface. |
| * |
| * @version 0.0 |
| * |
| * @author Aaron M. Renn (arenn@urbanophile.com) |
| */ |
| public interface Group extends Principal |
| { |
| /** |
| * This method adds a new <code>Principal</code> to this group. |
| * |
| * @param user The new <code>Principal</code> to add |
| * |
| * @return <code>true</code> if the user was successfully added or <code>false</code> if the user is already a member |
| */ |
| boolean addMember(Principal user); |
| |
| /** |
| * This method deletes a member from the group. |
| * |
| * @param user The <code>Principal</code> to delete |
| * |
| * @return <code>true</code> if the user was successfully deleted or <code>false</code> if the user is not a member of the group |
| */ |
| boolean removeMember(Principal user); |
| |
| /** |
| * This method tests whether or not a given <code>Principal</code> is a |
| * member of this group. |
| * |
| * @param user The <code>Principal</code> to test for membership |
| * |
| * @return <code>true</code> if the user is member, <code>false</code> otherwise |
| */ |
| boolean isMember(Principal member); |
| |
| /** |
| * This method returns a list of all members of the group as an |
| * <code>Enumeration</code>. |
| * |
| * @return The list of all members of the group |
| */ |
| Enumeration members(); |
| } |