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-/* Owner.java -- ACL owner
- Copyright (C) 1998 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 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;
-
-/**
- * This interface provides a mechanism for maintaining a list of owners
- * of an access control list (ACL). Since a <code>Principal</code> must
- * be an owner in order to modify the owner list, a mechanism must be
- * provided to specify the initial owner of the ACL. The proper way to do
- * this is for the implementing class to specify the initial owner in
- * the contructor for that class.
- *
- * @version 0.0
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public interface Owner
-{
- /**
- * This method adds an owner to the access control list (ACL). Only a
- * <code>Principal</code> who is already an owner can perform this operation.
- *
- * @param caller The <code>Principal</code> who is requesting that an owner be added
- * @param owner The <code>Principal</code> to add as a new owner
- *
- * @param <code>true</code> if the new owner was successfully added or <code>false</code> if the specified new owner is already an owner
- *
- * @exception NotOwnerException If the caller is not already an owner of this ACL
- */
- boolean addOwner(Principal caller, Principal owner)
- throws NotOwnerException;
-
- /**
- * This method delets an owner from the access control list (ACL). Only a
- * <code>Principal</code> who is an owner can perform this operation. An
- * owner can delete itself from the list. If there is only one
- * owner remaining on this list, any attempt to delete it will throw an
- * exception.
- *
- * @param caller The <code>Principal</code> who is requesting that an owner be deleted
- * @param owner The <code>Principal</code> to delete as an owner
- *
- * @param <code>true</code> if the new owner was successfully deleted or <code>false</code> if the specified owner is not currently an owner
- *
- * @exception NotOwnerException If the caller is not already an owner of this ACL
- * @exception LastOwnerException If completing the operation would delete the last ACL owner
- */
- boolean deleteOwner(Principal caller, Principal owner)
- throws NotOwnerException, LastOwnerException;
-
- /**
- * This method tests whether or not a given <code>Principal</code> is an
- * owner of this access control list (ACL).
- *
- * @return <code>true</code> if the <code>Principal</code> is an owner, <code>false</code> otherwise
- */
- boolean isOwner(Principal owner);
-}