Initial Checkin

1 files changed, 88 insertions, 0 deletions

diff --git a/java/security/acl/Owner.java b/java/security/acl/Owner.java
new file mode 100644
index 000000000..25824e658
--- /dev/null
+++ b/java/security/acl/Owner.java
@@ -0,0 +1,88 @@
+/*************************************************************************
+/* Owner.java -- ACL owner
+/*
+/* Copyright (c) 1998 Free Software Foundation, Inc.
+/* Written by Aaron M. Renn (arenn@urbanophile.com)
+/*
+/* This library is free software; you can redistribute it and/or modify
+/* it under the terms of the GNU Library General Public License as published 
+/* by the Free Software Foundation, either version 2 of the License, or
+/* (at your option) any later verion.
+/*
+/* This library 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 Library General Public License for more details.
+/*
+/* You should have received a copy of the GNU Library General Public License
+/* along with this library; if not, write to the Free Software Foundation
+/* Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA
+/*************************************************************************/
+
+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
+  */
+public abstract 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
+  */
+public abstract 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
+  */
+public abstract boolean
+isOwner(Principal owner);
+
+} // interface Owner
+