Initial Checkin

1 files changed, 87 insertions, 0 deletions

diff --git a/java/security/acl/Group.java b/java/security/acl/Group.java
new file mode 100644
index 000000000..07d145b45
--- /dev/null
+++ b/java/security/acl/Group.java
@@ -0,0 +1,87 @@
+/*************************************************************************
+/* Group.java -- Represents a group of Principals
+/*
+/* 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;
+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
+{
+
+/**
+  * 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
+  */
+public abstract 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
+  */
+public abstract 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
+  */
+public abstract boolean
+isMember();
+
+/*************************************************************************/
+
+/**
+  * 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
+  */
+public abstract Enumeration
+members();
+
+} // interface Group
+