/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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/*

 *

 *  (C) Copyright IBM Corp. 1999 All Rights Reserved.

 *  Copyright 1997 The Open Group Research Institute.  All rights reserved.

 */

package sun.security.krb5.internal.ccache;

import sun.security.krb5.*;

import sun.security.krb5.internal.*;

import java.io.IOException;

import java.io.File;

//Windows supports the "API: cache" type, which is a shared memory cache.  This is

//implemented by krbcc32.dll as part of the MIT Kerberos for Win32 distribution.

//MemoryCredentialsCache will provide future functions to access shared memeory cache on

//Windows platform. Native code implementation may be necessary.

/**

 * This class extends CredentialsCache. It is used for accessing data in shared memory

 * cache on Windows platforms.

 *

 * @author Yanni Zhang

 */

public abstract class MemoryCredentialsCache extends CredentialsCache {

    private static CredentialsCache getCCacheInstance(PrincipalName p) {

        return null;

    }

    private static CredentialsCache getCCacheInstance(PrincipalName p, File cacheFile) {

        return null;

    }

    public abstract boolean exists(String cache);

    public abstract void update(Credentials c);

    public abstract void save() throws IOException, KrbException;

    public abstract Credentials[] getCredsList();

    public abstract Credentials getCreds(PrincipalName sname) ;

    public abstract PrincipalName getPrimaryPrincipal();

}