/*

 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.

 * 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

 * questions.

 */

package javax.security.auth;

/**

 * Objects such as credentials may optionally implement this interface

 * to provide the capability to destroy its contents.

 *

 * @see javax.security.auth.Subject

 */

public interface Destroyable {

    /**

     * Destroy this {@code Object}.

     *

     * <p> Sensitive information associated with this {@code Object}

     * is destroyed or cleared.  Subsequent calls to certain methods

     * on this {@code Object} will result in an

     * {@code IllegalStateException} being thrown.

     *

     * <p>

     * The default implementation throws {@code DestroyFailedException}.

     *

     * @exception DestroyFailedException if the destroy operation fails. <p>

     *

     * @exception SecurityException if the caller does not have permission

     *          to destroy this {@code Object}.

     */

    public default void destroy() throws DestroyFailedException {

        throw new DestroyFailedException();

    }

    /**

     * Determine if this {@code Object} has been destroyed.

     *

     * <p>

     * The default implementation returns false.

     *

     * @return true if this {@code Object} has been destroyed,

     *          false otherwise.

     */

    public default boolean isDestroyed() {

        return false;

    }

}