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Jakarta Enterprise Beans

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/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package jakarta.ejb;

/**
 * The TimedObject interface contains a callback method that is used to deliver timer expiration
 * notifications. It can be implemented by a stateless session bean class, a singleton session bean class, a
 * message-driven bean class, or an enterprise bean 2.x entity bean class.
 * 
 * If the bean implements the TimedObject interface, the Timeout annotation, if used, can only
 * be applied to the ejbTimeout method.
 *
 * @see Timeout
 * @since EJB 2.1
 */
public interface TimedObject {

    /**
     * Invoked by the enterprise bean container upon timer expiration.
     *
     * @param timer timer whose expiration caused this notification.
     */
    public void ejbTimeout(Timer timer);

}