| /* |
| * Copyright (c) 2002, 2003, 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 com.sun.corba.se.spi.orbutil.fsm; |
| |
| /** |
| * Description goes here |
| * |
| * @author Ken Cavanaugh |
| */ |
| public interface Action |
| { |
| /** Called by the state engine to perform an action |
| * before a state transition takes place. The FSM is |
| * passed so that the Action may set the next state in |
| * cases when that is required. FSM and Input together |
| * allow actions to be written that depend on the state and |
| * input, but this should generally be avoided, as the |
| * reason for a state machine in the first place is to cleanly |
| * separate the actions and control flow. Note that an |
| * action should complete in a timely manner. If the state machine |
| * is used for concurrency control with multiple threads, the |
| * action must not allow multiple threads to run simultaneously |
| * in the state machine, as the state could be corrupted. |
| * Any exception thrown by the Action for the transition |
| * will be propagated to doIt. |
| * @param FSM fsm is the state machine causing this action. |
| * @param Input in is the input that caused the transition. |
| */ |
| public void doIt( FSM fsm, Input in ) ; |
| } |
| |
| // end of Action.java |