001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.mina.statemachine.transition; 021 022import org.apache.mina.statemachine.State; 023import org.apache.mina.statemachine.event.Event; 024 025/** 026 * {@link Transition} implementation which does nothing but change the state. 027 * 028 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 029 */ 030public class NoopTransition extends AbstractTransition { 031 032 /** 033 * Creates a new instance which will loopback to the same {@link State} 034 * for the specified {@link Event} id. 035 * 036 * @param eventId the {@link Event} id. 037 */ 038 public NoopTransition(Object eventId) { 039 super(eventId); 040 } 041 042 /** 043 * Creates a new instance with the specified {@link State} as next state 044 * and for the specified {@link Event} id. 045 * 046 * @param eventId the {@link Event} id. 047 * @param nextState the next {@link State}. 048 */ 049 public NoopTransition(Object eventId, State nextState) { 050 super(eventId, nextState); 051 } 052 053 protected boolean doExecute(Event event) { 054 return true; 055 } 056 057}