1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.statemachine.transition;
21
22 import org.apache.mina.statemachine.State;
23 import org.apache.mina.statemachine.event.Event;
24
25 /**
26 * {@link Transition} implementation which does nothing but change the state.
27 *
28 * @author The Apache MINA Project (dev@mina.apache.org)
29 */
30 public class NoopTransition extends AbstractTransition {
31
32 /**
33 * Creates a new instance which will loopback to the same {@link State}
34 * for the specified {@link Event} id.
35 *
36 * @param eventId the {@link Event} id.
37 */
38 public NoopTransition(Object eventId) {
39 super(eventId);
40 }
41
42 /**
43 * Creates a new instance with the specified {@link State} as next state
44 * and for the specified {@link Event} id.
45 *
46 * @param eventId the {@link Event} id.
47 * @param nextState the next {@link State}.
48 */
49 public NoopTransition(Object eventId, State nextState) {
50 super(eventId, nextState);
51 }
52
53 protected boolean doExecute(Event event) {
54 return true;
55 }
56
57 }