01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one
03: * or more contributor license agreements. See the NOTICE file
04: * distributed with this work for additional information
05: * regarding copyright ownership. The ASF licenses this file
06: * to you under the Apache License, Version 2.0 (the
07: * "License"); you may not use this file except in compliance
08: * with the License. You may obtain a copy of the License at
09: *
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.annotation;
21:
22: import java.lang.annotation.ElementType;
23: import java.lang.annotation.Retention;
24: import java.lang.annotation.RetentionPolicy;
25: import java.lang.annotation.Target;
26:
27: /**
28: * Annotation used to define the states in a state machine. Only applies to
29: * <code>static final String</code> fields. The value of the string will be used
30: * as state id.
31: *
32: * @author The Apache MINA Project (dev@mina.apache.org)
33: * @version $Rev: 586695 $, $Date: 2007-10-20 04:01:17 -0600 (Sat, 20 Oct 2007) $
34: */
35: @Retention(RetentionPolicy.RUNTIME)
36: @Target(ElementType.FIELD)
37: public @interface State {
38: public static final String ROOT = "__root__";
39:
40: /**
41: * Sets the id of the parent state. The default is no parent.
42: */
43: String value() default ROOT;
44: }
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