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Java > Open Source Codes > org > springframework > webflow > engine > TargetStateResolver


1 /*
2  * Copyright 2002-2006 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16 package org.springframework.webflow.engine;
17
18 import org.springframework.webflow.execution.RequestContext;
19
20 /**
21  * A strategy for calculating the target state of a transition. This facilitates
22  * dynamic transition target state resolution that takes into account runtime
23  * contextual information.
24  *
25  * @author Keith Donald
26  */

27 public interface TargetStateResolver {
28
29     /**
30      * Resolve the target state of the transition from the source state in the
31      * current request context. Should never return null.
32      * @param transition the transition
33      * @param sourceState the source state of the transition, could be null
34      * @param context the current request context
35      * @return the transition's target state
36      */

37     public State resolveTargetState(Transition transition, State sourceState, RequestContext context);
38 }
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