org.springframework.webflow.engine.TargetStateResolver Maven / Gradle / Ivy
/*
* Copyright 2004-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.webflow.engine;
import org.springframework.webflow.execution.RequestContext;
/**
* A strategy for calculating the target state of a transition. This facilitates dynamic transition target state
* resolution that takes into account runtime contextual information.
*
* @author Keith Donald
*/
public interface TargetStateResolver {
/**
* Resolve the target state of the transition from the source state in the current request context. Should never
* return null.
* @param transition the transition
* @param sourceState the source state of the transition, could be null
* @param context the current request context
* @return the transition's target state - may be null if no state change should occur
*/
public State resolveTargetState(Transition transition, State sourceState, RequestContext context);
}