org.springframework.webflow.engine.History 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;
/**
* View state history policies.
*
* @see ViewState
* @author Keith Donald
*/
public enum History {
/**
* The history of the view state should be preserved when the view state exits to support back-tracking.
*/
PRESERVE,
/**
* The history of the view state should be discarded when the view state exits to prevent back-tracking.
*/
DISCARD,
/**
* The history of the view state and all previous view state should be invalidated to completely restrict back
* tracking.
*/
INVALIDATE
}