org.springframework.webflow.engine.support.NotTransitionCriteria Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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.support;
import java.io.Serializable;
import org.springframework.util.Assert;
import org.springframework.webflow.engine.TransitionCriteria;
import org.springframework.webflow.execution.RequestContext;
/**
* Transition criteria that negates the result of the evaluation of
* another criteria object.
*
* @author Keith Donald
*/
public class NotTransitionCriteria implements TransitionCriteria, Serializable {
/**
* The criteria to negate.
*/
private TransitionCriteria criteria;
/**
* Create a new transition criteria object that will negate
* the result of given criteria object.
* @param criteria the criteria to negate
*/
public NotTransitionCriteria(TransitionCriteria criteria) {
Assert.notNull(criteria, "The criteria object to negate is required");
this.criteria = criteria;
}
public boolean test(RequestContext context) {
return !criteria.test(context);
}
public String toString() {
return "[not(" + criteria + ")]";
}
}