org.springframework.webflow.NullViewSelector 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;
import java.io.ObjectStreamException;
import java.io.Serializable;
/**
* Makes a null view selection, indicating no response should be issued.
*
* @author Keith Donald
*/
public final class NullViewSelector implements ViewSelector, Serializable {
/**
* The shared singleton {@link NullViewSelector} instance.
*/
public static final ViewSelector INSTANCE = new NullViewSelector();
private NullViewSelector() {
}
public ViewSelection makeRefreshSelection(RequestContext context) {
return makeSelection(context);
}
public ViewSelection makeSelection(RequestContext context) {
return ViewSelection.NULL_VIEW;
}
// resolve the singleton instance
private Object readResolve() throws ObjectStreamException {
return INSTANCE;
}
}