org.springframework.web.context.request.DestructionCallbackBindingListener Maven / Gradle / Ivy
/*
* Copyright 2002-2015 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.web.context.request;
import java.io.Serializable;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
/**
* Adapter that implements the Servlet HttpSessionBindingListener interface,
* wrapping a session destruction callback.
*
* @author Juergen Hoeller
* @since 3.0
* @see RequestAttributes#registerDestructionCallback
* @see ServletRequestAttributes#registerSessionDestructionCallback
*/
@SuppressWarnings("serial")
public class DestructionCallbackBindingListener implements HttpSessionBindingListener, Serializable {
private final Runnable destructionCallback;
/**
* Create a new DestructionCallbackBindingListener for the given callback.
* @param destructionCallback the Runnable to execute when this listener
* object gets unbound from the session
*/
public DestructionCallbackBindingListener(Runnable destructionCallback) {
this.destructionCallback = destructionCallback;
}
@Override
public void valueBound(HttpSessionBindingEvent event) {
}
@Override
public void valueUnbound(HttpSessionBindingEvent event) {
this.destructionCallback.run();
}
}