java/javax/servlet/ServletRequestListener.java

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 javax.servlet;

import java.util.EventListener;

/**
 * A ServletRequestListener can be implemented by the developer
 * interested in being notified of requests coming in and out of
 * scope in a web component. A request is defined as coming into
 * scope when it is about to enter the first servlet or filter
 * in each web application, as going out of scope when it exits
 * the last servlet or the first filter in the chain.
 *
 * @since Servlet 2.4
 */
public interface ServletRequestListener extends EventListener {

    /**
     * The request is about to go out of scope of the web application.
     * @param sre Information about the request
     */
    public void requestDestroyed (ServletRequestEvent sre);

    /**
     * The request is about to come into scope of the web application.
     * @param sre Information about the request
     */
    public void requestInitialized (ServletRequestEvent sre);
}