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
 * @version $Rev$ $Date$
 */

public interface ServletRequestListener extends EventListener {

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

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

}