/*
 * 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 jakarta.servlet;

This is the event class for notifications of changes to the attributes of the
servlet request in an application.
See Also:
ServletRequestAttributeListener
Since:
Servlet 2.4/**
 * This is the event class for notifications of changes to the attributes of the
 * servlet request in an application.
 *
 * @see ServletRequestAttributeListener
 * @since Servlet 2.4
 */
public class ServletRequestAttributeEvent extends ServletRequestEvent {
    private static final long serialVersionUID = 1L;

    private final String name;
    private final Object value;

    
Construct a ServletRequestAttributeEvent giving the servlet context of
this web application, the ServletRequest whose attributes are changing
and the name and value of the attribute.
Params:
sc – 
           the ServletContext that is sending the event.
request – 
           the ServletRequest that is sending the event.
name – 
           the name of the request attribute.
value – 
           the value of the request attribute./**
     * Construct a ServletRequestAttributeEvent giving the servlet context of
     * this web application, the ServletRequest whose attributes are changing
     * and the name and value of the attribute.
     *
     * @param sc
     *            the ServletContext that is sending the event.
     * @param request
     *            the ServletRequest that is sending the event.
     * @param name
     *            the name of the request attribute.
     * @param value
     *            the value of the request attribute.
     */
    public ServletRequestAttributeEvent(ServletContext sc,
            ServletRequest request, String name, Object value) {
        super(sc, request);
        this.name = name;
        this.value = value;
    }

    
Return the name of the attribute that changed on the ServletRequest.
Returns:
the name of the changed request attribute/**
     * Return the name of the attribute that changed on the ServletRequest.
     *
     * @return the name of the changed request attribute
     */
    public String getName() {
        return this.name;
    }

    
Returns the value of the attribute that has been added, removed or
replaced. If the attribute was added, this is the value of the attribute.
If the attribute was removed, this is the value of the removed attribute.
If the attribute was replaced, this is the old value of the attribute.
Returns:
the value of the changed request attribute/**
     * Returns the value of the attribute that has been added, removed or
     * replaced. If the attribute was added, this is the value of the attribute.
     * If the attribute was removed, this is the value of the removed attribute.
     * If the attribute was replaced, this is the old value of the attribute.
     *
     * @return the value of the changed request attribute
     */
    public Object getValue() {
        return this.value;
    }
}