/*
 * Copyright (c) 1997-2018 Oracle and/or its affiliates and others.
 * All rights reserved.
 * Copyright 2004 The Apache Software Foundation
 *
 * 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 javax.servlet;

Event class for notifications about changes to the attributes of the ServletContext of a web application.
See Also:
ServletContextAttributeListener
Since:
Servlet 2.3/**
 * Event class for notifications about changes to the attributes of the ServletContext of a web application.
 *
 * @see ServletContextAttributeListener
 *
 * @since Servlet 2.3
 */
public class ServletContextAttributeEvent extends ServletContextEvent {

    private static final long serialVersionUID = -5804680734245618303L;

    private String name;
    private Object value;

    
Constructs a ServletContextAttributeEvent from the given ServletContext, attribute name, and attribute value.
Params:
source – the ServletContext whose attribute changed
name –   the name of the ServletContext attribute that changed
value –  the value of the ServletContext attribute that changed/**
     * Constructs a ServletContextAttributeEvent from the given ServletContext, attribute name, and attribute value.
     *
     * @param source the ServletContext whose attribute changed
     * @param name   the name of the ServletContext attribute that changed
     * @param value  the value of the ServletContext attribute that changed
     */
    public ServletContextAttributeEvent(ServletContext source, String name, Object value) {
        super(source);
        this.name = name;
        this.value = value;
    }

    
Gets the name of the ServletContext attribute that changed.
Returns:
the name of the ServletContext attribute that changed/**
     * Gets the name of the ServletContext attribute that changed.
     *
     * @return the name of the ServletContext attribute that changed
     */
    public String getName() {
        return this.name;
    }

    
Gets the value of the ServletContext attribute that changed.

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 ServletContext attribute that changed/**
     * Gets the value of the ServletContext attribute that changed.
     *
     * <p>
     * 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 ServletContext attribute that changed
     */
    public Object getValue() {
        return this.value;
    }
}