/*
 * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/ContainerEvent.java,v 1.3 2001/07/22 20:13:30 pier Exp $
 * $Revision: 1.3 $
 * $Date: 2001/07/22 20:13:30 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */


package org.apache.catalina;


import java.util.EventObject;


/**
 * General event for notifying listeners of significant changes on a Container.
 *
 * @author Craig R. McClanahan
 * @version $Revision: 1.3 $ $Date: 2001/07/22 20:13:30 $
 */

public final class ContainerEvent
    extends EventObject {


    /**
     * The Container on which this event occurred.
     */
    private Container container = null;


    /**
     * The event data associated with this event.
     */
    private Object data = null;


    /**
     * The event type this instance represents.
     */
    private String type = null;


    /**
     * Construct a new ContainerEvent with the specified parameters.
     *
     * @param container Container on which this event occurred
     * @param type Event type
     * @param data Event data
     */
    public ContainerEvent(Container container, String type, Object data) {

        super(container);
        this.container = container;
        this.type = type;
        this.data = data;

    }


    /**
     * Return the event data of this event.
     */
    public Object getData() {

        return (this.data);

    }


    /**
     * Return the Container on which this event occurred.
     */
    public Container getContainer() {

        return (this.container);

    }


    /**
     * Return the event type of this event.
     */
    public String getType() {

        return (this.type);

    }


    /**
     * Return a string representation of this event.
     */
    public String toString() {

        return ("ContainerEvent['" + getContainer().getName() + "','" +
                getType() + "']");

    }


}
