asmuts 02/05/09 12:10:43
Added: src/java/org/apache/jcs/engine/control/event
ElementEvent.java
Log:
Adding an intial idea of how to handle simple events.
Two models:
1. register handlers with the element and have the handler decide which events to
act on.
2. register handlers for only those events that it wants to act on in the first
place.
The second makes handling multiple events a bit cumbersome.
Revision Changes Path
1.1
jakarta-turbine-jcs/src/java/org/apache/jcs/engine/control/event/ElementEvent.java
Index: ElementEvent.java
===================================================================
package org.apache.jcs.engine.control.event;
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 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", "Velocity", 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 [EMAIL PROTECTED]
*
* 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
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* 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
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* 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/>.
*/
import java.util.EventObject;
import org.apache.jcs.engine.control.event.behavior.IElementEventConstants;
import org.apache.jcs.engine.control.event.behavior.IElementEvent;
/**
* Element events will trigger the creation of Element Event objects. This is a
* wrapper around the cache element that indicates the event triggered.
*
*@author asmuts
*@created May 9, 2002
*/
public class ElementEvent
extends EventObject
implements IElementEventConstants, IElementEvent
{
private int elementEvent = this.ELEMENT_EVENT_EXCEEDED_MAXLIFE_BACKGROUND;
/**
* Constructor for the ElementEvent object
*
*@param source The Cache Element (should restrict?)
*@param elementEvent The event id defined in the constants class.
*/
public ElementEvent( Object source, int elementEvent )
{
super( source );
this.elementEvent = elementEvent;
}
/**
* Gets the elementEvent attribute of the ElementEvent object
*
*@return The elementEvent value. The List of values is defined in
* IElementEventConstants.
*/
public int getElementEvent()
{
return elementEvent;
}
}
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