/*

  * Copyright (C) 1998-2001 Semiotek Inc.  All Rights Reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted under the terms of either of the following

  * Open Source licenses:

  *

  * The GNU General Public License, version 2, or any later version, as

  * published by the Free Software Foundation

  * (http://www.fsf.org/copyleft/gpl.html);

  *

  *  or

  *

  * The Semiotek Public License (http://webmacro.org/LICENSE.)

  *

  * This software is provided "as is", with NO WARRANTY, not even the

  * implied warranties of fitness to purpose, or merchantability. You

  * assume all risks and liabilities associated with its use.

  *

  * See www.webmacro.org for more information on the WebMacro project.

  */

 package org.webmacro.resource;

 /**

  * CacheReloadContext provides support for providers which support

  * cache invalidation on a per-element basis, for example if an underlying

  * resource has changed.  The reload context allows the cache manager to ask

  * the provider if the resource should be reloaded.

  * 

  * @since 0.96

  */

 public abstract class CacheReloadContext

 {

     /**

      * The CacheManager calls <code>shouldReload()</code> to ask the reference 

      * whether it has changed since we loaded it.  Subclasses should define an

      * implementation of this if it makes sense to.  Otherwise, the default

      * returns false, which means the item is replaced when it expires from

      * the cache.

      */

     public boolean shouldReload ()

     {

         return false;

     }

 }