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Java > Open Source Codes > org > objectweb > perseus > cache > api > CacheEventListener


1 /**
2  * Copyright (C) 2001-2002
3  * - France Telecom R&D
4  * - Laboratoire Logiciels, Systemes, Reseaux - UMR 5526, CNRS-INPG-UJF
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  * Release: 1.0
21  *
22  * Authors:
23  *
24  */
25
26 package org.objectweb.perseus.cache.api;
27
28 /**
29  * This interface is to be implemented at the applicative level, to
30  * ensure an appropriate management of objects held in cache.
31  * For instances, the event listener can implement a
32  * callback to deal with housekeeping of complex objects (e.g. closing
33  * OS resources allocated to the corresponding object), after it is
34  * notified of their corresponding eviction.
35  *
36  * @author Luciano Garcia-Banuelos (Luciano.Garcia@imag.fr)
37  * @version 0.0.0
38  */
39 public interface CacheEventListener {
40     /**
41      * An entry has been added in the cache.
42      * @param event describes the added entry
43      */
44     void entryBound(CacheEvent event);
45
46     /**
47      * An entry has been evicted from the cache.
48      * @param event describes the evicted entry
49      */
50     void entryUnbound(CacheEvent event);
51 }
52
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