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Java > Open Source Codes > org > joseki > util > cache > CachePolicy


1 /*
2  * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
3  * [See end of file]
4  */
5
6
7 /**
8  * @author Andy Seaborne
9  * @version $Id: CachePolicy.java,v 1.5 2004/04/30 14:13:13 andy_seaborne Exp $
10  */
11  
12 package org.joseki.util.cache;
13
14 public interface CachePolicy
15 {
16     /** Choose which object(s) to remove.
17      *
18      * @param count The number of objects to decide to go.
19      *
20      * @return Array of keys to remove
21      */
22     public Object JavaDoc[] expel(int count) ;
23     
24     /** Note access to an object */
25     public void update(Object JavaDoc key) ;
26     
27     /** Announce the insertion of a new object into the cache */
28     public void newItem(Object JavaDoc key, Object JavaDoc value) ;
29 }
30
31 /*
32  * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
33  * All rights reserved.
34  *
35  * Redistribution and use in source and binary forms, with or without
36  * modification, are permitted provided that the following conditions
37  * are met:
38  * 1. Redistributions of source code must retain the above copyright
39  * notice, this list of conditions and the following disclaimer.
40  * 2. Redistributions in binary form must reproduce the above copyright
41  * notice, this list of conditions and the following disclaimer in the
42  * documentation and/or other materials provided with the distribution.
43  * 3. The name of the author may not be used to endorse or promote products
44  * derived from this software without specific prior written permission.
45  *
46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56  */
57
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