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EntryRefreshPolicy.java | - | - | - | - |
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1 | /* | |
2 | * Copyright (c) 2002-2003 by OpenSymphony | |
3 | * All rights reserved. | |
4 | */ | |
5 | package com.opensymphony.oscache.base; | |
6 | ||
7 | import java.io.Serializable; | |
8 | ||
9 | /** | |
10 | * Interface that allows custom code to be called when checking to see if a cache entry | |
11 | * has expired. This is useful when the rules that determine when content needs refreshing | |
12 | * are beyond the base funtionality offered by OSCache. | |
13 | * | |
14 | * @version $Revision: 254 $ | |
15 | * @author <a href="mailto:fbeauregard@pyxis-tech.com">Francois Beauregard</a> | |
16 | */ | |
17 | public interface EntryRefreshPolicy extends Serializable { | |
18 | /** | |
19 | * Indicates whether the supplied <code>CacheEntry</code> needs to be refreshed. | |
20 | * This will be called when retrieving an entry from the cache - if this method | |
21 | * returns <code>true</code> then a <code>NeedsRefreshException</code> will be | |
22 | * thrown. | |
23 | * | |
24 | * @param entry The cache entry that is being tested. | |
25 | * @return <code>true</code> if the content needs refreshing, <code>false</code> otherwise. | |
26 | * | |
27 | * @see NeedsRefreshException | |
28 | * @see CacheEntry | |
29 | */ | |
30 | public boolean needsRefresh(CacheEntry entry); | |
31 | } |
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