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Java > Open Source Codes > com > sun > ejb > containers > util > cache > FIFOSessionCache


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23
24 package com.sun.ejb.containers.util.cache;
25
26 import com.sun.ejb.spi.container.SFSBContainerCallback;
27
28 public class FIFOSessionCache
29     extends LruSessionCache
30 {
31
32     public FIFOSessionCache(String JavaDoc cacheName,
33                             SFSBContainerCallback container,
34                             int cacheIdleTime, int removalTime) {
35         super("FIFO-" + cacheName, container, cacheIdleTime, removalTime);
36     }
37
38     protected void itemAccessed(CacheItem item) {
39         LruCacheItem lc = (LruCacheItem) item;
40         synchronized (this) {
41             if (lc.isTrimmed) {
42                 lc.isTrimmed = false;
43                 CacheItem overflow = super.itemAdded(item);
44                 if (overflow != null) {
45                     trimItem(overflow);
46                 }
47             }
48         }
49     }
50     
51     protected void itemRefreshed(CacheItem item, int oldSize) {
52     }
53     
54     public void trimTimedoutItems(int maxCount) {
55         trimUnSortedTimedoutItems(maxCount);
56     }
57 }
58
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