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Java > Open Source Codes > org > jfox > pool > PoolableObject


1 /* JFox, the OpenSource J2EE Application Server
2  *
3  * Distributable under GNU LGPL license by gun.org
4  * more details please visit http://www.huihoo.org/jfox
5  */
6
7 package org.jfox.pool;
8
9 /**
10  * @author <a HREF="mailto:young_yy@hotmail.com">Young Yang</a>
11  */
12
13
14 public interface PoolableObject {
15
16     /**
17      * actvite the object before it be retrived
18      */
19     void activate() throws Exception JavaDoc;
20
21     /**
22      * passivate the object before it be restored, set the status to initialized
23      */
24     void passivate() throws Exception JavaDoc;
25
26     /**
27      * 表明该对象是否能返回到池中
28      * 注意，如果一个对象已在池中，该方法也应该返回 false，表明该对象不可被使用
29      */
30     boolean isAvailable();
31
32     /**
33      * get the time that the poolable object has sleeped in the pool
34      * <p/>
35      * pool can decide whether to remove it according the time
36      *
37      * @return
38      */
39     long getSleepTime();
40 }
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