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Java > Open Source Codes > org > apache > catalina > session > PersistentManager


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18
19 package org.apache.catalina.session;
20
21 /**
22  * Implementation of the <b>Manager</b> interface that makes use of
23  * a Store to swap active Sessions to disk. It can be configured to
24  * achieve several different goals:
25  *
26  * <li>Persist sessions across restarts of the Container</li>
27  * <li>Fault tolerance, keep sessions backed up on disk to allow
28  * recovery in the event of unplanned restarts.</li>
29  * <li>Limit the number of active sessions kept in memory by
30  * swapping less active sessions out to disk.</li>
31  *
32  * @version $Revision: 467222 $
33  * @author Kief Morris (kief@kief.com)
34  */
35
36 public final class PersistentManager extends PersistentManagerBase {
37
38
39     // ----------------------------------------------------- Instance Variables
40
41
42     /**
43      * The descriptive information about this implementation.
44      */
45     private static final String JavaDoc info = "PersistentManager/1.0";
46
47
48     /**
49      * The descriptive name of this Manager implementation (for logging).
50      */
51     protected static String JavaDoc name = "PersistentManager";
52
53
54     // ------------------------------------------------------------- Properties
55
56
57     /**
58      * Return descriptive information about this Manager implementation and
59      * the corresponding version number, in the format
60      * <code>&lt;description&gt;/&lt;version&gt;</code>.
61      */
62     public String JavaDoc getInfo() {
63
64         return (info);
65
66     }
67
68     /**
69      * Return the descriptive short name of this Manager implementation.
70      */
71     public String JavaDoc getName() {
72
73         return (name);
74
75     }
76  }
77
78
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