1 /***
2 * Copyright 2003-2010 Terracotta, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package net.sf.ehcache;
18
19 /***
20 * Default implementation of the element eviction data storage that just keeps
21 * all the data in instance fields in the heap.
22 *
23 * @author Geert Bevin
24 * @version $Id: DefaultElementEvictionData.java 1219 2009-09-25 05:10:31Z
25 * gbevin $
26 */
27 public class DefaultElementEvictionData implements ElementEvictionData {
28
29 /***
30 * The creation time.
31 */
32 private long creationTime;
33
34 /***
35 * The last access time.
36 */
37 private long lastAccessTime;
38
39 /***
40 * Default constructor initializing the field to their empty values
41 */
42 public DefaultElementEvictionData(long creationTime) {
43 this.creationTime = creationTime;
44 }
45
46 /***
47 * Constructor allowing custom values for the data fields.
48 *
49 * @param lastAccessTime
50 */
51 public DefaultElementEvictionData(long creationTime, long lastAccessTime) {
52 this.creationTime = creationTime;
53 this.lastAccessTime = lastAccessTime;
54 }
55
56 /***
57 * {@inheritDoc}
58 */
59 public void setCreationTime(long creationTime) {
60 this.creationTime = creationTime;
61 }
62
63 /***
64 * {@inheritDoc}
65 */
66 public long getCreationTime() {
67 return creationTime;
68 }
69
70 /***
71 * {@inheritDoc}
72 */
73 public long getLastAccessTime() {
74 return lastAccessTime;
75 }
76
77 /***
78 * {@inheritDoc}
79 */
80 public void updateLastAccessTime(long time, Element element) {
81 lastAccessTime = time;
82 }
83
84 /***
85 * {@inheritDoc}
86 */
87 public void resetLastAccessTime(Element element) {
88 lastAccessTime = System.currentTimeMillis();
89 }
90
91 /***
92 * {@inheritDoc}
93 */
94 @Override
95 public final ElementEvictionData clone() throws CloneNotSupportedException {
96 DefaultElementEvictionData result = (DefaultElementEvictionData)super.clone();
97 result.creationTime = this.creationTime;
98 result.lastAccessTime = this.lastAccessTime;
99 return result;
100 }
101
102 /***
103 * {@inheritDoc}
104 */
105 public boolean canParticipateInSerialization() {
106 return true;
107 }
108 }