KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jboss > metadata > spi > retrieval > ValidTime


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2006, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.metadata.spi.retrieval;
23
24 import java.util.concurrent.atomic.AtomicLong JavaDoc;
25
26 /**
27  * ValidTime.
28  *
29  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
30  * @version $Revision: 45742 $
31  */
32 public class ValidTime
33 {
34    /** The serialVersionUID */
35    private static final long serialVersionUID = 1075815265759870744L;
36
37    /** The next valid time */
38    private static final AtomicLong JavaDoc next = new AtomicLong JavaDoc(Long.MIN_VALUE);
39    
40    /** This valid time */
41    private volatile long value;
42    
43    /**
44     * Create a new ValidTime.
45     */
46    public ValidTime()
47    {
48       value = next.get();
49    }
50    
51    /**
52     * Get the valid time
53     *
54     * @return the valid time
55     */
56    public long getValidTime()
57    {
58       return value;
59    }
60
61    /**
62     * Invalidate
63     */
64    public void invalidate()
65    {
66       value = next.incrementAndGet();
67    }
68 }
69
Popular Tags