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Java > Open Source Codes > org > jboss > ejb > txtimer > BigIntegerTimerIdGenerator


1 /*
2  * JBoss, Home of Professional Open Source
3  * Copyright 2005, 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.ejb.txtimer;
23
24 // $Id: BigIntegerTimerIdGenerator.java 37858 2005-11-05 17:06:17Z dimitris $
25
26 import java.math.BigInteger JavaDoc;
27
28 /**
29  * A timerId generator that uses a BigInteger count.
30  *
31  * @author Thomas.Diesler@jboss.org
32  * @version $Revision: 37858 $
33  * @since 10-Sep-2004
34  */
35 public class BigIntegerTimerIdGenerator implements TimerIdGenerator
36 {
37    // The next timer identity
38 private BigInteger JavaDoc nextTimerId = BigInteger.valueOf(0);
39
40    /**
41     * Get the next timer id
42     */
43    public synchronized String JavaDoc nextTimerId()
44    {
45       nextTimerId = nextTimerId.add(BigInteger.valueOf(1));
46       return nextTimerId.toString();
47    }
48 }
49
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