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Java > Open Source Codes > org > jrobin > core > RrdDouble


1 /* ============================================================
2  * JRobin : Pure java implementation of RRDTool's functionality
3  * ============================================================
4  *
5  * Project Info: http://www.jrobin.org
6  * Project Lead: Sasa Markovic (saxon@jrobin.org);
7  *
8  * (C) Copyright 2003, by Sasa Markovic.
9  *
10  * Developers: Sasa Markovic (saxon@jrobin.org)
11  * Arne Vandamme (cobralord@jrobin.org)
12  *
13  * This library is free software; you can redistribute it and/or modify it under the terms
14  * of the GNU Lesser General Public License as published by the Free Software Foundation;
15  * either version 2.1 of the License, or (at your option) any later version.
16  *
17  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
18  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19  * See the GNU Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public License along with this
22  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
23  * Boston, MA 02111-1307, USA.
24  */
25
26 package org.jrobin.core;
27
28 import java.io.IOException JavaDoc;
29
30 class RrdDouble extends RrdPrimitive {
31     RrdDouble(RrdUpdater updater) throws IOException JavaDoc {
32         super(updater, RrdDouble.RRD_DOUBLE);
33     }
34
35     void set(double value) throws IOException JavaDoc {
36         if(cache.setDouble(value)) {
37             writeDouble(value);
38         }
39     }
40
41     double get() throws IOException JavaDoc {
42         if(cache.isEmpty()) {
43             cache.setDouble(readDouble());
44         }
45         return cache.getDouble();
46     }
47 }
48
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