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


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 RrdDoubleArray extends RrdPrimitive {
31     private int length;
32
33     RrdDoubleArray(RrdUpdater updater, int length) throws IOException JavaDoc {
34         super(updater, RrdPrimitive.RRD_DOUBLE, length);
35         this.length = length;
36     }
37
38     void set(int index, double value) throws IOException JavaDoc {
39         set(index, value, 1);
40     }
41
42     void set(int index, double value, int count) throws IOException JavaDoc {
43         // rollovers not allowed!
44 assert index + count <= length: "Invalid robin index supplied: index=" + index +
45             ", count=" + count + ", length=" + length;
46         writeDouble(index, value, count);
47     }
48
49     double get(int index) throws IOException JavaDoc {
50         assert index < length: "Invalid index supplied: " + index + ", length=" + length;
51         return readDouble(index);
52     }
53
54     double[] get(int index, int count) throws IOException JavaDoc {
55         assert index + count <= length: "Invalid index/count supplied: " + index +
56             "/" + count + " (length=" + length + ")";
57         return readDouble(index, count);
58     }
59
60 }
61
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