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Java > Open Source Codes > smallsql > database > DataSources


1 /* =============================================================
2  * SmallSQL : a free Java DBMS library for the Java(tm) platform
3  * =============================================================
4  *
5  * (C) Copyright 2004-2006, by Volker Berlin.
6  *
7  * Project Info: http://www.smallsql.de/
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ---------------
28  * DataSources.java
29  * ---------------
30  * Author: Volker Berlin
31  *
32  */
33 package smallsql.database;
34
35 /**
36  * @author Volker Berlin
37  *
38  */
39 final class DataSources {
40     
41     private int size;
42     private DataSource[] data = new DataSource[4];
43     
44     final int size(){
45         return size;
46     }
47
48     final DataSource get(int idx){
49         if (idx >= size)
50             throw new IndexOutOfBoundsException JavaDoc("Index: "+idx+", Size: "+size);
51         return data[idx];
52     }
53     
54     final void add(DataSource table){
55         if(size >= data.length ){
56             DataSource[] dataNew = new DataSource[size << 1];
57             System.arraycopy(data, 0, dataNew, 0, size);
58             data = dataNew;
59         }
60         data[size++] = table;
61     }
62 }
63
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