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Java > Open Source Codes > smallsql > database > SQLToken


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  * SQLToken.java
29  * ---------------
30  * Author: Volker Berlin
31  *
32  */
33 package smallsql.database;
34
35 /**
36  * @author Volker Berlin
37  *
38  */
39 class SQLToken{
40     int value;
41     int offset; // start offset des tokens im SQL
42 int length; // Länge des Tokens
43 String JavaDoc name;
44
45     SQLToken (int value, int tokenStart, int tokenEnd){
46         this.value = value;
47         this.offset = tokenStart;
48         this.length = tokenEnd-tokenStart;
49     }
50
51     /**
52      * Constructor used for quoted strings
53      */
54     SQLToken (String JavaDoc name, int value, int tokenStart, int tokenEnd){
55         this.value = value;
56         this.offset = tokenStart;
57         this.length = tokenEnd-tokenStart;
58         this.name = name;
59     }
60
61     String JavaDoc getName(char[] sql){
62         if(name != null) return name;
63         return new String JavaDoc( sql, offset, length );
64     }
65 }
66
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