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Java > Open Source Codes > org > xquark > extractor > sql > SfStringLength


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */

22
23 package org.xquark.extractor.sql;
24
25
26 public class SfStringLength extends SqlFunction {
27
28     private static final String JavaDoc RCSRevision = "$Revision: 1.4 $";
29     private static final String JavaDoc RCSName = "$Name: $";
30
31
32     public SfStringLength()
33     {
34         super("SfStringLength");
35     }
36
37     public SfStringLength(SqlExpression arg0)
38     {
39         super("SfStringLength");
40         setArgument(0,arg0);
41     }
42
43     public String JavaDoc toSql (Context context)
44     {
45         //Trace.enter(this,"toSql(Context context)");
46

47         StringBuffer JavaDoc retVal = new StringBuffer JavaDoc();
48         retVal.append("LENGTH(");
49         retVal.append(getArgument(0).toSql(context));
50         retVal.append(")");
51
52         //Trace.exit(this,"toSql(Context context)");
53
return retVal.toString();
54     }
55 }
56
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