KickJava   Java API By Example, From Geeks To Geeks.

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


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 import java.util.List JavaDoc;
26
27 import org.xquark.extractor.common.Debug;
28
29 public class SfConcat extends SqlFunction
30 {
31     private static final String JavaDoc RCSRevision = "$Revision: 1.4 $";
32     private static final String JavaDoc RCSName = "$Name: $";
33
34     /**
35     @roseuid 3BD14D1E02B2
36      */
37     public SfConcat()
38     {
39         super("SfConcat");
40     }
41
42     /**
43     @param arguments
44     @roseuid 3BD1465C017E
45      */
46     public SfConcat(List JavaDoc arguments)
47     {
48         super("SfConcat",arguments);
49     }
50
51     public String JavaDoc toSql (Context context)
52     {
53         //Trace.enter(this,"toSql(Context context)");
54
55         StringBuffer JavaDoc retVal = new StringBuffer JavaDoc();
56         List JavaDoc args = getArguments();
57         Debug.assertTrue( 1<args.size(),"1<args.size()");
58
59         for (int i = 0; i < args.size(); i++) {
60             SqlExpression item = (SqlExpression)args.get(i);
61             retVal.append(item.toSql(context));
62             retVal.append(" || ");
63         }
64         retVal.delete(retVal.length()-4,retVal.length()-1);
65
66         //Trace.exit(this,"toSql(Context context)");
67 return retVal.toString();
68     }
69 }
70
Popular Tags