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Java > Open Source Codes > org > xquark > extractor > progress > 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.progress.sql;
24
25 import java.util.List JavaDoc;
26
27 import org.xquark.extractor.common.Debug;
28 import org.xquark.extractor.sql.Context;
29 import org.xquark.extractor.sql.SqlExpression;
30
31 public class SfConcat extends org.xquark.extractor.sql.SfConcat {
32     private static final String JavaDoc RCSRevision = "$Revision: 1.4 $";
33     private static final String JavaDoc RCSName = "$Name: $";
34
35     public SfConcat() {
36         super();
37     }
38
39     public SfConcat(List JavaDoc arguments) {
40         super(arguments);
41     }
42
43     public String JavaDoc toSql(Context context) {
44         //Trace.enter(this, "toSql(Context context)");
45
46         StringBuffer JavaDoc retVal = new StringBuffer JavaDoc();
47         List JavaDoc args = getArguments();
48         Debug.assertTrue(1 < args.size(), "1<args.size()");
49
50         for (int i = 0; i < args.size(); i++) {
51             SqlExpression item = (SqlExpression) args.get(i);
52             retVal.append(item.toSql(context));
53             retVal.append(" + ");
54         }
55         retVal.delete(retVal.length() - 3, retVal.length() - 1);
56
57         //Trace.exit(this, "toSql(Context context)");
58 return retVal.toString();
59     }
60 }
61
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