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


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 SqlRenameRelation extends SqlUnaryOperator
27 {
28     private static final String JavaDoc RCSRevision = "$Revision: 1.5 $";
29     private static final String JavaDoc RCSName = "$Name: $";
30
31     private String JavaDoc _name;
32
33     public SqlRenameRelation()
34     {
35     }
36
37     /**
38     @param relation
39     @param name
40     @roseuid 3BD182000164
41      */
42     public SqlRenameRelation(SqlExpression relation, String JavaDoc name)
43     {
44         super(relation);
45         setName(name);
46     }
47
48     public void setName (String JavaDoc name)
49     {
50 // Debug.assertTrue(null!=name,"null!=name");
51 _name = name;
52     }
53
54     public String JavaDoc getName ()
55     {
56         return _name;
57     }
58
59     public String JavaDoc toSql(Context context) {
60         return toSql(context,true);
61     }
62     
63     public String JavaDoc toSql(Context context, boolean putQuotes)
64     {
65         //Trace.enter(this,"toSql(Context context)");
66
67         StringBuffer JavaDoc retVal = new StringBuffer JavaDoc();
68
69         if (_operand instanceof Executable) {
70             retVal.append(" (");
71             retVal.append(_operand.toSql(context));
72             retVal.append(") ");
73         }
74         else
75             retVal.append(_operand.toSql(context));
76
77         if (null != _name) {
78             retVal.append(' ');
79             if (putQuotes) retVal.append('"');
80             retVal.append(_name);
81             if (putQuotes) retVal.append('"');
82         }
83
84         //Trace.exit(this,"toSql",retVal);
85 return retVal.toString();
86     }
87 }
88
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