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


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 org.xquark.extractor.common.Debug;
26
27 public class SqlRenameItem extends SqlUnaryOperator
28 {
29     private static final String JavaDoc RCSRevision = "$Revision: 1.5 $";
30     private static final String JavaDoc RCSName = "$Name: $";
31
32     private String JavaDoc _name;
33
34     public SqlRenameItem() {}
35
36     /**
37     @param item
38     @param name
39     @roseuid 3BD1818102DE
40      */
41     public SqlRenameItem(SqlExpression item, String JavaDoc name)
42     {
43         super(item);
44         setName(name);
45     }
46
47
48     public String JavaDoc getName()
49     {
50         return _name;
51     }
52
53     public void setName(String JavaDoc aName)
54     {
55         Debug.assertTrue( null!=aName, "null!=name");
56         _name = aName;
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         if (context.selectList) {
69             if (_operand instanceof SqlSelect) {
70                 retVal.append("( ");
71                 retVal.append(_operand.toSql(context));
72                 retVal.append(" )");
73             }
74             else {
75                 retVal.append(_operand.toSql(context));
76             }
77             retVal.append(" AS ");
78             if (putQuotes) retVal.append('"');
79             retVal.append(_name);
80             if (putQuotes) retVal.append('"');
81         }
82         else {
83             if (putQuotes) retVal.append('"');
84             retVal.append(_name);
85             if (putQuotes) retVal.append('"');
86         }
87
88         //Trace.exit(this,"toSql(Context context)");
89 return retVal.toString();
90     }
91 }
92
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