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Java > Open Source Codes > org > xquark > extractor > algebra > BinOpDifference


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.algebra;
24
25 import org.xquark.extractor.common.SqlWrapperException;
26 import org.xquark.extractor.sql.SqlExpression;
27
28 public final class BinOpDifference extends BinaryAlgebra
29 {
30
31     private static final String JavaDoc RCSRevision = "$Revision: 1.3 $";
32     private static final String JavaDoc RCSName = "$Name: $";
33
34     /**
35     @param leftOperand
36     @param rightOperand
37     @roseuid 3B2787B200F3
38      */
39     public BinOpDifference(Expression leftOperand, Expression rightOperand)
40     {
41         super ( leftOperand, rightOperand );
42     }
43
44     public SqlExpression accept (GenSqlVisitor visitor) throws SqlWrapperException
45     {
46         return visitor.visit(this);
47     }
48
49     public void accept (AlgebraVisitor visitor) throws SqlWrapperException
50     {
51         visitor.visit(this);
52     }
53 }
54
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