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


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 BinOpCompare extends BinaryAtomicOp
29 {
30
31     private static final String JavaDoc RCSRevision = "$Revision: 1.3 $";
32     private static final String JavaDoc RCSName = "$Name: $";
33
34     protected int _operator;
35
36     /**
37      * @param operator
38      * @param leftOperand
39      * @param rightOperand
40      * @roseuid 3AB86A410162
41      */
42
43     public BinOpCompare(int operator, Expression leftOperand, Expression rightOperand)
44     {
45         super (leftOperand, rightOperand) ;
46         _operator = operator ;
47     }
48     public int getOperator ()
49     {
50         return _operator;
51     }
52     public void setOperator (int oprtr)
53     {
54         _operator = oprtr;
55     }
56
57     public String JavaDoc pprint()
58     {
59         return getLeftOperand().pprint() + " " + Constants.COMPOPSSTRINGS[_operator] + " " + getRightOperand().pprint();
60     }
61
62     public SqlExpression accept (GenSqlVisitor visitor) throws SqlWrapperException
63     {
64         return visitor.visit(this);
65     }
66
67     public void accept (AlgebraVisitor visitor) throws SqlWrapperException
68     {
69         visitor.visit(this);
70     }
71 }
72
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