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


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 SqlBinOpCompare extends SqlBinaryOperator
27 {
28
29     private static final String JavaDoc RCSRevision = "$Revision: 1.4 $";
30     private static final String JavaDoc RCSName = "$Name: $";
31
32     private int _operator;
33
34     /**
35     @param operator
36     @param leftOperand
37     @param rightOperand
38     @roseuid 3BD177D30241
39      */
40     public SqlBinOpCompare(int operator, SqlExpression leftOperand, SqlExpression rightOperand)
41     {
42         super ( leftOperand, rightOperand );
43         setOperator ( operator ) ;
44     }
45
46     /**
47     @param operator
48     @param leftOperator
49     @param rightOperator
50     @roseuid 3BD177D3020F
51      */
52     public SqlBinOpCompare()
53     {
54
55     }
56
57     /**
58     Access method for the _operator property.
59     @return the current value of the _operator property
60     @roseuid 3BD177D303DC
61      */
62     public int getOperator()
63     {
64         return _operator;
65     }
66
67     /**
68     Sets the value of the _operator property.
69     @param aOperator the new value of the _operator property
70     @roseuid 3BD177D4003A
71      */
72     public void setOperator(int aOperator)
73     {
74         _operator = aOperator;
75     }
76
77     /**
78     @return String
79     @roseuid 3BD177D400D0
80      */
81     public String JavaDoc toSql(Context context)
82     {
83         //Trace.enter(this,"toSql(Context context)");
84 StringBuffer JavaDoc retVal = new StringBuffer JavaDoc();
85
86         retVal.append("(");
87         retVal.append(getLeftOperand().toSql(context));
88         retVal.append(") ");
89
90         retVal.append(COMPOPSSTRINGS [_operator]);
91
92         retVal.append(" (");
93         retVal.append(getRightOperand().toSql(context));
94         retVal.append(")");
95
96         //Trace.exit(this,"toSql(Context context)", retVal);
97 return retVal.toString();
98     }
99 }
100
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