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


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 java.sql.Date JavaDoc;
26 import java.util.Map JavaDoc;
27
28 import org.xquark.extractor.common.SqlWrapperException;
29 import org.xquark.extractor.sql.SqlExpression;
30
31 public final class LitDate extends Literal
32 {
33
34     private static final String JavaDoc RCSRevision = "$Revision: 1.5 $";
35     private static final String JavaDoc RCSName = "$Name: $";
36
37     private Date JavaDoc _value;
38
39     public LitDate(java.sql.Date JavaDoc value) { setValue ( value );}
40
41     synchronized Object JavaDoc clone(Map JavaDoc clonedExprs) throws CloneNotSupportedException JavaDoc
42     {
43         LitDate retVal = (LitDate)super.clone(clonedExprs);
44         retVal.setValue((getValue() == null) ? null : (java.sql.Date JavaDoc)getValue().clone());
45         clonedExprs.put(this, retVal);
46         return retVal;
47     }
48
49     public Date JavaDoc getValue () { return _value;}
50
51     public void setValue (java.sql.Date JavaDoc value) { _value = value;}
52
53     public String JavaDoc pprint ( ) { return "'" + _value.toString() + "'" ;}
54
55     public SqlExpression accept (GenSqlVisitor visitor) throws SqlWrapperException
56     {
57         return visitor.visit(this);
58     }
59
60     public void accept (AlgebraVisitor visitor) throws SqlWrapperException
61     {
62         visitor.visit(this);
63     }
64     
65     public boolean deepEquals(Object JavaDoc o)
66     {
67         if (o instanceof LitDate)
68         {
69             LitDate cast = (LitDate)o;
70             return _value.equals(cast.getValue());
71         }
72         return false;
73     }
74 }
75
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