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Java > Open Source Codes > org > xquark > extractor > xfunctions > XfDateTime


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.xfunctions;
24
25 import org.xquark.extractor.algebra.Expression;
26 import org.xquark.extractor.sql.SqlExpression;
27
28 /**
29 6.2.2 xf:dateTime
30 xf:dateTime(string $srcval) => dateTime
31 If the value of $srcval conforms to the lexical representation of a dateTime as defined in [XML
32 Schema Part 2: Datatypes], the constructor returns the dateTime corresponding to that
33 representation. Otherwise, the constructor returns the error value as defined in [XQuery 1.0 and
34 XPath 2.0 Data Model].
35
36 6.2.2.1 Examples
37 xf:dateTime("1999-05-31T05:00:00") returns a dateTime value corresponding to the 31st. of May, 1999
38 at 5:00 AM in an unspecified timezone.
39
40 xf:dateTime("1999-05-31T13:20:00-05:00") returns a dateTime value corresponding to 1:20 pm on May
41 the 31st, 1999 for a timezone which is 5 hours behind Coordinated Universal Time (UTC).
42  */
43 public final class XfDateTime extends XFunction
44 {
45
46     private static final String JavaDoc RCSRevision = "$Revision: 1.3 $";
47     private static final String JavaDoc RCSName = "$Name: $";
48
49
50     /**
51     @roseuid 3BD1922C00FF
52      */
53     public XfDateTime()
54     {
55         super("XfDate");
56     }
57
58     /**
59     @param dateTimeString
60     @roseuid 3BD1914B02F0
61      */
62     public XfDateTime(Expression arg0)
63     {
64         super("XfDate");
65         setArgument(0, arg0);
66     }
67
68     /**
69     @param visitor
70     @return org.xquark.extractor.sql.SqlExpression
71     @throws org.xquark.extractor.common.SqlWrapperException
72     @roseuid 3BD1922C011D
73      */
74     public SqlExpression accept(org.xquark.extractor.algebra.GenSqlVisitor visitor)
75     {
76         return visitor.visit(this);
77     }
78
79     public void accept(org.xquark.extractor.algebra.AlgebraVisitor visitor)
80     {
81         visitor.visit(this);
82     }
83 }
84
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