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


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 6.4.4 xf:get-hour-from-time
29 xf:get-hour-from-time(time? $srcval) => integer?
30 Returns an integer representing the hour identified in the value of $srcval. The hour value ranges
31 from 0 to 23, inclusive. If $srcval is the empty sequence, returns the empty sequence.
32 6.4.4.1 Examples
33 xf:get-hour-from-time(xf:dateTime("11:23:00")) returns 11 .
34  */
35 public final class XfGetHourFromTime extends Xfunction_Integer
36 {
37
38     private static final String JavaDoc RCSRevision = "$Revision: 1.3 $";
39     private static final String JavaDoc RCSName = "$Name: $";
40
41
42     /**
43     @roseuid 3BD185B1035D
44      */
45     public XfGetHourFromTime()
46     {
47          super("XfGetHourFromTime");
48     }
49
50     public XfGetHourFromTime(Expression arg0)
51     {
52         super("XfGetHourFromTime");
53         setArgument(0, arg0);
54     }
55
56     public SqlExpression accept(org.xquark.extractor.algebra.GenSqlVisitor visitor)
57     {
58         return visitor.visit(this);
59     }
60
61     public void accept(org.xquark.extractor.algebra.AlgebraVisitor visitor)
62     {
63         visitor.visit(this);
64     }
65 }
66
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