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Java > Open Source Codes > org > xquark > xquery > parser > primitivefunctions > xsfunctions > FunctionSTRING


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.xquery.parser.primitivefunctions.xsfunctions;
24
25 import java.util.ArrayList JavaDoc;
26
27 import org.xquark.xquery.parser.*;
28 import org.xquark.xquery.typing.TypeException;
29
30 /*
31 Returns the value of $srcval represented as a string. If no argument is supplied, $srcval defaults to the context item (.).
32 If $srcval is the empty sequence, the zero-length string is returned.
33 If $srcval is a node, the function returns the string value of the node, as obtained using the string-value accessor defined in the [XQuery 1.0 and XPath 2.0 Data Model].
34 If $srcval is an atomic value, then the function returns the same string as is returned by the expression cast as xs:string ($srcval), except in the cases listed below:
35 If the type of $srcval is xs:anyURI, the URI is converted to a string without any escaping of special characters.
36 */
37
38 public class FunctionSTRING extends PrimitiveFunctionCall {
39     
40     private static final String JavaDoc RCSRevision = "$Revision: 1.6 $";
41     private static final String JavaDoc RCSName = "$Name: $";
42     
43     // #############################################################################
44 // VISITOR STUFF
45 // #############################################################################
46
47     public void accept(ParserVisitor visitor) throws XQueryException {
48         visitor.visit(this);
49     }
50     
51     // #############################################################################
52 // CONSTRUCTOR STUFF
53 // #############################################################################
54
55     public FunctionSTRING(ArrayList JavaDoc args, XQueryModule parentModule) throws TypeException, XQueryException {
56         super(new QName("string",null),args);
57         setParentModule(parentModule);
58         if (parentModule != null && parentModule.getStaticContext().getTypeVisitor() != null)
59             accept(parentModule.getStaticContext().getTypeVisitor());
60     }
61     
62     public void setArguments(ArrayList JavaDoc arguments) throws XQueryException {
63         if (arguments == null || arguments.size() != 1) throw new XQueryException("Only partial specification, function string should one argument");
64         super.setArguments(arguments);
65     }
66         
67 }
68
69
70
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