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Java > Open Source Codes > org > xquark > xquery > parser > InstanceOfExpression


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;
24
25 import org.xquark.xquery.typing.TypeException;
26
27
28 public class InstanceOfExpression extends XQueryUnaryOperatorExpression implements Cloneable JavaDoc {
29
30     private static final String JavaDoc RCSRevision = "$Revision: 1.11 $";
31     private static final String JavaDoc RCSName = "$Name: $";
32
33     // cannot be null
34 // W3C WD 16 August 2002
35 // change QName in SequenceTypeExpression
36 protected SequenceType sequenceType = null;
37
38     // #############################################################################
39 // VISITOR STUFF
40 // #############################################################################
41
42     public void accept(ParserVisitor visitor) throws XQueryException {
43         visitor.visit(this);
44     }
45
46     // #############################################################################
47 // CONSTRUCTOR STUFF
48 // #############################################################################
49
50     public InstanceOfExpression(XQueryExpression expression, SequenceType sequenceType, XQueryModule parentModule) throws TypeException, XQueryException {
51         super(expression);
52         setSequenceType(sequenceType);
53         setParentModule(parentModule);
54         if (parentModule != null && parentModule.getStaticContext().getTypeVisitor() != null)
55             accept(parentModule.getStaticContext().getTypeVisitor());
56     }
57
58     // #############################################################################
59 // ATTRIBUTE ACCESS STUFF
60 // #############################################################################
61
62     public SequenceType getSequenceType() {
63         return sequenceType;
64     }
65     public void setSequenceType(SequenceType sequenceType) throws XQueryException {
66         // cannot be null
67 if (sequenceType == null)
68             throw new XQueryException("sequenceType of InstanceOfExpression cannot be null");
69         this.sequenceType = sequenceType;
70         this.sequenceType.setParentModule(parentModule);
71         this.sequenceType.setParentExpression(this);
72     }
73
74     // #############################################################################
75 // CLONE STUFF
76 // #############################################################################
77 public void addParentExpression(XQueryExpression parentExpression) {
78         addParentExpression(parentExpression);
79         sequenceType.addParentExpression(parentExpression);
80         if (expression != null)
81             expression.addParentExpression(parentExpression);
82     }
83
84 }
85
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