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Java > Open Source Codes > net > sf > saxon > query > UndeclaredVariable


1 package net.sf.saxon.query;
2
3 import net.sf.saxon.expr.BindingReference;
4 import net.sf.saxon.expr.VariableDeclaration;
5 import net.sf.saxon.instruct.GlobalVariable;
6 import net.sf.saxon.trans.XPathException;
7
8 import java.util.Collections JavaDoc;
9 import java.util.Iterator JavaDoc;
10
11 /**
12  * An UndeclaredVariable object is created when a reference is encountered to a variable
13  * that has not yet been declared. This can happen as a result of recursive module imports.
14  * These references are resolved at the end of query parsing.
15  */
16
17 public class UndeclaredVariable extends GlobalVariableDefinition {
18
19     public void transferReferences(VariableDeclaration var) {
20         Iterator JavaDoc iter = references.iterator();
21         while (iter.hasNext()) {
22             BindingReference ref = (BindingReference)iter.next();
23             var.registerReference(ref);
24         }
25         references = Collections.EMPTY_LIST;
26     }
27
28     public GlobalVariable compile(StaticQueryContext env, int slot) throws XPathException {
29         throw new UnsupportedOperationException JavaDoc("Attempt to compile a place-holder for an undeclared variable");
30     }
31 }
32
33 //
34 // The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
35 // you may not use this file except in compliance with the License. You may obtain a copy of the
36 // License at http://www.mozilla.org/MPL/
37 //
38 // Software distributed under the License is distributed on an "AS IS" basis,
39 // WITHOUT WARRANTY OF ANY KIND, either express or implied.
40 // See the License for the specific language governing rights and limitations under the License.
41 //
42 // The Original Code is: all this file.
43 //
44 // The Initial Developer of the Original Code is Michael H. Kay
45 //
46 // Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
47 //
48 // Contributor(s): none
49 //
50
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