Perhaps I'm missing something but it seems you've extended Node but not
ElementNSImpl to implement this new interface. You'd also have to return
an instance of the subclass from Document.createElementNS(). If you
haven't done that then the ClassCastException should be expected since the
element doesn't implement SecureDocument.
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote on 02/21/2005 11:11:05 AM:
> Hello,
>
> I got a strange exception. Here is my problem :
>
> public interface SecureDocument extends Node {
> }
>
> public class SecDocImpl extends DocumentImpl {
>
> public static void main(String[] args) {
>
> try {
>
> InputStream is = new FileInputStream("pathtofile");
> DOMParser p = new DOMParser();
>
>
>
p.setProperty("http://apache.org/xml/properties/dom/document-class-name";,
> "mypackage.SecDocImpl");
>
> p.parse(new InputSource(is));
> SecDocImpl m= (SecDocImpl)p.getDocument() ;
> is.close();
>
> DocumentImpl tmp = (DocumentImpl)m ;
> Element e = tmp.getDocumentElement() ;
> Node r = (Node)e ; //it's just to try
> here is the error------> SecureDocument root =
> (SecureDocument)e ;
>
> } catch (Exception e) {
> System.err.println("error") ;
> }
> }
> }
> }
>
> And the exception is :
> java.lang.ClassCastException:
> org.apache.xerces.dom.ElementNSImpl
>
> with no more explanation.
>
> Can anybody help me ?
>
>
>
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Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: [EMAIL PROTECTED]
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