SAX2: Namespace Processing and NSUtils helper class

James Clark jjc at
Thu Dec 16 06:45:11 GMT 1999

David Megginson wrote:
> Tim Bray <tbray at> writes:
> > So I think it would be cleaner to deal with the fact that names can have
> > two parts, and not kludge them together with {} marks.  -Tim

I tend to agree: pasting the namespace URI and local name together is a
hack. Perhaps it's justified for backwards compatibility. (I did it
myself in expat for this reason, so I can't really complain if SAX2 does

> So, in other words, we'd have something like this:
>   public interface DocumentHandler2 extends DocumentHandler {
>     public void startElement (String ns, String name, AttributeList2 atts);
>     public void endElement (String ns, String name);
>   }
>   public interface AttributeList2 extends AttributeList {
>     public String [] getName (int i);
>     public String getType (int i);
>     public String getValue (int i);
>     public String getType (String ns, String name);
>     public String getValue (String ns, String name);
>   }
> We talked about this a few months ago, but I'd be happy to hear what
> people think now.

For some applications (for example, layering DOM2 on top of SAX2), it's
really useful to have prefixes as well.  So I would rather see:

final class Name {
  public String getNamespaceURI();
  public String getLocalName();
  public String getPrefix();

public interface DocumentHandler2 extends DocumentHandler {
  void startElement(Name name, AttributeList2 atts);
  void endElement(Name name);


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