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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Next Round
Don Park writes:
> Or we could just redefine setDocumentHandler so that LexicalHandler is
> automatically set if the given DocumentHandler implementation also
> implements that interface. The two interfaces are strongly related after
> all.
That's a bit Java-specific -- not all languages actually allow you to
dynamically determine this sort of thing at runtime.
> >3. Namespace Support
>
>
> How about this?
>
> public interface NamespaceHandler {
> public void startNamespace(Namespace ns);
> public void endNamespace();
> }
>
> public interface Namespace {
> public String getPrefix(String qname);
> public String getURI(String qname);
> }
That's really one level higher -- in general, SAX provides information
at the lowest possible level so that implementations can build on top
of it.
> For efficiency sake, we might also require that if NamespaceHandler is
> supported then all names (tag name, attribute name, namespace prefix and
> URI) should be 'interned'.
The trouble is that Java's intern, at least in 1.1, is incredibly
inefficient -- it turned up as one of the biggest bottlenecks back
when I was profiling AElfred -- so any parser writer worth his/her
salt is implementing a separate intern anyway.
All the best,
David
--
David Megginson david@m...
http://www.megginson.com/
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