XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

> I hear bad things about the performance impact of integrating
> namespace support into things, things like DOM and XPath. Has anyone
> some quantified numbers or should I just make them up?

The performance and memory issues may perhaps be solvable to a large 
degree with careful thought and implementation.

It's a little off-topic, but for example, the binary xml codec goes to 
great lengths to handle namespaces as efficiently as possible.
But if you have a lot of additional namespace declarations (just using 
namespaced nodes is fine), e.g. ala SOAP, the serialization performance 
can still suffer by some 50%. Have a look at the implementation of 
nu.xom.Namespaces and Element.getNamespace*() and related methods to 
see why.