XOM API for Processing XML with Java

[Elliotte Harold <elharo AT metalab.unc.edu>]

You mentioned a couple of hot spots:

1) allow to selectively disable the Verifiersanity checks for URIs and 
PCDATA via System properties, and 2) maintain an internal String instead 
of an UTF-8 encoded byte array in Text, which eliminates the expensive 
character conversions implied for each access to a Text object. This 
increases performance at the expense of memory footprint.

I can certainly believe #2. #1 surprises me. Did you find this while 
serializing and deserializing or doing something else? Generally XOM 
should not be verifying PCDATA when serializing or parsing, only when 
creating new nodes from a non-parser source.

XOM does check namespace URIs (on parsing only) because parsers don't do 
a full job of that. Hmm, looking at the code now I do see a way I could 
cut a chunk of that out though. I'm not sure how big the effect would 
be, but it might save some time. There are also a few places in the URI 
verification code I could replace String concatenation with 
StringBuffers, though again I'm not sure how big the effect would be.

--
Elliotte Rusty Harold  elharo AT metalab.unc.edu
XML in a Nutshell 3rd Edition Just Published!
http://www.cafeconleche.org/books/xian3/
http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ref=nosim