XOM API for Processing XML with Java

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

Wolfgang Hoschek wrote:


> It doesn't occur in my use cases, but if one had an app that exchanges 
> many identically formed small XML protocol messages and that app 
> happened to use internal DTD subsets it would take a large hit. So more 
> immediately useful than a ThreadLocal is a small string cache similar in 
> spirit to Verifier.URICache. I think that should eliminate problems for 
> all but bizarre use cases. Checking for a cache hit with == doesn't make 
> much sense here; one needs to check with equals(). I think keeping the 
> same cache size (6) is just fine.

This would on;y help if the internal DTD subsets, and therefore likely 
the whole DocTypes were the same across many messages. In this case 
(frequent reuse of the same DTD) you could just make one DocType and 
keep copying it with the copy constructor, which bypasses the check, I 
should probably add a note about this (and similar techniques) to the FAQ.

--
Elliotte Rusty Harold  elharo AT metalab.unc.edu
XML in a Nutshell 3rd Edition Just Published!
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