XOM API for Processing XML with Java

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

Wolfgang Hoschek wrote:

> I think the URICache in Verifier was very good the way you had it.
>
> The lastet CVS improvement also checks for equals(). I think that's a 
> step back when you look at it from the point of lock contention in 
> multi-threaded environments. You need to keep any work inside static 
> synchronized blocks as brief as possible to avoid lock contention 
> becoming an issue. So I'd happily trade 10% performance improvement for 
> strongly reduced lock contention, leading to much better scalability. 
> The URIs are almost always constants anyway...

The problem is in testing I noticed we were missing the cache a lot more 
often than I expected because of multiple, non-interned namespace URIs. 
I'm not sure where they were all coming from but they were there, so I 
checked for == first and equals() only on cache miss.

--
Elliotte Rusty Harold  elharo AT metalab.unc.edu
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