[xml] Using flyweights to reduce DOM size

[Matt Sergeant <matt sergeant org>]

I tried to parse a 54M XML file today (the gcide websters dictionary) to
see what would happen. When it started to go into swap I had to kill it...

MSXML uses flyweights [1] to reduce the size of thier DOM. They have some
documentation on MSDN about how a MSXML DOM is generally about 0.9 to 1.1
times the size of the original XML. I believe they also get a performance
boost from this.

Any thoughts on using the flyweight design pattern in libxml?

[1] A well known design pattern, see
http://www.mindspring.com/~mgrand/pattern_synopses.htm#Flyweight

-- 
<Matt/>

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