Native xml db for rails



I’m an xmldb newb, as I expect most are since xquery only got nailed a
few months ago. I know nothing more than reading around the subject
and a couple of hours tinkering with sleepycats offering. Enough
though to make me realise the potential of an xml database though. I
dont really have a spare supercomputer to parse xml documents to
compete with a relational database on speed but it would have some
cool features.

Not being as familar with the activerecord source as I should be…
would it ever be possible to write an xmldb adaptor for activerecord
or is it just too SQL. Prehaps ActiveDocument? …If only I was mark