Hi,I finished my diploma thesis about indexing and querying objects  (only available in german - sorry) last year.
With that thesis I developed some piece of software, which can be used to query for objects within the ZODB with a XPath like syntax (its called "regular path expressions"). I released a very pre-alpha version some days ago at pypi . If you are interested, feel free to play with it and report me your experiences. Please also report bugs to .
If you have questions, please send me an Email. Kind regards, Sebastian  http://archiv.tu-chemnitz.de/pub/2008/0081/data/diplomarbeit.pdf  http://pypi.python.org/pypi/gocept.objectquery/  https://bugs.launchpad.net/gocept.objectquery -- Sebastian Wehrmann · s...@gocept.com gocept gmbh & co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 12 · fax +49 345 1229889 1 Zope and Plone consulting and development
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