Willadsens wrote:
Chris, please help me understand how this makes a difference in ZODB.
I currently store a persistent list in the ZODB as follows:
root[db_name] = some list


What class do you use for the list?

I suspect root's class isn't too clever, but I can't remember...

Are you suggesting that I store it in some other, nested dictionary off of root, such as:
root[db_name][listname] = some list

Yes, in particular:

from BTrees.OOBTree import OOBTree
root[db_name]=OOBTree()
root[db_name]['something']=your_list

the btrees implementations are specially designed to minimise the kind of conflict errors you've been experiencing. They work just like python dictionaries...

cheers,

Chris

--
Simplistix - Content Management, Zope & Python Consulting
           - http://www.simplistix.co.uk
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