Jim Fulton wrote: > On Nov 14, 2008, at 6:16 PM, Paul Winkler wrote: > >> If I instantiate a subclass of Persistent, but I don't ever assign it >> as an attribute on the root (or any other Persistent instance) ... >> then what happens to my instance when the transaction commits? >> >> A) it's saved in the ZODB, but not reachable? >> or >> B) it's never saved at all? >> or >> C) something else that I can't imagine? > > > B. IOW, nothing.
... which opens the door for a lot of interesting ways to use the persistence framework. Linking your object to the root causes your object to be managed by a ZODB.Connection and you get all the associated assumptions about pickling, ID management, etc. But if you instead assign the object to some persistence manager other than a ZODB.Connection, you could integrate with other kinds of storage systems without using pickles. I don't think this area has been explored nearly as much as it deserves. Shane _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
