Shaun Cutts wrote:
When a container gets pickled to be put into zodb, what happens to the
subtree?
If the container has references to stuff that is contains, one of two
things could happen:
1. If the contents subclass persistent, then they will end up in their
own pickle in the zodb and will be made persistent
2. If they don't, they will still be persisted but will end up in the
container's pickle in the zodb.
Is it just left as a big "clump of stuff" for the garbage
collector to deal with?
As with all object, not until nothing references it ;-)
If so, maybe __parent__ should be a weakref,
Well, if you respect the interface, that's your choice. Not sure a
weakref can respect the interface though...
because tracing around all of the cycles in the tree by the gc must
surely be inefficient, and using a weakref here should make the subtrees
"dissolve" more easily.
Why dissolve?
cheers,
Chris
--
Simplistix - Content Management, Zope & Python Consulting
- http://www.simplistix.co.uk
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