[ZODB-Dev] How do you "wake up" sleepy persistent objects?

[Greg Ward]

On 11 October 2001, Patrick K. O'Brien said:
> When a persistent object is in the ghost state, it appears that the results
> of dir(object) are not the same as when the object is in some other state.
> It also appears that doing dir(object) wakes up the object (albeit, after
> the fact) so that a subsequent dir(object) returns the results that you
> would expect.

I have observed exactly that behaviour myself.  AFAIK, it's not
documented anywhere.  I usually use dir(self) to "wake up" a ghost
object, although I have also been known to use hasattr(self, "foo").  I
doubt that it matters, but dir(self) seems cleaner.  It seems that you
just need to do something that requires the object's __dict__.

        Greg
-- 
Greg Ward - software developer                gward@mems-exchange.org
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