[Zope] ZODB drops _v_ attributes.

[Toby Dickenson]

On Tuesday 08 April 2003 4:14 pm, Etienne Labuschagne wrote:

> Normally (in my code anyway) I will instantiate the volatiles with the
> setstate method (in Zope programming anyway).
>
> 1. Is setstate Zope specific, or is it called for any ZODB persistent
> object (i.e. a stand-alone ZODB application)?

it is not zope specific

> 2. If my object turns into a ghost and after a while I start using it
> again, will setstate be called again (thus initialising the _v_'s again) or
> must I check manually that my _v_'s are still there, and do something if
> not?

It will be called.

> 3. Is there a way to force the refresh of an in-memory object so that
> setstate is called again (obviously, I can probably just call setstate
> manually by myself? But again - that needs a state parameter. . .)

my_object._p_deactivate() will turn my_object into a ghost.  setstate will be 
called on the next attribute access


-- 
Toby Dickenson
http://www.geminidataloggers.com/people/tdickenson