I have been fighting all day to understand a bug with the unregistration
of a utility from a local site.
After unregistration, some instance is left in the _subscribers list of
the utilities AdapterRegistry in my local site.
This avoids me to remove the code as it does leave a broken object.
I have come to the conclusion that the code that first registered the
utility is the culprit : the utility itself is not persistent.
It seems that the utility instance is unserialized at least two times
during unregistration, which leads (if I understand well) to two
different objects in memory.
This breaks the unsubscription algorithm that is based on object identity.
I naively tried to introduce the Persistent base class into the utility
calss. When I try to access the utility instance again, I get the error
mentioned in the subject of this mail :
TypeError: ('object.__new__(SyncedLanguages) is not safe, use
Persistence.Persistent.__new__()', <function _reconstructor at
'Products.LinguaPlone.vocabulary.SyncedLanguages'>, <type 'object'>, None))
If I understand well, the a posteriori introduction of Persistent cannot
Can anyone tell me what I should do add to the class I try to make it
actually persistent ?
PS: It is late here, I hope I have not told too many silly things
Godefroid Chapelle (aka __gotcha) http://bubblenet.be
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