[Grok-dev] A case of a mysteriously stalling grok.Container

Sebastian Ware sebastian at urbantalk.se
Thu Sep 24 13:10:58 EDT 2009

Thanks. I have rewritten the code five times in different ways and now  
it works. I am not sure I will be able to isolate the problem  
eventhough it was fairly consistent...  however when dropping into the  
debugger the code never failed so I am guessing some kind of event  
deadlock. Possibly related to indexing, but this is a just a guess.

I was doing stuff in grok.Annotation and in ordinary grok.Containers  
in the same operation. Whereas I guess this shouldn't be a problem, it  
seemed to be the only obvious circumstance.

Anyway, if someone else runs into a similar problem. Try implementing  
without annotations. That was the route that solved my problem. That  
said. I never got to the bottom of the problem and now that I have got  
it working I have lost too much time to investigate further.

Mvh Sebastian

On 24 sep 2009, at 16.54, Martijn Faassen wrote:

> Sebastian Ware wrote:
>> I am not getting any errors and I am having difficulties narrowing
>> down the problem but...
>> In a view, I am doing a simple:
>>   self.context['a_container']['myId_x'] ≈ an_object
>> then I delete the object
>>   del self.context['a_container']['myId_x']
>> next time I try to assign the same object with the same id
>>   self.context['a_container']['myId_x'] ≈ an_object
>> The application stalls without any error message. It requires a  
>> restart.
>> I apologies for the vague description of the error, but has anyone
>> experienced anything similar?
> Never seen that before. To get more help you should definitely try to
> cut this problem down to a small test case. Do you have any event
> handlers that get triggered by adding or removing an object?
> Regards,
> Martijn
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