[Zope] Conflict Errors

[Chris McDonough]

Yeah, well... yeah.  (Staring at shoes)... conflicts can also happen 
on.. reads.  Yes.  Read conflicts, they're called.  This happens in the 
setstate method of Connection.py.  There's some explanation for this 
that has to do with consistency of data but I don't know it; at least I 
dont know it well enough to explain it competently.

Note that if you're patient enough, you might be able to take the 
consistency hit (whatever it is) and make use of the 
LowConflictConnection class that ships with CoreSessionTracking 0.9.. 
see the CST code to see how it's used.

Richard Jones wrote:
> Here I was I thought Conflict Errors only happen during writes, but I'm 
> getting conflict errors in the strangest places:
> 
> /home/zope/Zope/lib/python/Products/PageTemplates/Expressions.py line 332:
>                     o=object[name]
> 
> 
> inside our code, in a sorting function:
>             return cmp(getattr(x, attribute), getattr(y, attribute))
> 
> 
> Now these are "just" attribute/member accesses .. the objects holding the 
> attributes (ie. "object", "x" and "y") are PropertyManagers and 
> ObjectManagers.
> 
> Anyone have any hints?
> 
> 
>    Richard
> 
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-- 
Chris McDonough                    Zope Corporation
http://www.zope.org             http://www.zope.com
"Killing hundreds of birds with thousands of stones"