[SQL-CVS] [ sqlobject-Bugs-3525829 ] KeyError in multiprocessing environment

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Bugs item #3525829, was opened at 2012-05-11 06:34
Message generated for change (Comment added) made by ljsilver
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Category: General
Group: SQLObject from repository
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: LJSilver (ljsilver)
Assigned to: Nobody/Anonymous (nobody)
Summary: KeyError in multiprocessing environment

Initial Comment:
When disabling the cache, SQLObject works quiet well in a multiprocessing environment.

Sometimes SQLObject throws KeyError from the sqlobject.cache.CacheSet.put method in the following line:
self.caches[cls.__name__].put(id, obj)

This seems to be because of a mapped object is put back to the DB without getting it from the DB in the same process.

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>Comment By: LJSilver (ljsilver)
Date: 2012-05-11 06:35

Message:
I've managed to fix it using the following monkey patch:

def sqlobject_cache_put_monkey(self, id, cls, obj):
    try:
        self.caches[cls.__name__].put(id, obj)

    except KeyError:
        self.caches[cls.__name__] =
sqlobject.cache.CacheFactory(*self.args, **self.kw)
        self.caches[cls.__name__].put(id, obj)
sqlobject.cache.CacheSet.put = sqlobject_cache_put_monkey

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You can respond by visiting: 
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