[ZODB-Dev] [ zodb-Bugs-631680 ] Error in objects un-created due to undo

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Bugs item #631680, was opened at 2002-10-31 17:56
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Magnus Lyckå (mly)
Assigned to: Jeremy Hylton (jhylton)
Summary: Error in objects un-created due to undo

Initial Comment:
If an object is created in a transaction, and this
transaction is removed with db.undo(), the object is so
to say "un-created" (or George Bailey'd) in the database.

It might still exist in the running program though. If
you try to access attributes of this object using
FileStorage, you will get "error: unpack str size does
not match format" with Python 2.2, and "OverflowError:
long int too large to convert" with Python 2.1. Correct
error (as seen in Berkeley Full storage) would be a
KeyError.

(I'm not sure whether anything else regarding these
objects should be handled differently.)

Test script that will trigger the error is attached.


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>Comment By: Jeremy Hylton (jhylton)
Date: 2003-01-17 19:42

Message:
Logged In: YES 
user_id=31392

This was fixed.


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Comment By: Jeremy Hylton (jhylton)
Date: 2002-11-20 18:41

Message:
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user_id=31392

I believe this will be fixed in 3.1.1.  Would you be able to 
check against the CVS version of ZODB in ZODB3_3-
1_branch?


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