Re: [Pharo-users] [Pharo-dev] What is the craziest bug you ever face

[Benoit St-Jean via Pharo-users]

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My worst bug(s) is(are) related to the TopLink ORM.
In one particular case, we were working on a *huge* system and different 
"modules" were assigned to different teams.  Every module was working perfectly 
by itself (as confirmed by the SUnit testing) but sometimes, the database would 
get out of whack.
I finally realized that depending on the classes you used to perform object 
deletion (we had a parent-children-familymembers kinda model), none of the 
"modules" did it the same way and they all differed when it came to access the 
to-be-deleted object.  Most classes accessed the same "kind" of object from a 
single access point but not all of them!  That did create interesting problems 
where the to-be-deleted object reappeared in the database with old values, or 
just vanished during some operation only to reappear afterwards...  Besides, 
debugging proxies and cached objects is a real pain in the *ss !  And in many 
cases, you can't ever log properly anything as it would instantiate the 
proxies!  So I ended up not trusting the Smalltalk side of things and worked my 
way out from DB/2 logging only!    ----------------- 
Benoît St-Jean 
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"A standpoint is an intellectual horizon of radius zero".  (A. Einstein)





   

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