Definitely the underlying cause for the exception, but as far as what triggered 
this event, that's a tougher one. It doesn't really make sense to me, actually. 
The only API that actually mutates EOObjectStore's userInfo dict is 
setUserInfoForKey, which isn't called anywhere in the code. Are you using this 
method in your own code? All the other accesses of EOObjectStore's userInfo 
result in copies, so I'm not sure who actually modified the thing underneath 
you. Definitely there is a locking bug in this code, though. Either it needs to 
be under the standard objectstore lock (which EOUtilities isn't respecting), or 
it needs to be synchronized (which it's not).

ms

On Apr 7, 2010, at 7:24 AM, Andrew Lindesay wrote:

> (Mike - 20hrs ago)
>> random wo tip: iterating keys on NSDictionary = copy, iterating keys on 
>> HashMap = no copy. if you change dict=>map, beware ConcurrentModExc
> 
> ^^^ What a co-incidence... probably related issue. I guess there's no easy 
> fix for this other than lodging a radar.
> 
>> I thought I'd ask if anybody else has had any experience with this one?
>> 
>>> java.util.ConcurrentModificationException
>>> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
>>> at java.util.HashMap$KeyIterator.next(HashMap.java:828)
>>> at com.webobjects.foundation.NSDictionary.<init>(NSDictionary.java:369)
>>> at com.webobjects.foundation.NSDictionary.<init>(NSDictionary.java:397)
>>> at com.webobjects.eocontrol.EOObjectStore.userInfo(EOObjectStore.java:347)
>>> at 
>>> com.webobjects.eoaccess.EOModelGroup.modelGroupForObjectStoreCoordinator(EOModelGroup.java:795)
>>> at com.webobjects.eoaccess.EOUtilities.modelGroup(EOUtilities.java:1045)
>>> at 
>>> com.webobjects.eoaccess.EOUtilities.databaseContextForModelNamed(EOUtilities.java:809)
> 
> ___
> Andrew Lindesay
> www.silvereye.co.nz
> 


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