Hello all
I think that the problem is somewhere here:
public static void preFetchRelationship(String entityName, String
relationshipName, NSArray<?> objects, EOEditingContext ec) {
// EOEntity eoEntity = getEntityModelManager().getEOEntity(entityName);
// EODatabaseContext dc =
EODatabaseContext.registeredDatabaseContextForModel(eoEntity.model(), ec);
// EORelationship rel = eoEntity.relationshipNamed(relationshipName);
// batchFetchRelationship(dc, rel, objects, ec, true);
}
databaseContext.batchFetchRelationship(relationship, objectsToBatchFetch,
editingContext);
Seems that commenting all prefetches fixed problem with connections closed.
But why?
Best regards,
Vladimir Gadyatskiy
On Mar 21, 2013, at 5:06 PM, Chuck Hill wrote:
> Another possibility is that something in your code (or Wonder, unlikely to be
> in WO itself) is accessing the database context or below without proper
> locking and using and closing this statement behind EOF's back. It looks
> less like a race condition and more like an improperly shared resource.
>
> Chuck
>
> On 2013-03-21, at 7:47 AM, Michael Gargano wrote:
>
>> Hi Vladimir,
>>
>> Mark and I work together. We have not found the solution to
>> this problem. We modified the postgres jdbc driver to provide some
>> additional logging, and whatever slight delay that has added seems to have
>> lessened the frequency of the problem. We’re not sure where it is
>> happening, but I’m convinced it has to be a race condition in wonder or EOF
>> at this point (unless there’s something wrong with the postgres jdbc driver
>> which I find hard to believe since so many people are using it). I’ve
>> included Mark on this email as well. Maybe we can find a solution.
>>
>> Thanks.
>> -Mike
>>
>>
>> From: [email protected]
>> [mailto:[email protected]] On
>> Behalf Of vladimir gadyatskiy
>> Sent: Wednesday, March 20, 2013 3:25 PM
>> To: WebObjects Development
>> Subject: RE: EOF - statement has been closed?
>>
>> Hello, all
>>
>> Sorry, I do not know how to ask Mark Cassidy directly, he'd asked about
>> connection lost problems here:
>> http://lists.apple.com/archives/webobjects-dev/2013/Jan/msg00429.html
>> Mark, did you find a solution? Seems we have the same problems with Postgres
>> 9.2...
>> Thanks for any help.
>>
>> Best regards,
>> Vladimir Gadyatskiy
>>
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> Chuck Hill
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