It is just a static utiiity method. It can be called from dao. Dao can be
called from anywhere.
Yes, that is the problem I think.
We'll check and give you a feedback.
thanks
Best regards,
Vladimir Gadyatskiy
On Mar 21, 2013, at 6:39 PM, Chuck Hill wrote:
> Where is that method from? It is doing unlocked EOF access and if it is not
> called from code that has the EOF stack locked, then yes that will cause this
> error.
>
> Chuck
>
>
> On 2013-03-21, at 8:57 AM, vladimir gadyatskiy wrote:
>
>> 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
>>> Executive Managing Partner, VP Development and Technical Services
>>>
>>> Practical WebObjects - for developers who want to increase their overall
>>> knowledge of WebObjects or who are trying to solve specific problems.
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>>
>
> --
> Chuck Hill
> Executive Managing Partner, VP Development and Technical Services
>
> Practical WebObjects - for developers who want to increase their overall
> knowledge of WebObjects or who are trying to solve specific problems.
> http://www.global-village.net/gvc/practical_webobjects
>
> Global Village Consulting ranks 13th in 2012 in BIV's Top 100 Fastest Growing
> Companies in B.C!
> Global Village Consulting ranks 76th in 24th annual PROFIT 200 ranking of
> Canada’s Fastest-Growing Companies by PROFIT Magazine!
>
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