may this be the reason?
public void setWeight(BigDecimal aValue) {
if(weight().compareTo(aValue) != 0) {
if(weight().compareTo(BigDecimal.ZERO) == 0
|| aValue.compareTo(BigDecimal.ZERO) == 0)
_integralPresenter = null;
super.setWeight(aValue);
}
}
public BigDecimal weight() {
BigDecimal weight = super.weight();
if(weight == null) return null;
if(weight.compareTo(BigDecimal.ZERO) == 0)
return BigDecimal.ZERO;
weight = weight.stripTrailingZeros();
if(weight.scale() < 0)
weight.setScale(0);
return weight;
}
where weight is EO attribute
And another guess: fetching from the same ec for setting default
values in awakeFromInsertion?
2010/1/12 Chuck Hill <ch...@global-village.net>:
>
> On Jan 11, 2010, at 2:14 PM, Gennady Kushnir wrote:
>
>> I am on MySQL 5.0.x
>> I don't use change notification framework.
>> Stack trace of exception says it is raised during ec.saveChanges().
>>
>> May it be caused by using nested editing contexts?
>
> Maybe if you are using them incorrectly.
>
>
>> Unfortunately I have no idea how to isolate a problem. I can not even
>> reproduce it.
>> Myself I have only seen it once "in action". Mostly I can only see it
>> in logs. And I can't afford to limit functionality of a working
>> system.
>> Furthermore I assume it is in the most actively employed part of a
>> system. As most errors take place there. But maybe it is only because
>> the majority of saves are performed there...
>>
>> Maybe I could diagnose the problem injecting some testing somewhere?
>> Maybe in editingContext subclass?
>
> I'd start by taking a careful look at the full exception stack traces to see
> if you can isolate where this is happening and then go back and very
> carefully review that code.
>
> After that, you would need to start disassembling the Java to see where
> things go wrong and try and get some information logged out. That may
> require replacing parts of EOF. This is far easier with Wonder but it is
> still not easy. I have had the most success by carefully looking at the
> code after looking at the stack traces.
>
>
> Chuck
>
>
>>
>>
>> 2010/1/11 Kieran Kelleher <kieran_li...@mac.com>:
>>>
>>> On Jan 11, 2010, at 1:59 PM, Chuck Hill wrote:
>>>
>>>> On Jan 11, 2010, at 10:33 AM, Kieran Kelleher wrote:
>>>>>
>>>>> On Jan 11, 2010, at 1:03 PM, Chuck Hill wrote:
>>>>>>
>>>>>> On Jan 11, 2010, at 4:26 AM, Gennady Kushnir wrote:
>>>>>>
>>>>>>> Hello again.
>>>>>>> I've got it that I was doing something wrong. I've found and removed
>>>>>>> several commandments violations, employed MultiECLockManager for
>>>>>>> properly locking everything... but I am still getting these errors!
>>>>>>> How could I track where is that violation hidden within over 5000
>>>>>>> rows
>>>>>>> of code?
>>>>>>
>>>>>> There are many, many ways in which things can be done wrong. I don't
>>>>>> know of any easy way to find the source. If you can isolate and
>>>>>> reproduce
>>>>>> the problem in a minimum set of steps, that will reduce the amount of
>>>>>> code
>>>>>> you have to look at.
>>>>>>
>>>>>>
>>>>>>> These errors raise without any visible dependencies.
>>>>>>> Users report that even when system says that it could not save
>>>>>>> something (because of that strange error), actually data is saved and
>>>>>>> can be reviewed after logging out and in again.
>>>>>>
>>>>>> Something else is happening in your code then. Perhaps this is not
>>>>>> from
>>>>>> a save? Nothing should get written to the database if this happens
>>>>>> during a
>>>>>> saveChanges. Maybe this is happening in your app just after
>>>>>> saveChanges()?
>>>>>
>>>>> Hmmm ....... half-saving transactions is a common problem when you
>>>>> don't
>>>>> use a transactional database and no "transaction rollback" is available
>>>>> when
>>>>> ec fails during a save. What database engine are you using?
>>>>
>>>>
>>>> Now who would use a squirrelly mock database like that?!!?
>>>
>>>
>>> Someone who acquires a Ferrari and drives it in first gear because they
>>> have
>>> never used a "stick-shift" car before! :-P
>>>
>>>
>>>>
>>>> :-P
>>>>
>>>> Chuck
>>>>
>>>> --
>>>> Chuck Hill Senior Consultant / VP Development
>>>>
>>>> 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/products/practical_webobjects
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>
> --
> Chuck Hill Senior Consultant / VP Development
>
> 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/products/practical_webobjects
>
>
>
>
>
>
>
>
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