Well done - and here's the promised blogpost re my "null, null" error:

http://bloginblack.de/2011/12/coldfusion-null-null-errors-cfinterface-another-possible-reason/

:)

Cheers
Kai



> Hi everyone, I eventually sorted this out. 
> 
> I isolated the problem to a QoQ combined with some occasionally bad data. 
> 
> One of the queries contained un-typed columns. One column contained mainly 
> zeros but occasionally an empty string. 
> 
> I wasn't joining on this column but I was selecting it. 
> 
> CF tries to be smart and set a type on the resulting column in the new query. 
> It then barfs when it encounters the empty string.
> 
> In this case, garbage in garbage out would suit me fine, but no, it don't 
> work like that! 
> 
> Thanks everyone for your input, it's probably a CF bug, where an unexpected 
> error happens and CF doesn't produce a proper error for it. 
> 
> Cheers. 
> 
> On 07/12/2011, at 19:34 Kai Koenig <grmblz...@gmail.com> wrote:
> 
>>> 
>>> @Kai ... What about one of those JVM inspection tools, do they show 
>>> exceptions as they occur? Maybe we can see it there? 
>> 
>> Hmm, I wonder if one could actually see it in the list of thread stack 
>> traces in a full heap dump. I guess the thread causing the error would have 
>> to be running at the time you'd take the heap dump. 
>> 
>> But it's an interesting idea.
>> 
>> -- 



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