Author Topic: Internal Null Pointer exception (Read 5608 times)

McMannus · « **on:** August 18, 2015, 05:59:45 pm »

Hi guys,

recently, I deployed our add-in to a customer running a SQL server repository. When he opens a model, the following error is shown, which indicates a null pointer exception for me. However, the information "Source = Line: 0; Char : 0, Code = 0x0" is kind of weird for me.

Does anyone experience this error already?

qwerty · « **Reply #1 on:** August 18, 2015, 07:12:35 pm »

Some XML/MDG error. Turn off all MDGs and back on one by one.

q.

McMannus · « **Reply #2 on:** August 19, 2015, 12:24:40 am »

The MDG is loaded from within the add-in. This used to work with local repositories perfectly so I wonder how there can be errors with remote repositories here.

qwerty · « **Reply #3 on:** August 19, 2015, 03:18:44 am »

Ask the add-in developer

q.

McMannus · « **Reply #4 on:** August 19, 2015, 07:19:47 pm »

Oops, that's me ;-)

McMannus · « **Reply #5 on:** August 20, 2015, 12:40:39 am »

OK, for all interested bug fixers the reason for this message:

Code: [Select]

SELECT MAX(column) FROM table
and

Code: [Select]

double quotes in queries
do not work with MS SQL Server repositories. At least with 2008.

qwerty · « **Reply #6 on:** August 20, 2015, 01:45:27 am »

Or to put it with George Orwell: All SQL are equal. But some SQL are more equal than others.

q.

Geert Bellekens · « **Reply #7 on:** August 21, 2015, 04:54:49 pm »

I knew I saw the error before, I just couldn't remember in which context.

I should have known however. I had my fair share of SQL syntax incompatibilities.

I wrote a few functions in my framework to adjust the SQL to the syntax of the targetted system.
Check the operation formatSQL on the Model class

Geert

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