Sparx Systems Forum

Enterprise Architect => Automation Interface, Add-Ins and Tools => Topic started by: meierch on July 26, 2010, 04:51:03 pm

Title: Validation error message ...
Post by: meierch on July 26, 2010, 04:51:03 pm

I have created a small set of validation rules following the example in the user manual. This works in general very wll- just from time to time I receive the following error popup:

EA_OnRunConnectorRule: Object reference not set to an instance of an object

I don't know what this means ....

Title: Re: Validation error message ...
Post by: Geert Bellekens on July 26, 2010, 04:59:24 pm

That is the equivalent of the nullpointer exception.
It means that you are trying to get an attribute, or execute an operation on a variable that hasn't been initialised. (or has been initialised with null).
Add something like "if myVar is not null then..."

Geert

Title: Re: Validation error message ...
Post by: meierch on July 28, 2010, 05:43:34 am

Thanks Geert

That was helpfull! I found the bug - it was indeed a variable with a null value. We have rules regarding the elements conveyed on information flows. I did some SQL stuff to retrieve the conveyed elements to validate them  - in some cases I did really get a null element.

Regards
Christian
 ;D