[rules-users] NullPointerException when updating a fact

Stephen Masters stephen.masters at me.com
Tue Jul 30 04:50:36 EDT 2013


The fact that all of your classes were static was ringing alarm bells, so I tested it without that.

It works perfectly well if you remove 'static' from everything.

Steve


On 30 Jul 2013, at 08:43, schenka7 <eugen.berenstein at gmail.com> wrote:

> I have appended the code that leads to the exception.
> 
> I have also noticed that the exception doesn't arise when using the concrete
> FirstName type in the retracting rule. I have been using the generic base
> class Value because I didn't want to write the same rule for all types
> extending from it.
> 
> Main.java <http://drools.46999.n3.nabble.com/file/n4025204/Main.java>  
> validation.drl
> <http://drools.46999.n3.nabble.com/file/n4025204/validation.drl>  
> 
> 
> 
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