[Pellet-users] addInverseProperty() exception

[Evren Sirin]

Can you provide a complete example that shows the problem? Looking at 
the info provided all I can guess is one of the properties is declared 
as a datatype propertyso it cannot have an inverse causing the problem.

Cheers,
Evren

On 4/3/08 9:57 AM, Tiziano Furlan wrote:
> Hi,
>
> I'm receiving a NullPointerException when using the KnowledgeBase method 
> addInverseProperty(p1, p2) on RBox.java at line 292.
>
> Both the properties I'm passing to the addInverseProperty() exists, but 
> it seems that the roleS.getInverse() method on RBox.java returns null.
>
> I'm using the 1.5.1 release.
>
> Any idea on how to solve this problem?
>
> Thanks
>
> Tiziano
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