[Mulgara-general] Unable to load a Krule file into Mulgara

[Paul Gearon]

We probably are in different environments, as I use the latest SVN  
checkout, and I'm guessing that you are in the latest "released"  
code.  The trunk from SVN is actually a better option, as it MUST pass  
all tests to be checked in, and it has numerous bug fixes and a couple  
of features beyond the latest release.  So I'd recommend updating to  
that if you can.

That said, there had not been any changes in the rules code for some  
time, so this should have been identical.  Yesterday I checked in a  
couple of changes - to accept some empty arguments without giving null  
pointer exceptions, and to give some more meaningful messages on  
errors, but that is it. Other than that, the code I've been running  
should be identical to yours. I even unwound my changes to confirm  
that removing the empty <argument> was making it get past the null  
pointer exception.

So, can I please confirm the following:
1.  Are you sure that the file you updated is the same one that you  
are loading?
2.  Are you dropping the graph that contains the rules before you load  
the updated rules? There will be no warnings if you add updated rules  
to an existing set of rules.  Because of the use of blank nodes, the  
old rule data will not be over written - you will end up with a second  
set of data.

Regards,
Paul

On Mar 26, 2008, at 12:57 PM, Ghazzaoui, Ramez (NIH/NLM/LHC) [C] wrote:
> Thank you for all this. I am sort of at a loss regarding the  
> NullPointer Exception now. I’ve cleaned up the file, removed the  
> empty argument and added a trigger to the rule itself, yet I still  
> get the same error. Clearly you and I are working in different  
> environments. I don’t know how we can move forward productively now…
>
> Cheers,
>
> -Ramez
>

(I've cut the rest of this message, as it is redundant, and it  
exceeded the 40kB limit that we apparently have on emails now).
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