[kepler-users] nil vs. null

[Corinna Gries]

Hi,

I am trying to run some simple range checks on sensor data coming from a 
DataTurbine actor. I.e. filtering out those -99999 values and replacing 
them with NULL. I have managed to replace them with nil and that works 
well for graphing the data in Kepler, but I can't insert the data into a 
database. The RecordAssembler seems to take 'nil' as a string. The 
expression s.equals(nil)?null:s works in the expression evaluator (i.e. 
returning object(null) when true) but returns always false when I put it 
into an expression actor.

What am I missing here? The workflow is attached, although it won't work 
because I have the DT instance running on my localhost.

thanks
Corinna
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