How to set null values in result projection to zero with QueryDSL #305
Timo suggested me to report this incidence as a bug:
I like to know how to set the null value in the projection pronostico2.nropack.sum()...
When the pronostico table is empty in DB, the value returned in pronostico.nropack.sum() is null, but i want to be zero. I tried with coalesce like this: pronostico.nropack.sum().coalesce(0)
.. but i get no answer. Instead of that, i get a Cast Exception: Cannot convert Long to Integer...
Someone has the answer?
PD: The complete query is:
Extracted from my original question in http://stackoverflow.com/questions/13319628/how-to-set-null-values-in-result-projection-to-zero-with-querydsl.
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Thanks, Timo. QueryDSL framework help me a lot for my undergraduate project, especifically the implementation of simulated annealing in Java for a package delivery software system.
Greetings from Lima, Peru.
PD: I didn't test the patch because the course has been completed, but it will be useful for future development to other people. Thanks again.