Hello! I am writing a program which sums over the a field of every entry in a table. My failure happens right here:
Code:
...
long cents = session.createCriteria(Payment.class)
.<Long>setProjection(Projections.sum("totalAmountCents")).uniqueResult();
...
However, when there are no Payments stored this throws a Null Pointer Exception. What is the best way to handle this? I don't really want to catch a NPE, but I also want to be able to handle no payments (I want it to return 0 in that case)
What is the best way to handle this?
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