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"select new Constructor" in HQL

nimo frey
Ranch Hand

Joined: Jun 28, 2008
Posts: 580
I have a strange failure:

I have a constructor with fullfills this:



(intValueA, intValueB are Integers)

this works.

This works, too:



But when I use the sum-aggregation:



this failure occurs:



My Constructor:




Why does my Constructor not work, when I use the SUM-Aggregation???
nimo frey
Ranch Hand

Joined: Jun 28, 2008
Posts: 580
Okay, solved.

The datatypes were wrong. I have used Integer instead of Long.
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: "select new Constructor" in HQL