optaplanner - Why doesn't construction heuristic work when planning variable is nullable -


i’m trying make schedule cashiers using optaplanner 5.5.0. planning entity same @ nurserostering example(shiftassignment), planning variable (employee) nullable (there can unassigned shifts). ts works perfectly, construction heuristic(first fit) nothing (because in case solution nulls feasible, suppose). should make construction heuristic working?

up @ least 6.0.0.beta2, construction heuristics don't support @planningvariable(nullable=true) (which new since 6.0.0.beta1) yet.

i working on refactoring construction heuristics based on selector architecture , placer stuff. yield many benefits ch, including nullable=true support.


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