gistfile1.txt

This rule:


// Identical shiftTypes during a weekend
rule "identicalShiftTypesDuringWeekend"
    when
        $contractLine : BooleanContractLine(contractLineType == ContractLineType.IDENTICAL_SHIFT_TYPES_DURING_WEEKEND,
            enabled == true, $contract : contract)
        $employee : Employee(contract == $contract, $weekendLength : weekendLength)
        ShiftDate(dayOfWeek == DayOfWeek.SUNDAY, $sundayIndex : dayIndex)
        $shiftType : ShiftType()
        accumulate(
            $assignment : ShiftAssignment(
                weekend == true,
                weekendSundayIndex == $sundayIndex,
                employee == $employee,
                shiftType == $shiftType);
            $weekendAssignmentTotal : count($assignment);
            $weekendAssignmentTotal > 0 and $weekendAssignmentTotal < $weekendLength
        )
    then
        scoreHolder.addSoftConstraintMatch(kcontext,
                ($weekendAssignmentTotal.intValue() - $weekendLength) * $contractLine.getWeight());
end


throws

java.lang.IllegalStateException: There are errors in a score DRL:
Error Messages:
Message [id=1, level=ERROR, path=org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl, line=452, column=0
   text=[ERR 102] Line 452:40 mismatched input 'and' in rule "identicalShiftTypesDuringWeekend"]
Message [id=2, level=ERROR, path=org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl, line=0, column=0
   text=Parser returned a null Package]
---


More specfically, this line:
        $weekendAssignmentTotal : Long(this > 0 && < $weekendLength) from accumulate(
            ...,
            count($assignment)
        )
has become
        accumulate(
            ...;
            $weekendAssignmentTotal : count($assignment);
            $weekendAssignmentTotal > 0 and $weekendAssignmentTotal < $weekendLength
        )