The parameters for MaxWorkingWeekendsInFourWeeks is in some of the
input files for the NurseRostering example, but it doesn't seem to be
the rules(drl) file.
Is it implemented elsewhere? I've tried doing is like this, but it
doesn't work as a HARD constraint. I'm running it as SOFT now, but it
would nice to compare it to a better version.
//Rules for workingweekends
rule "insertWorkingWeekends"
when
MinMaxContractLine(contractLineType ==
ContractLineType.TOTAL_WORKING_WEEKENDS_IN_FOUR_WEEKS, enabled ==
true,
$contract : contract)
$employee : Employee(contract == $contract)
ShiftAssignment(employee == $employee, $shiftDateDayIndex :
shiftDate.dayIndex, weekend == true)
then
insertLogical(new WorkingWeekend($employee, $shiftDateDayIndex/7));
end
// Maximum working weekends in four weeks
rule "insertWorkingWeekendsInFourWeeks"
// salience 1 // Do these rules first (optional, for performance)
when
MinMaxContractLine(contractLineType ==
ContractLineType.TOTAL_WORKING_WEEKENDS_IN_FOUR_WEEKS, enabled ==
true,
$contract : contract)
$employee : Employee(contract == $contract)
WorkingWeekend(employee == $employee, $week: week)
$workingWeekendTotal : Number() from accumulate(
$workingWeekend : WorkingWeekend(employee == $employee,
week >= $week, week-$week < 3 ),
count($workingWeekend)
)
then
insertLogical(new WorkingWeekendTotalFourWeeks($employee,
$workingWeekendTotal.intValue(), $week));
end
// Maximum working weekends in four weeks
rule "maxWorkingWeekendsInFourWeeks"
when
$contractLine : MinMaxContractLine(
contractLineType ==
ContractLineType.TOTAL_WORKING_WEEKENDS_IN_FOUR_WEEKS, maximumEnabled
== true,
$contract : contract, $maximumValue : maximumValue
)
$employee : Employee(contract == $contract)
WorkingWeekendTotalFourWeeks(employeeContract == $contract,
total > $maximumValue,
employee==$employee, $total : total, $week : week)
then
insertLogical(new
IntConstraintOccurrence("maxWorkingWeekendsInFourWeeks",
ConstraintType.NEGATIVE_SOFT,
($total - $maximumValue) * $contractLine.getMaximumWeight(),
$employee, $week));
end
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