护理应用中Drools规则的解释
我在理解Drools规则时遇到了一些问题，这些规则是在OptaPlanner演示示例之一（Nurservestering应用程序）中实现的。有人能解释一下下面的规则是如何工作的吗护理应用中Drools规则的解释,drools,rules,optaplanner,Drools,Rules,Optaplanner,我在理解Drools规则时遇到了一些问题，这些规则是在OptaPlanner演示示例之一（Nurservestering应用程序）中实现的。有人能解释一下下面的规则是如何工作的吗 // a nurse can only work one shift per day, i.e. no two shift can be assigned to the same nurse on a day. rule "oneShiftPerDay" when $leftAssignment : Shift
// a nurse can only work one shift per day, i.e. no two shift can be assigned to the same nurse on a day.
rule "oneShiftPerDay"
when
$leftAssignment : ShiftAssignment($leftId : id, $employee : employee, $shiftDate : shiftDate)
$rightAssignment : ShiftAssignment(employee == $employee, shiftDate == $shiftDate, id > $leftId)
then
insertLogical(new IntConstraintOccurrence("oneShiftPerDay", ConstraintType.NEGATIVE_HARD,
1,
$leftAssignment, $rightAssignment));
end
when
// When a specific shift with id $leftId is assigned to employee $employee and that shift is on date $shiftDate
$leftAssignment : ShiftAssignment($leftId : id, $employee : employee, $shiftDate : shiftDate)
// AND there is another shift assigned to the same for the same date and with a higher id
$rightAssignment : ShiftAssignment(employee == $employee, shiftDate == $shiftDate, id > $leftId)
then
// Then this solution is penalized: it gets -1 hard score point
scoreHolder.addHardConstraintMatch(kcontext, -1);
关于
id<$leftId