internal bool TryFitReservation(int start, int end, out ReservationEvaluationParameter evaluationParameter)
{
evaluationParameter = null;
ReservationLimit startLimit = new ReservationLimit(start, ReservationLimit.LimitType.Start);
ReservationLimit endLimit = new ReservationLimit(end, ReservationLimit.LimitType.End);
int nextStartIndex = limits.FindNextLimitIndex(startLimit);
if (nextStartIndex < 0)
{
// This room is already reserved on the start date.
return(false);
}
int nextEndIndex = limits.FindNextLimitIndex(endLimit);
if (nextEndIndex < 0)
{
// This room is already reserved on the end date.
return(false);
}
if (nextStartIndex != nextEndIndex)
{
// This room is reserved somewhere between start and end date.
return(false);
}
ReservationLimit limitAfterEnd = limits.GetLimit(nextEndIndex);
if (limitAfterEnd?.Type == ReservationLimit.LimitType.End)
{
// This reservation is within the other one.
return(false);
}
// Since limitAfterEnd is Start limit, we know that limitBeforeStart is End limit (or StartEnd).
ReservationLimit limitBeforeStart = limits.GetLimit(nextStartIndex - 1);
int startAfterEnd = limitAfterEnd != null ? limitAfterEnd.Date : ReservationsManager.NUMBER_OF_DAYS;
int endBeforeStart = limitBeforeStart != null ? limitBeforeStart.Date : -1;
int gapBeforeStart = start - endBeforeStart - 1;
int gapAfterEnd = startAfterEnd - end - 1;
evaluationParameter = new ReservationEvaluationParameter(gapBeforeStart, gapAfterEnd);
return(true);
}
protected override int CalculateFitness(ReservationEvaluationParameter evaluationParameter)
{
return(-evaluationParameter.GapBeforeStart - evaluationParameter.GapAfterEnd);
}
