private void validateSupervisorReferenceCycle(
long id,
long?supervisorId,
IList <Employee> supervisors//Chain
)
{
if (supervisorId == null)
{
return;
}
var supervisor = employeeRepository.FindByIds(new List <long> {
supervisorId ?? 0
}).FirstOrDefault();
if (supervisor == null)
{
throw BusinessException.IllegalSupervisorId(supervisorId ?? 0);
}
supervisors.Add(supervisor);
if (id == supervisorId)
{
IList <Employee> cycle = new List <Employee>(supervisors);
cycle.Insert(0, supervisors[supervisors.Count - 1]);
throw BusinessException.SupervisorCycle(id, cycle);
}
validateSupervisorReferenceCycle(id, supervisor.SupervisorId, supervisors);
}