public override void Execute()
{
Employee e = database.GetEmployee(empId);
if (e != null)
{
HourlyClassification hc = e.Classification as HourlyClassification;
if (hc != null)
{
hc.AddTimeCard(new TimeCard(date, hours));
}
else
{
throw new InvalidOperationException(
"Tried to add timecard to non-hourly employee");
}
}
else
{
throw new InvalidOperationException("No such employee.");
}
}