func DeletePromotion(p promotion.IPromotion) error {
var err error
var rep promotion.IPromotionRep = nil
if p.Type() == promotion.TypeFlagCashBack {
v := p.(*CashBackPromotion)
rep = v._promRep
err = rep.DeleteValueCashBack(v.GetAggregateRootId())
} else if p.Type() == promotion.TypeFlagCoupon {
v := p.(*Coupon)
rep = v._promRep
err = rep.DeleteValueCoupon(v.GetAggregateRootId())
}
if err == nil && rep != nil {
err = rep.DeletePromotion(p.GetAggregateRootId())
}
return err
}
