NHibernate QueryOver帶有子查詢和別名

Question

我正在努力將以下（簡化）HQL轉換為QueryOver：

select subscription
from Subscription as subscription
where not exists (
    from Shipment as shipment
    where shipment.Subscription = subscription
    and (shipment.DeliveryDate  = :deliveryDate)
)

我走到這一步：

Subscription subscription = null;

Session.QueryOver(() => subscription)
    .Where(Subqueries.NotExists(QueryOver.Of<Shipment>()
        .Where(shipment => shipment.Subscription == subscription)
        .And(shipment=> shipment.DeliveryDate == deliveryDate)
        .Select(shipment => shipment.Id).DetachedCriteria));
    .TransformUsing(new DistinctRootEntityResultTransformer());

問題是上面的Subqueries和Where語句給了我以下（無效）where子句：

where shipment.SubscriptionId is null

當我想要的是：

where shipment.SubscriptionId = subscription.Id

因此，在構造SQL時不考慮別名及其行級值，而是將其初始值null用於與Shipment的SubscriptionId進行比較。

更新

使用dotjoe提供的解決方案，我能夠編寫QueryOver語句，如下所示：

Subscription subscription = null;

Session.QueryOver(() => subscription)
    .WithSubquery.WhereNotExists(QueryOver.Of<Shipment>()
        .Where(shipment => shipment.Subscription.Id == subscription.Id)
        .And(shipment => shipment.DeliveryDate == deliveryDate)
        .Select(shipment => shipment.Id));

Answer 1

嘗試

.Where(shipment => shipment.Subscription.Id == subscription.Id)