NHibernate QueryOver带有子查询和别名

Question

我正在努力将以下（简化）HQL转换为QueryOver：

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

我走到这一步：

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());

问题是上面的Subqueries和Where语句给了我以下（无效）where子句：

where shipment.SubscriptionId is null

当我想要的是：

where shipment.SubscriptionId = subscription.Id

因此，在构造SQL时不考虑别名及其行级值，而是将其初始值null用于与Shipment的SubscriptionId进行比较。

更新

使用dotjoe提供的解决方案，我能够编写QueryOver语句，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

尝试

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