NHibernate QueryOver带有子查询和别名

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() .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() .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)