SetFetchMode被忽略了

我有以下标准:

session.CreateCriteria<ItemDeliveryDetail>()
       .SetFetchMode("ItemDelivery", FetchMode.Eager)
       .Add(Restrictions.Eq("Id", 21932250))
       .List<ItemDeliveryDetail>();

这会导致以下查询:

SELECT this_.itemdeliverydetail_id AS itemdeli1_4_0_,
       this_.itemdelivery_id       AS itemdeli2_4_0_,
       this_.partitiondate         AS partitio3_4_0_,
       this_.amount                AS amount4_0_,
       this_.processed_by_rem      AS processed5_4_0_,
       this_.single_item_price     AS single6_4_0_,
       this_.bookingaccount_id     AS bookinga7_4_0_,
       this_.supplierinvoice_id    AS supplier8_4_0_
FROM   itemdeliverydetail this_
WHERE  this_.itemdeliverydetail_id = :p0;

正如您所看到的，没有我所期望的到ITEMDELIVERY的连接的迹象。

如何修复?

ItemDelivery的映射如下:

mapping.CompositeId().KeyProperty(x => x.Id, "ITEMDELIVERY_ID")
                     .KeyProperty(x => x.DeliveryDate, "DELIVERY_DATE");
mapping.HasMany(x => x.ItemDeliveryDetails)
       .KeyColumns.Add("ITEMDELIVERY_ID", "PARTITIONDATE");

ItemDeliveryDetail的映射如下:

mapping.CompositeId().KeyProperty(x => x.Id, "ITEMDELIVERYDETAIL_ID")
                     .KeyReference(x => x.ItemDelivery, "ITEMDELIVERY_ID",
                                                        "PARTITIONDATE");