插入HQL類型的命名參數插入HQL插入

Question

我想執行一個HQL插入語句來插入一些參數到我映射到實體的表中。

以下是我目前的工作（這將引發異常）：

Insert Into Entity1 
(ForeignKey1, ForeignKey2, Date1, Date2) 

SELECT this_.ForeignKey1, 
     cast(:param1 as int) as ForeignKeyValue2, 
     cast(:param2 as DateTime) as DateValue1, 
     cast(:param3 as DateTime) as DateValue2 
FROM OtherEntity this_ 
WHERE ... 

如果我離開了2日期字段插入的作品，所以我知道我靠近。我只需要弄清楚如何讓nhibernate將日期視爲日期。

例外：

insertion type [NHibernate.Type.Int32Type] and selection type 
[NHibernate.Dialect.Function.CastFunction+LazyType] at position 1 are not compatible 
[Insert Into Entity1 
(ForeignKey1, ForeignKey2, Date1, Date2) 

SELECT this_.ForeignKey1, 
     cast(:param1 as int) as ForeignKeyValue2, 
     cast(:param2 as DateTime) as DateValue1, 
     cast(:param3 as DateTime) as DateValue2 
FROM OtherEntity this_ 
WHERE ... 

如果任何人有做這樣的事情請隨時瀏覽體驗。此外，如果您知道如何使用HQL在日期時間上施放，也會有所幫助。 DBMS是MS SQL 2008 .:

Answer 1

您絕不應該需要進行強制轉換，只需將參數設置爲正確的類型即可。

var hql = "insert into Entity1 (fkid, mydate) 
    select fkid, :date from OtherEntity"; 

session.CreateQuery(hql) 
    .setDateTime("date", DateTime.Now) 
    .ExecuteUpdate();