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複合ID我已經越過張貼這在谷歌FNH組，但這裏的獨家新聞：流利NHibernate和單列名
我有一個表具有複合ID舊的數據庫。那麼， PK是隱含的，因爲表實際上並沒有一個PK定義，但 自然PK是WORKORDERID和ImagePath的組合 列：
CREATE TABLE [WORKORDERIMG](
[WORKORDERID] [varchar](50) NULL,
[IMAGEPATH] [varchar](250) NULL,
[WOTASKID] [numeric](10, 0) NULL,
[ATTACHEDBY] [nvarchar](100) NULL,
[COMMENTS] [nvarchar](256) NULL,
[DATETIMEATTACHED] [datetime] NULL
) ON [PRIMARY]
我都此類地圖定義：
/// <summary>
/// NHibernate mapping for workorder attachments
/// </summary>
public class AttachmentMap : ClassMap<Attachment>
{
public AttachmentMap()
{
SchemaIs(Resources.DatabaseSchema);
WithTable(ObjectNames.TableWorkorderAttachment);
UseCompositeId()
.WithKeyProperty(x => x.ParentId, "WORKORDERID")
.WithKeyProperty(x => x.FileLocation, "IMAGEPATH");
Map(x => x.AttachedByUser, "ATTACHEDBY").WithLengthOf(100).Nullable();
Map(x => x.AttachedOn, "DATETIMEATTACHED").Nullable();
Map(x => x.Comments).Nullable().WithLengthOf(256);
References(x => x.ParentWorkorder).FetchType.Join();
}
}
對於這個類：
public class Attachment
{
public virtual string ParentId { get; set; }
public virtual string FileLocation { get; set; }
public virtual Workorder ParentWorkorder { get; set; }
public virtual string AttachedByUser { get; set; }
public virtual string Comments { get; set; }
public virtual DateTime? AttachedOn { get; set; }
public override bool Equals(object obj)
{
return this.IsEqual(obj);
}
public override int GetHashCode()
{
return HashCodeGenerator.GenerateHashCode(new object[] { FileLocation, ParentId });
}
}
現在我知道我應該定義在t時的WORKORDERID列他也爲參考文件行提供 classmap。有了它排除我得到 預期的錯誤：
NHibernate: INSERT INTO azteca.WorkOrderImg (ATTACHEDBY,
DATETIMEATTACHED, Comments, ParentWorkorder_id, WORKORDERID,
IMAGEPATH) VALUES (@p0, @p1, @p2, @p3, @p4, @p5);@p0 = 'SYSTEM', @p1 = 3/15/2009 12:00:00 AM, @p2 = 'Some comment', @p3 = NULL, @p4 = NULL, @p5 = 'some ile\location'
System.Data.SqlClient.SqlException: Invalid column name 'ParentWorkorder_id'.
然而，當我把它給我弄功能NHibernate試圖將 WORKORDERID列添加到查詢兩次：
System.IndexOutOfRangeException: Invalid index 5 for this SqlParameterCollection with Count=5.
我一直嘗試我想不出的每一種組合。我 測試的映射與此代碼：
[Test]
public void Can_persist_an_attachment()
{
var sf = ObjectFactory.GetNamedInstance<ISessionFactory> (ObjectMother.Datasource);
using (ISession session = sf.OpenSession())
{
new PersistenceSpecification<Attachment>(session)
.CheckProperty(x => x.AttachedByUser, "SYSTEM")
.CheckProperty(x => x.AttachedOn, new DateTime(2009, 3, 15))
.CheckProperty(x => x.Comments, "Some comment")
.CheckProperty(x => x.FileLocation, "some\file\\location")
.VerifyTheMappings();
}
}
讚賞任何幫助。