1
我注意到在我的數據庫（SQL Server）中，我用於版本控制的列在實體添加到相關表時已更新爲實體。nhibernate 3.0樂觀鎖和相關實體
因此，舉例來說，如果我有一個Person實體，我添加了一個Person到Club，將Person的數據庫中的記錄將有一個新的版本。當然，在數據庫中，這是Club的記錄，它是使用Person的主鍵添加/更新的。
我對這種行爲感到有點驚訝，因爲Person實體沒有其他數據正在改變。
我的問題是，如果有一種方法可以關閉它;也就是說，只有當該行中的數據更改時才更新版本列。這種配置的含義是什麼？
編輯這裏是真正的代碼
型號
public partial class ObligationProgramFund : IMyObject
{
private System.Int32 _id;
// ... many other properties
private IList<ObligationProgramFundOrganization> _obligationPFOrganizations;
private System.Byte[] _recordVersion;
public ObligationProgramFund() : base()
{
_obligationPFOrganizations = new List<ObligationProgramFundOrganization>();
}
public virtual System.Int32 Id
{
get { return _id; }
set { _id = value; }
}
public virtual IList<ObligationProgramFundOrganization> ObligationPFOrganizations
{
get { return _obligationPFOrganizations; }
set { _obligationPFOrganizations = value; }
}
public virtual System.Byte[] RecordVersion
{
get { return _recordVersion; }
set { _recordVersion = value; }
}
}
public partial class ObligationProgramFundOrganization : IMyObject
{
private ObligationProgramFund _obligationProgramFund;
private System.Int32 _id;
private Organization _organization;
private System.Byte[] _recordVersion;
// .. other properties
public ObligationProgramFundOrganization() : base()
{
}
public virtual System.Int32 Id
{
get { return _id; }
set { _id = value; }
}
public virtual System.Byte[] RecordVersion
{
get { return _recordVersion; }
set { _recordVersion = value; }
}
public virtual ObligationProgramFund ObligationProgramFund
{
get { return _obligationProgramFund; }
set { _obligationProgramFund = value; }
}
public virtual Organization Organization
{
get { return _organization; }
set { _organization = value; }
}
}
public partial class Organization : IMyObject
{
private IList<ObligationProgramFundOrganization> _obligationPFOrganizations;
private System.Int32 _id;
private System.Byte[] _recordVersion;
// other properties
public Organization() : base()
{
_obligationPFOrganizations = new List<ObligationProgramFundOrganization>();
}
public virtual System.Int32 Id
{
get { return _id; }
set { _id = value; }
}
public virtual System.Byte[] RecordVersion
{
get { return _recordVersion; }
set { _recordVersion = value; }
}
public virtual IList<ObligationProgramFundOrganization> ObligationPFOrganizations
{
get { return _obligationPFOrganizations; }
set { _obligationPFOrganizations = value; }
}
}
映射
public partial class ObligationProgramFundMap : ClassMap<ObligationProgramFund>
{
public ObligationProgramFundMap()
{
Table("[MySchema2].[dbo].[ObligationProgramFund]");
OptimisticLock.Version();
DynamicUpdate();
LazyLoad();
Id(x=>x.Id)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[Id]")
.GeneratedBy.Identity();
Version(x=>x.RecordVersion)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[RecordVersion]")
.CustomSqlType("timestamp")
.Not.Nullable()
.UnsavedValue("null")
.CustomType("BinaryBlob")
.Generated.Always();
// other properties/components
HasMany(x=>x.ObligationPFOrganizations)
.Access.CamelCaseField(Prefix.Underscore)
.Cascade.AllDeleteOrphan()
.Fetch.Select()
.Inverse()
.LazyLoad()
.KeyColumns.Add("ObligationProgramFundId");
}
}
public partial class ObligationProgramFundOrganizationMap : ClassMap<ObligationProgramFundOrganization>
{
public ObligationProgramFundOrganizationMap()
{
Table("[MySchema2].[dbo].[ObligationProgramFundOrganization]");
OptimisticLock.Version();
DynamicUpdate();
LazyLoad();
Id(x=>x.Id)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[Id]")
.GeneratedBy.Identity();
Version(x=>x.RecordVersion)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[RecordVersion]")
.CustomSqlType("timestamp")
.Not.Nullable()
.UnsavedValue("null")
.CustomType("BinaryBlob")
.Generated.Always();
// other properties
References(x=>x.ObligationProgramFund)
.Access.CamelCaseField(Prefix.Underscore)
.Cascade.SaveUpdate()
.Fetch.Select()
.Columns("ObligationProgramFundId");
References(x=>x.Organization)
.Access.CamelCaseField(Prefix.Underscore)
.Cascade.SaveUpdate()
.Fetch.Select()
.Columns("OrganizationId");
}
}
public partial class OrganizationMap : ClassMap<Organization>
{
public OrganizationMap()
{
Table("[MySchema2].[dbo].[Organization]");
OptimisticLock.Version();
DynamicUpdate();
LazyLoad();
Id(x=>x.Id)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[Id]")
.GeneratedBy.Identity();
Version(x=>x.RecordVersion)
.Access.CamelCaseField(Prefix.Underscore)
.Column("[RecordVersion]")
.CustomSqlType("timestamp")
.Not.Nullable()
.UnsavedValue("null")
.CustomType("BinaryBlob")
.Generated.Always();
// other properties
HasMany(x=>x.ObligationPFOrganizations)
.Access.CamelCaseField(Prefix.Underscore)
.Cascade.AllDeleteOrphan()
.Fetch.Select()
.Inverse()
.LazyLoad()
.KeyColumns.Add("OrganizationId");
}
}
所以我的實體
Organization 1 - ∞ ObligationProgramFundOrganization ∞ - 1 ObligationProgramFund
我觀察到的問題是，當創建新的ObligationProgramFundOrganization（關聯表）時，ObligationProgramFund的記錄版本會更新。
實際的senario是我在ObligationProgramFund編輯表單上有一個ObligationProgramFundOrganizations表。 ObligationProgramFundOrganization通過AJAX調用添加。當我去保存ObligationProgramFund時，我得到一個併發異常。我確定沒有其他用戶實際上編輯了ObligationProgramFund，因爲它都在本地運行。
看起來很奇怪。俱樂部只能有一個人嗎？這將是添加一個人更新俱樂部記錄的唯一方法。你可以發佈你的類和映射嗎？ – 2011-06-05 02:13:12
@Diego用真實的代碼更新了我的問題。 – 2011-06-05 18:03:52