TransactionException:未连接事务,或线路被断开] NHibernate.Transaction.AdoTransaction.CheckNotZombied()108
NHibernate.Transaction.AdoTransaction.Rollback()144功能NHibernate枚举与映射复合键 - CheckNotZombied
同时使用NHibernate通过以下方式进行查询,而我得到上述错误:
public IEnumerable<Service> GetAllServicesByOrgType(OrganisationType orgType)
{
return NHibernateSession
.CreateCriteria<ServiceOrganisationType>()
.Add(Restrictions.Eq("OrganisationType", orgType))
.List<ServiceOrganisationType>()
.Select(x=>x.Service);
}
下面是我的数据库结构和FluentNHibernate映射和模型:
数据库结构
Service:
- Id(PK)
- Name (nvarchar)
ServiceOrganisationType (composite PK on OrganisationTypeId and ServiceId):
- OrganisationTypeId (PK)
- ServiceId (PK)
- LastUpdated
- LastUpdatedById
OrganisationType:
- Id (PK)
- OrganisationType (nvarchar)
ServiceOrganisationTypeMap:
public class ServiceOrganisationTypeMap : ClassMap<ServiceOrganisationType>
{
public ServiceOrganisationTypeMap()
{
CompositeId()
.KeyReference(x => x.Service, "ServiceId")
.KeyProperty(x => x.OrganisationType, "OrganisationTypeId");
References(x => x.LastUpdatedBy);
Map(x => x.LastUpdated);
}
}
ServiceMap:
public class ServiceMap : ClassMap<Service>
{
/// <summary>
/// Initializes a new instance of the ServiceMap class.
/// </summary>
public ServiceMap()
{
Id(x => x.Id).GeneratedBy.Identity();
Map(x => x.Name);
HasMany(x => x.ServiceOrganisationTypes)
.KeyColumn("ServiceId")
.Inverse()
.Cascade
.AllDeleteOrphan();
// Other mappings...
}
}
OrganisationType是一个枚举:
public enum OrganisationType : long
{
FirstOrgTypeExample = 1,
SecondOrgTypeExample = 10,
ThirdOrgTypeExample = 30
}
服务模型类:
[Serializable]
public class Service : DomainObject
{
// Other model properties...
public virtual IList<ServiceOrganisationType> ServiceOrganisationTypes { get; set; }
}
ServiceOrganisationType模型类:
[Serializable]
public class ServiceOrganisationType : AuditedObject
{
[NotNull]
public virtual OrganisationType OrganisationType { get; set; }
[NotNull]
public virtual Service Service { get; set; }
public override bool Equals(object obj)
{
if (obj == null)
return false;
var t = obj as ServiceOrganisationType;
if (t == null)
return false;
if (OrganisationType == t.OrganisationType && Service == t.Service)
return true;
return false;
}
public override int GetHashCode()
{
return (OrganisationType + "|" + Service.Id).GetHashCode();
}
}
对于枚举,我还使用这个职位的答案中所描述的EnumConvention类:Enum to integer mapping causing updates on every flush。所以我的接受方法有以下内容:
public void Accept(IAcceptanceCriteria<IPropertyInspector> criteria)
{
criteria.Expect(
// ... Other arguments ||
// We want all instance of OrganisationType to map to long
x.Property.PropertyType == typeof(OrganisationType)
);
}
我猜测CheckNotZombied是别的症状。当我检查NHProf它显示了一个SQL错误 - “System.Data.SqlClient.SqlException:错误转换数据类型为nvarchar为bigint” - 这NHib生成以下SQL而查询表ServiceOrganisationType:
SELECT this_.ServiceId as ServiceId63_0_,
this_.OrganisationTypeId as Organisa2_63_0_,
this_.LastUpdated as LastUpda3_63_0_,
this_.LastUpdatedById as LastUpda4_63_0_
FROM MyDb.dbo.[ServiceOrganisationType] this_
WHERE this_.OrganisationTypeId = 'FirstOrgTypeExample' /* @p0 */
在WHERE子句使用枚举的字符串值('FirstOrgTypeExample')而不是long值。我已经试过了标准查询期间铸造OrganisationType到一个长期的,但随后的映射抛出异常说:
NHibernate.QueryException:类型不匹配在 NHibernate.Criterion.SimpleExpression:OrganisationType预计类型 myProduct的。 MyProject.Core.OrganisationType,实际类型System.Int64
任何人都可以帮助我解决问题:如何让NHibernate在生成的sql中使用枚举值?
谢谢
OrganisationTypeId列不可为空,所以我猜这不适用 – Robbie 2012-02-13 00:57:21