Question

使用嵌套集合查看我的对象不会抛出错误，但在尝试保存时，我发现了错误

    [IndexOutOfRangeException: Invalid index 15 for SqlParameterCollection with Count=15.]
   System.Data.SqlClient.SqlParameterCollection.RangeCheck(Int32 index) +5343807
   System.Data.SqlClient.SqlParameterCollection.GetParameter(Int32 index) +19
   System.Data.Common.DbParameterCollection.System.Collections.IList.get_Item(Int32 index) +10
   NHibernate.Type.Int64Type.Set(IDbCommand rs, Object value, Int32 index) +60
   NHibernate.Type.NullableType.NullSafeSet(IDbCommand cmd, Object value, Int32 index) +414
   NHibernate.Type.NullableType.NullSafeSet(IDbCommand st, Object value, Int32 index, Boolean[] settable, ISessionImplementor session) +62
   NHibernate.Type.ManyToOneType.NullSafeSet(IDbCommand st, Object value, Int32 index, Boolean[] settable, ISessionImplementor session) +122
   NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate(Object id, Object[] fields, Object rowId, Boolean[] includeProperty, Boolean[][] includeColumns, Int32 table, IDbCommand statement, ISessionImplementor session, Int32 index) +344

[PropertyValueException: Error dehydrating property value for PravUprav.Classes.Entities.ClaimCaseInstanceFI.Decision]
   NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate(Object id, Object[] fields, Object rowId, Boolean[] includeProperty, Boolean[][] includeColumns, Int32 table, IDbCommand statement, ISessionImplementor session, Int32 index) +503
   NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id, Object[] fields, Object[] oldFields, Object rowId, Boolean[] includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql, ISessionImplementor session) +2013
   NHibernate.Persister.Entity.AbstractEntityPersister.UpdateOrInsert(Object id, Object[] fields, Object[] oldFields, Object rowId, Boolean[] includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql, ISessionImplementor session) +335
   NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id, Object[] fields, Int32[] dirtyFields, Boolean hasDirtyCollection, Object[] oldFields, Object oldVersion, Object obj, Object rowId, ISessionImplementor session) +1898
   NHibernate.Action.EntityUpdateAction.Execute() +737
   NHibernate.Engine.ActionQueue.Execute(IExecutable executable) +39
   NHibernate.Engine.ActionQueue.ExecuteActions(IList list) +128
   NHibernate.Engine.ActionQueue.ExecuteActions() +48
   NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource session) +241
   NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent event) +179
   NHibernate.Impl.SessionImpl.Flush() +295
   NHibernate.Transaction.AdoTransaction.Commit() +189
   Spring.Data.NHibernate.HibernateTransactionManager.DoCommit(DefaultTransactionStatus status) in c:\_prj\spring-net\src\Spring\Spring.Data.NHibernate\Data\NHibernate\HibernateTransactionManager.cs:561

[DataIntegrityViolationException: Error dehydrating property value for PravUprav.Classes.Entities.ClaimCaseInstanceFI.Decision]
   Spring.Data.NHibernate.HibernateTransactionManager.DoCommit(DefaultTransactionStatus status) in c:\_prj\spring-net\src\Spring\Spring.Data.NHibernate\Data\NHibernate\HibernateTransactionManager.cs:577

错误：

Error dehydrating property value for

说我映射了属性两次或者实体属性的DataTypes不正确，但我检查了并且在我的代码中找不到错误。

收集实体：

public class ClaimCase
{
    private IList<ClaimCaseInstance> _claimCaseInstances;
    public virtual IList<ClaimCaseInstance> ClaimCaseInstances
    {
       get { return _claimCaseInstances ?? (_claimCaseInstances = new List<ClaimCaseInstance>()); }
          set { _claimCaseInstances = value; }
     }
}

实体映射：

public sealed class ClaimCaseMap : ClassMap<ClaimCase>
{
   public ClaimCaseMap()
      {
         Table("ClaimCase");
         Id(x => x.Id);                
         HasMany(x => x.ClaimCaseInstances).Inverse().Cascade.AllDeleteOrphan();
       }
 }

ClaimCaseInstance实体：

public abstract class ClaimCaseInstance
{
    public virtual ClaimCase ClaimCase { get; set; }
    public virtual DicList Result { get; set; }
}

儿童班：

public class ClaimCaseInstanceFI : ClaimCaseInstance
{
    public virtual DicList Decision { get; set; }
}

public class ClaimCaseInstanceAI : ClaimCaseInstance
{
}

映射：

public sealed class ClaimCaseInstanceMap : ClassMap<ClaimCaseInstance>
{
    public ClaimCaseInstanceMap()
    {
        Table("ClaimCaseInstances");
        Id(x => x.Id);            
        DiscriminateSubClassesOnColumn("InstanceType");

        References(x => x.ClaimCase);
        References(x => x.Result);
    }
}

public sealed class ClaimCaseInstanceFIMap : SubclassMap<ClaimCaseInstanceFI>
{
    public ClaimCaseInstanceFIMap()
    {
        DiscriminatorValue((int)CourtTypes.Firts);
        References(x => x.Decision);
    }
}

public sealed class ClaimCaseInstanceAIMap : SubclassMap<ClaimCaseInstanceAI>
{
    public ClaimCaseInstanceAIMap()
    {
        DiscriminatorValue((int)CourtTypes.Appeals);
    }
}

CourtTypes：

public enum CourtTypes
{
    First = 5,
    Appeals = 6
}

按惯例DicList

ForeignKeyConversion引用映射为instance.Property.Name + "ID"，并且工作正常。

在编辑字段ClaimCase

后保存Decision时才会出现错误

Answer 1

我已经确定了问题的根源。使用优秀工具dotPeek（感谢@SergSW获取提示）为symbol server和debug

NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate()

我发现sql语句中更新字段的数量不等于计数

entityMetamodel.PropertySpan

数组entityMetamodel.Properties中的某些字段存在两次。

public sealed class ClaimCaseInstanceMap : ClassMap<ClaimCaseInstance>
    {
        public ClaimCaseInstanceMap()
        {
            Table("ClaimCaseInstances");

            DiscriminateSubClassesOnColumn("InstanceType");

            Id(x => x.Id);  
            References(x => x.ClaimCase);
            Map(x => x.FilingDate);
            References(x => x.Result);
            Map(x => x.PriceResult);
            Map(x => x.ExpenseResult);
            Map(x => x.Comment);
        }
    }

亚类：

public sealed class ClaimCaseInstanceFIMap : SubclassMap<ClaimCaseInstanceFI>
{
    public ClaimCaseInstanceFIMap()
    {
        DiscriminatorValue((int)CourtType.Firts);

        Id(x => x.Id);  
        Map(x => x.Price);
        Map(x => x.Expense);
        References(x => x.Decision);
        References(x => x.Determination);
        Map(x => x.DeterminationDate);
        Map(x => x.CourtDateAct);
        Map(x => x.PriceResult);
        Map(x => x.ExpenseResult);
        Map(x => x.CounterClaimDate);
        Map(x => x.Comment);
    }
}

如您所见，此属性：Comment，ExpenseResult，PriceResult。

我没有描述我问题中所有字段的映射，这是我的错误，对不起，谢谢你的帮助。

Answer 2

[IndexOutOfRangeException: Invalid index 15 for SqlParameterCollection with Count=15.]

看起来生成的SQL请求存在问题。你能否展示一下这个案例的SQL语句？

Answer 3

批处理命令：命令0：

批处理命令：

命令0：UPDATE ClaimCase SET CreatedDate = @ p0，IsHidden = @ p1，InnerNumber = @ p2，OdpNumber = @ p3，DocumentsDeliveryDate = @ p4，CourtPostDate = @ p5，IncomingClaimDate = @ p6，DisputeDescription = @ p7，LawsuitNumber = @ p8，TotalPriceResult = @ p9，Note = @ p10，CourtSector = @ p11，CaseClosed = @ p12，IsBankrupt = @ p13，BankruptDate = @ p14，CreatedBy = @ p15，CaseCategoryID = @ p16，ClaimDirection = @ p17，ForeignCuratorID = @ p18，InnerContractCuratorID = @ p19，DisputeID = @ p20，CourtID = @ p21，CourtDistrictID = @ p22，MunicipalContractID = @ p23，BelongToDepartmentID = @ p24 WHERE Id = @ p25; @ p0 = 06.05.2014 9:59:56 [Type：DateTime（0）]，@ p1 = False [Type：Boolean（0）]，@ p2 ='БИС-7/2014'[Type：String（4000）]，@ p3 ='5345345'[类型：字符串（4000）]，@ p4 = 15.05.2014 0:00:00 [类型：日期时间（0）]，@ p5 = 17.05.2014 0:00:00 [类型：日期时间（0）]，@ p6 = 08.05 .2014 0:00:00 [类型：日期时间（0）]，@ p7 ='предметспора。' [Type：String（4000）]，@ p8 ='534534'[Type：String（4000）]，@ p9 = 100,00 [Type：Decimal（0）]，@ p10 = NULL [Type：String（4000） ]，@ p11 = NULL [Type：String（4000）]，@ p12 = False [Type：Boolean（0）]，@ p13 = False [Type：Boolean（0）]，@ p14 = NULL [Type：DateTime（ 0）]，@ p15 = 7026 [类型：Int64（0）]，@ p16 = 23 [类型：Int64（0）]，@ p17 = 28 [类型：Int64（0）]，@ p18 = 7026 [类型： Int64（0）]，@ p19 = 19 [类型：Int64（0）]，@ p20 = 14 [类型：Int64（0）]，@ p21 = 35 [类型：Int64（0）]，@ p22 = 86 [类型：Int64（0）]，@ p23 = 2 [类型：Int64（0）]，@ p24 = 2027 [类型：Int64（0）]，@ p25 = 12347 [类型：Int64（0）]

接下来：

Could not synchronize database state with session

NHibernate.PropertyValueException: Error dehydrating property value for PravUprav.Classes.Entities.ClaimCaseInstanceFI.Decision ---> System.IndexOutOfRangeException: Недопустимый индекс 16 для SqlParameterCollection с Count=16.

FluentNHibernate：使用鉴别器映射子集合

3 个答案: