流利的NHibernate双向多对一可逆异常

我试图为同一个类/表映射父/子之间的双向多对一关系。下面是映射:

References(x => x.Parent).Column("ParentID");
HasMany(x => x.Children).KeyColumn("ParentID").Inverse().Cascade.All();

当我尝试用子列表保存父节点时，我得到以下错误

系统。InvalidCastException: Object必须实现IConvertible.

如果父/子是两个不同的类/表，则上面的映射有效。我还尝试通过删除:

来使映射单向

References(x => x.Parent).Column("ParentID");

然后我可以保存，但是如果我取一个子节点父节点是空的

有什么办法解决这个问题吗?

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Fit.Server.Persistence.Test.Repositories.SagOpgave.SagOpgavePersistenceTest。Opgave_gets_references抛出异常:

系统。InvalidCastException: Object必须实现IConvertible.

at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType)
at Pervasive.Data.SqlClient.PsqlParameter.a(Type A_0)
at Pervasive.Data.SqlClient.q.a(PsqlParameter A_0, k A_1, a3 A_2, Int32 A_3)
at Pervasive.Data.SqlClient.q..ctor(PsqlParameter A_0, k A_1, Int32 A_2, Int32 A_3, Int32 A_4)
at Pervasive.Data.SqlClient.PsqlParameterCollection.a(k A_0, Int32 A_1, Int32 A_2, Int32 A_3)
at Pervasive.Data.SqlClient.PsqlCommand.a(Boolean A_0, CommandBehavior A_1, Boolean A_2)
at Pervasive.Data.SqlClient.PsqlCommand.ExecuteNonQuery()
at NHibernate.AdoNet.AbstractBatcher.ExecuteNonQuery(IDbCommand cmd)
at NHibernate.AdoNet.NonBatchingBatcher.AddToBatch(IExpectation expectation)
at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql, Object obj, ISessionImplementor session)
at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Object obj, ISessionImplementor session)
at NHibernate.Action.EntityInsertAction.Execute()
at NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
at NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
at NHibernate.Engine.ActionQueue.ExecuteActions()
at NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource session)
at NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent event)
at NHibernate.Impl.SessionImpl.Flush()
at NHibernate.Transaction.AdoTransaction.Commit()

找到一个目前为止有效的解决方案。

References(x => x.Parent).Column("ParentID").Not.Insert();
HasMany(x => x.Children).KeyColumn("ParentID").Cascade.All();