無效的索引4 = 4

Question

我有以下模式：

public class ExchangeRate 
{ 
    [Key, Column(Order = 1)] 
    public virtual int JobId { get; set; } 

    [Key, Column(Order = 2), MaxLength(3)] 
    public virtual Currency Source { get; set; } 

    [Key, Column(Order = 3), MaxLength(3)] 
    public virtual Currency Target { get; set; } 

    public virtual decimal Rate { get; set; } 

    public virtual Job Job { get; set; } 

    public override bool Equals(object obj) 
    { 
     if (obj == null) 
      return false; 

     var t = obj as ExchangeRate; 

     if (t == null) 
      return false; 

     if (this.Job == t.Job & this.Source == t.Source && this.Target == t.Target) 
      return true; 

     return false; 
    } 

    public override int GetHashCode() 
    { 
     return (this.JobId + "|" + this.Source + "|" + this.Target).GetHashCode(); 
    } 

我有以下自動映射控制裝置：

public void Override(AutoMapping<ExchangeRate> mapping) 
{ 
    mapping.Map(x => x.Source).CustomType<GenericEnumMapper<Currency>>(); 
    mapping.Map(x => x.Target).CustomType<GenericEnumMapper<Currency>>(); 

    // Define the composite key 
    mapping.CompositeId() 
     .KeyProperty(e => e.JobId, "JobId") 
     .KeyProperty(e => e.Source) 
     .KeyProperty(e => e.Target); 
} 

我已經出口到下面導出的映射文件嘗試並幫助診斷問題：

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> 
    <class xmlns="urn:nhibernate-mapping-2.2" name="JFS.Data.Model.ExchangeRate, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" table="ExchangeRates"> 
    <composite-id> 
     <key-property name="JobId" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> 
     <column name="JobId" /> 
     </key-property> 
     <key-property name="Source" type="FluentNHibernate.Mapping.GenericEnumMapper`1[[JFS.Data.Currency, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], FluentNHibernate, Version=1.3.0.717, Culture=neutral, PublicKeyToken=8aa435e3cb308880"> 
     <column name="Source" /> 
     </key-property> 
     <key-property name="Target" type="FluentNHibernate.Mapping.GenericEnumMapper`1[[JFS.Data.Currency, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], FluentNHibernate, Version=1.3.0.717, Culture=neutral, PublicKeyToken=8aa435e3cb308880"> 
     <column name="Target" /> 
     </key-property> 
    </composite-id> 
    <property name="Source" type="FluentNHibernate.Mapping.GenericEnumMapper`1[[JFS.Data.Currency, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], FluentNHibernate, Version=1.3.0.717, Culture=neutral, PublicKeyToken=8aa435e3cb308880"> 
     <column name="Source" /> 
    </property> 
    <property name="Target" type="FluentNHibernate.Mapping.GenericEnumMapper`1[[JFS.Data.Currency, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], FluentNHibernate, Version=1.3.0.717, Culture=neutral, PublicKeyToken=8aa435e3cb308880"> 
     <column name="Target" /> 
    </property> 
    <property name="Rate" type="System.Decimal, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> 
     <column name="Rate" /> 
    </property> 
    <many-to-one class="JFS.Data.Model.Job, JFS.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" name="Job"> 
     <column name="JobId" /> 
    </many-to-one> 
    </class> 
</hibernate-mapping> 

我一直在撕掉我的頭髮現在正試圖解決這個問題，但沒有成功。我閱讀過很多文章，並且未能成功應用任何解決方案。我對NHibernate相對比較陌生，並且熱衷於開始使用它，但到目前爲止，已經證明了一個非常陡峭的學習曲線來啓動和運行項目。任何意見的解決方案和解釋的建議，將不勝感激。

Answer 1

使用KeyReference而不是KeyPropery作爲主鍵的一部分的多對一關係。

.KeyReference(e => e.Source) 
.KeyReference(e => e.Target);