具有屬性的多對多映射 - 主鍵是外鍵

Question

我在使用屬性關係映射多對多時遇到了問題。就像這裏的問題

fluent nhibernate - Many to Many mapping with attribute

但是我沒有在我的中產階級的一個主鍵，取而代之的則是由其他兩個班的ID的。

報價SKU類（中產階級）

public class QuotationSKUCost : Entity 
{ 
    public virtual decimal UnitPrice { get; set; } 
    public virtual Quotation Quotation { get; set; } 
    public virtual QuotationRequestSKU QuotationRequestSKU { get; set; } 
} 

報價類

public class Quotation : Entity 
{ 
    public virtual int Id { get; set; } 
    public virtual DateTime ValidUntil { get; set; } 
    public virtual string Data { get; set; } 
    public virtual ICollection<QuotationSKUCost> QuotationSKUCosts { get; set; } 
} 

報價請求SKU

public class QuotationRequestSKU : Entity 
{ 
    public virtual int Id { get; set; } 
    public virtual int Quantity { get; set; } 
    public virtual ICollection<QuotationSKUCost> QuotationSKUCost { get; set; } 
} 

中產階級映射!!

public QuotationSKUCostMapping() 
    { 
     Table("QuotationSKUCost"); 
     CompositeId() //need to map QuotationId and QuotationRequestSKUid as Composite key 
      .KeyProperty(x => x.Quotation, "QuotationId") 
      .KeyReference(x => x.QuotationRequestSKU, "QuotationRequestSKUId"); 
     Map(x => x.UnitPrice); 
    } 

嘗試調試時，我得到的錯誤是：

無法確定類型：ORM.Entities.Quote.Quotation，ORM， 版本= 1.0.0.0，文化=中性公鑰=空，爲列： NHibernate.Mapping.Column（QuotationId）

編輯：添加報價馬pping

public QuotationMapping() 
    { 
     Id(x => x.Id).Column("QuotationId"); 
     Map(x => x.ValidUntil); 
     Map(x => x.Data); 
     HasMany(x => x.QuotationSKUCosts).KeyColumn("QuotationId"); 
    } 

Answer 1

找到了答案後，熱切

  .KeyProperty(x => x.Quotation, "QuotationId") 
      .KeyReference(x => x.QuotationRequestSKU, "QuotationRequestSKUId"); 

應該

  .KeyReference(x => x.Quotation, "QuotationId") 
      .KeyReference(x => x.QuotationRequestSKU, "QuotationRequestSKUId");