使用公共属性将NHibernate映射到实体

我正在使用IQueryable<gt;建立批处理查询。

假设我有这个实体和映射:

public class Calculation 
{
    public virtual int Id { get; set; }
    public virtual Organisation Organisation { get; set; }
    public virtual Charge Charge { get; set; }
    public virtual TransactionTotal TransactionTotal { get; set; }
}

public class CalculationMap : ClassMap<Calculation>
{
    public CalculationMap()
    {
        Id(x => x.Id).GeneratedBy.Identity();
        References(x => x.Organisation).Not.Nullable().UniqueKey("OC");
        References(x => x.Charge).Not.Nullable().UniqueKey("OC");
    }

这是我需要上的课:我用一个视图来给出每个组织的总金额和费用:

public class TransactionTotal 
{
    public virtual int Id { get; set; }
    public virtual Organisation Organisation { get; set; }
    public virtual Charge Charge { get; set; }
    public virtual decimal Amount { get; set; }        
}

public class TransactionTotalMap : ClassMap<TransactionTotal>
{
    public TransactionTotalMap()
    {
        Id(x => x.Id).GeneratedBy.Identity();
        Table("TransactionTotalsView");
        References(x => x.Charge).Not.Nullable();
        References(x => x.Organisation).Not.Nullable();
        Map(x => x.Amount).Precision(15).Scale(2).Not.Nullable();
    }
}

HasOne(x => x.TransactionTotal); 但在这种情况下,我需要告诉Nhibernate使用组织和收费属性作为关键。

编辑:我已经按照@David:

CompositeId().KeyProperty(x => x.Organisation.Id).KeyProperty(x => x.Charge.Id);