流利的NHibernate-如何映射到引用了查询表的表

Question

我在下面定义了4个表：

Projects:
    Project_Id
    Project_Name

Vendors:
    Vendor_Id
    Vendor_Name

Project_Vendors:
    Project_Vendor_Id
    Project_Id
    Vendor_Id

Project_Vendor_Payments:
    Payment_Id
    Project_Vendor_Id
    Payment_Amount

我不确定从哪里开始定义我的类以与Fluent NHibernate一起使用，更不用说定义我的映射了。

一个项目可以有许多与之关联的供应商，并且一个供应商可以为每个项目收取许多付款。

关于如何实现此目标的任何想法？

Answer 1

我通过不引用查询表而是使用直接引用实体的外键列解决了这个问题。

这是我的表结构：

Projects:
    Project_Id
    Project_Name

Vendors:
    Vendor_Id
    Vendor_Name

Project_Vendors:
    Project_Vendor_Id
    Project_Id
    Vendor_Id

Project_Vendor_Payments:
    Payment_Id
    Project_Id
    Vendor_Id
    Payment_Amount

我的课程定义为：

public class Project
{
    public virtual int Id { get; set; }
    public virtual string Name { get; set; }
    public virtual IList<Vendor> Vendors { get; set; }
    public virtual IList<VendorPayment> VendorPayments { get; set; }
}

public class Vendor
{
    public virtual int Id { get; set; }
    public virtual string Name { get; set; }
}

public class VendorPayment
{
    public virtual int Id { get; set; }
    public virtual Vendor Vendor { get; set; }
    public virtual float Amount { get; set; }
}

和我的映射：

public ProjectMappings : ClassMap<Project>
{
    public ProjectMappings()
    {
        Table("Projects");
        Id(x => x.Id).Column("Project_Id");
        HasManyToMany(x => x.Vendors).Table("Project_Vendors")
            .ParentKeyColumn("Project_Id")
            .ChildKeyColumn("Vendor_Id")
            .Cascade.AllDeleteOrphan();
        HasMany(x => x.VendorPayments).Table("Project_Vendor_Payments")
            .KeyColumn("Project_Id")
            .Cascade.AllDeleteOrphan();
        Map(x => x.Name).Column("Project_Name")
    }
}

public class VendorMappings : ClassMap<Vendor>
{
    public VendorMappings()
    {
        Table("Vendors");
        Id(x => x.Id).Column("Vendor_Id");
        Map(x => x.Name).Column("Vendor_Name");
    }
}

public class VendorPaymentMappings : ClassMap<VendorPayment>
{
    public VendorPaymentMappings()
    {
        Table("Project_Vendor_Payments");
        Id(x => x.Id).Column("Payment_Id");
        References(x => x.Vendor).Column("Vendor_Id");
        Map(x => x.Amount).Column("Payment_Amount");
    }
}

这不是我的问题的确切答案，而只是解决问题的方法。 仍在寻找如何完全解决问题。