我添加了以下项目:

I've added the following items:

子类:字段_parent，构造函数
父类:AddChild方法
子映射:用于父级属性的多音
父级映射:inverse(true)使子级成为父级处理程序

Child class: a field _parent, a constructor
Parent class: AddChild method
Child mapping: manytoone for parent property
Parent mapping: inverse(true) to make parent handler of the children

完整代码:

public class Child
{
    int Id;
    string Name;
    Parent _parent;

    public Child(Parent parent)
   {
     _parent = parent;
   }
}

public class Parent
{
    int Id;
    string Name;
    Iesi.Collections.Generic.ISet<Child> Children;

    public virtual Child AddChild()
    {
       Child newChild = new Child(this); //link parent to child via constructor
       Children.Add(newChild); //add child to parent's collection
       return newChild; //return child for direct usage
    }
}

public ChildMapping()
{
    Table("Children");

    Id(p => p.Id, m => {
        m.Column("Id");
        m.Generator(Generators.Identity);
    });

    Property(p => p.Name, m => {
        m.Column("Name");
        m.NotNullable(true);
    });

    ManyToOne(x => x.Parent, map => {
         map.Column("Id"); /* id of the parent table */
         map.Access(Accessor.Field);
         map.NotNullable(true);
         map.Class(typeof(Parent));
        });    
}

public ParentMapping()
{
    Table("Parents");

    Id(p => p.Id, m => {
        m.Column("Id");
        m.Generator(Generators.Identity);
    });

    Property(p => p.Name, m => {
        m.Column("Name");
        m.NotNullable(true);
    });

    Set(p => p.Children, m => {
        m.Cascade(Cascade.All | Cascade.DeleteOrphans);
        m.Key(k => {
            k.Column("Id"); /* id of the child table */
            k.NotNullable(true);
            k.Inverse(true); /* makes the parent handle it's childlist */
        });
    }, a => a.OneToMany());
}

应该起作用.