NHibernate 3.2+的 Map by Code 实例

NHibernate 3.2+的 Map by Code 的文档真的很少,除了Fabio Maulo的2篇blog(顺带说李永京的翻译,没任何新的研究).

让人感慨NH的没落, 也许从没有流行过.

在没有文档的时候尝试map by code, 非常痛苦.

当然像这种 this.Property(p => p.StartDate); 没涉及关系的很简单.

实战上的东西就不一样了.

    public class TourInstance: Entity
    {
        public virtual Tour Tour { get; set; }
        public virtual IList<City> FromCity { get; set; } //出发城市
        public virtual IList<City> BackCity { get; set; } //返回城市
        public virtual DateTime StartDate { get; set; }
        public virtual DateTime EndDate { get; set; }
        public virtual int Capacity { get; set; }
    }

对应的Mapping 我是花了半天时间才摸索出来, 这样的效率怎么敢用来做项目,只能学习之用.

public class TourInstanceMapping : EntityMapping<TourInstance>
    {
        public TourInstanceMapping()
        {
            this.ManyToOne(x => x.Tour, m =>
            {
                m.Column("TourID");
                m.Cascade(Cascade.All);
                m.NotNullable(true);
            });

            this.IdBag(x => x.FromCity, c =>
                {
                    c.Id(i=>
                        {
                            i.Column("ID");
                            i.Generator(Generators.Native);
                        });
                    c.Key(k =>
                        {
                            k.Column("TourInsID");
                            k.ForeignKey("FK_FromCity_TourInstance");
                        });
                },
                r => r.ManyToMany(m =>
                    {
                        m.Column("CityID");
                        m.ForeignKey("FK_FromCity_City");
                    })
            );

            this.Property(p => p.StartDate);
            this.Property(p => p.EndDate);
            this.Property(p => p.Capacity);
        }
    }