NhiberNate Map by code不包含'id'的定义
本文关键字:定义 id 包含 Map by code NhiberNate | 更新日期: 2023-09-27 18:16:35
我玩过NHiberNate,我让它与xml定义一起工作,但我被困在我的Map by Code测试中。我有以下代码:
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Linq;
using NHibernate;
using NHibernate.Cfg;
using NHibernate.Mapping.ByCode;
using NHibernate.Mapping.ByCode.Conformist;
using NHibernate.Mapping;
namespace NHibernatePets
{
public class Pet
{
virtual public int id { get; set; }
virtual public string PetName { get; set; }
virtual public string Species { get; set; }
virtual public DateTime Birthday { get; set; }
virtual public string Speak()
{
return "Hi. My name is '" + PetName + "' and I'm a " + Species + " born on " + Birthday + ".";
}
}
public class PetMap : ClassMapping<Pet>
{
public PetMap()
{
table("Pet");
Lazy(true);
Id(x => x.Id, map => map.Generator(Generators.Identity));
Property(x => x.Petname, map => map.NotNullable(true));
Property(x => x.Species, map => map.NotNullable(true));
Property(x => x.Birthday, map => map.NotNullable(true));
}
当我按下f5时,它给我以下错误信息
错误15 'NHibernatePets。宠物'不包含'Id'的定义,也没有扩展方法'Id'接受类型为'NHibernatePets '的第一个参数。可以找到Pet(您是否缺少using指令或程序集引用?)}
我的计划是能够在PET数据库上执行如下查询
using (ISession session = OpenSession())
{
IQuery query = session.CreateQuery(" FROM Pet");
IList<Pet> pets = query.List<Pet>();
Console.Out.WriteLine("pets.Count = " + pets.Count);
pets.ToList().ForEach(p => Console.WriteLine(p.Speak()));
}
当我使用xml映射表时,它工作了。我哪里做错了?
c#是区分大小写的,因为ID属性命名为" id
"
public class Pet
{
virtual public int id { get; set; }
不能映射为Id
Id(x => x.Id... // there is no Id on x === Pet
因此,为了遵循c#中常见的命名约定,只需将属性名称更改为 Id
public class Pet
{
//virtual public int id { get; set; }
virtual public int Id { get; set; }