我正在尝试使用Fluent-NHibernate自动映射功能(在该软件的最新版本),并遇到使用GUID作为主键字段的问题。如果我使用主键的整数字段,表格生成成功,并且所有Nhibernate功能似乎都正常工作。仅供参考,我正在使用NHibernate生成我的数据库表。问题与流畅的Nhibernate自动映射和GUID/UniqueIdentifiers作为主键字段
以下是几个带整数ID的类。
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Reflection;
namespace Sample.Data.Entities
{
public class Employee
{
public virtual int Id { get; private set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual Store Store { get; set; }
}
public class Product
{
public virtual int Id { get; private set; }
public virtual string Name { get; set; }
public virtual double Price { get; set; }
public virtual IList<Store> StoresStockedIn { get; private set; }
public Product()
{
StoresStockedIn = new List<Store>();
}
}
public class Store
{
public virtual int Id { get; private set; }
public virtual string Name { get; set; }
public virtual IList<Product> Products { get; set; }
public virtual IList<Employee> Staff { get; set; }
public Store()
{
Products = new List<Product>();
Staff = new List<Employee>();
}
public virtual void AddProduct(Product product)
{
product.StoresStockedIn.Add(this);
Products.Add(product);
}
public virtual void AddEmployee(Employee employee)
{
employee.Store = this;
Staff.Add(employee);
}
}
}
这里是与GUID相同的类。
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Reflection;
namespace Sample.Data.Entities
{
public class Employee
{
public virtual Guid Id { get; private set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual Store Store { get; set; }
}
public class Product
{
public virtual Guid Id { get; private set; }
public virtual string Name { get; set; }
public virtual double Price { get; set; }
public virtual IList<Store> StoresStockedIn { get; private set; }
public Product()
{
StoresStockedIn = new List<Store>();
}
}
public class Store
{
public virtual Guid Id { get; private set; }
public virtual string Name { get; set; }
public virtual IList<Product> Products { get; set; }
public virtual IList<Employee> Staff { get; set; }
public Store()
{
Products = new List<Product>();
Staff = new List<Employee>();
}
public virtual void AddProduct(Product product)
{
product.StoresStockedIn.Add(this);
Products.Add(product);
}
public virtual void AddEmployee(Employee employee)
{
employee.Store = this;
Staff.Add(employee);
}
}
}
这是我的配置。
return Fluently.Configure()
.Database(MsSqlConfiguration.MsSql2008
.ConnectionString(c => c.FromConnectionStringWithKey("AAAConnectionString"))
.UseReflectionOptimizer()
.AdoNetBatchSize(25)
.DefaultSchema("dbo")
.Cache(c => c
.UseQueryCache()
.ProviderClass<HashtableCacheProvider>())
.ShowSql())
.Mappings(m=>m.AutoMappings
.Add(AutoMap.AssemblyOf<Sample.Data.Entities.Product>()
.Where(type => type.Namespace == "Sample.Data.Entities.Product")
.Conventions.AddFromAssemblyOf<Sample.Data.Fluent.Conventions.PrimaryKeyNameConvention>()
))
.ExposeConfiguration(BuildSchema)
.BuildSessionFactory();
要解决这个问题,我试图生成1公约(见下文))命名编号字段(虽然我认为它应该是不必要的)和2)生成的ID(这是我想将会是自动的)。我不确定发生了什么,或者为什么这不起作用。
public class PrimaryKeyNameConvention : IIdConvention
{
public bool Accept(IIdentityInstance id)
{
return true;
}
public void Apply(IIdentityInstance id)
{
id.Column("Id");
}
}
public class PrimaryKeyGeneratorConvention : IIdConvention
{
public bool Accept(IIdentityInstance id)
{
return true;
}
public void Apply(IIdentityInstance id)
{
id.GeneratedBy.GuidComb();
}
}
此外,如果我关闭automapping并使用流利配置的映射表,则会成功生成表。
这使我疯狂,我相信它可能是一个快速修复。有任何想法吗?
谢谢!
安东尼
感谢您回来并通知,那个问题没有了。因此,我们知道这不是今天任何人的事情。 – Marcel 2010-10-20 14:30:39