fluent-nhibernate - 自动映射没有映射 Id

Question

My Entity Class:
public class Building 
    {
        /// <summary>
        /// internal Id 
        /// </summary>
        public virtual long Id { get; set; }
..............
}

我的映射:

var model = AutoMap.AssemblyOf<Building>()
                        .Setup(s => s.FindIdentity = p => p.Name == "Id")
                        .Where(t => t.Namespace == "SpikeAutoMappings");

var database = Fluently.Configure()
                        .Database(DatabaseConfigurer)
                        .Mappings(m=>m.AutoMappings.Add(model));

我需要有人帮我看看哪里出了问题，因为我在运行单元测试时一直出现这个错误:

Initialization method TestProject1.MappingTestBase.TestInitialize threw exception. FluentNHibernate.Cfg.FluentConfigurationException:  FluentNHibernate.Cfg.FluentConfigurationException: An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.

 --->  FluentNHibernate.Visitors.ValidationException: The entity doesn't have an Id mapped. Use the Id method to map your identity property. For example: Id(x => x.Id)..

Answer 1

以上两个答案都是正确的；除非您指定不同，否则自动映射器会假定您有一个 int Id 字段。
如果您的 ID 很长，自动映射器可能无法正确识别它。
尝试为您的类定义一个 MappingOverride，如下所示:

public class UserMappingOverride : IAutoMappingOverride<User>
{
    #region IAutoMappingOverride<User> Members

    public void Override(AutoMapping<User> mapping)
    {
        mapping.Id(u => u.Name);
    }

    #endregion
}

Id() 函数允许您覆盖自动映射器对 ID 字段应该是什么的约定。
有关覆盖的更多信息，请参阅 http://wiki.fluentnhibernate.org/Auto_mapping#Overrides .
干杯，
强尼