c# - 找不到字段 : 'NHibernate.NHibernateUtil.String'

Question

我正在尝试配置 NHibernate 包 id="NHibernate"version="4.0.0.4000"targetFramework="net451" 和 fluent 包 id="FluentNHibernate"version="2.0.1.0"targetFramework="net451"。以下代码:

var sessionFactory = Fluently.Configure()
.Database(SQLiteConfiguration.Standard.InMemory)
.Mappings(m =>
{
    m.FluentMappings
    .AddFromAssemblyOf<ExampleSagaMap>();
)
.ExposeConfiguration(cfg =>
{
    chemaExport = new SchemaExport(cfg);
})
.BuildSessionFactory();

map 代码:

public ExampleSagaMap()
{
    Not.LazyLoad();

    Id(x => x.CorrelationId).GeneratedBy.Assigned();

    Map(x => x.CurrentState)
        .Access.ReadOnlyPropertyThroughCamelCaseField(Prefix.Underscore)
        .CustomType<StateMachineUserType>();

    Map(x => x.MessagesReceived);
    Map(x => x.MessagesSent);
}

错误:

An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.

Inner error: {"Field not found: 'NHibernate.NHibernateUtil.String'."}

有人可以帮忙吗？谢谢

Answer 1

在我的例子中，我收到此错误是因为我使用引用 NHibernateUtil.String.SqlType 的 IUserType 实现了自定义枚举类型。

解决方案是改用新的 SqlTypeFactory。

/* Used by NHibernate to cast between string and type-safe-enum */
public class MyCustomEnumType : IUserType
{

    ...

    public SqlType[] SqlTypes
    {
        get { 
            return new[] {                   
                // not working for NHibernate 4.1
                //NHibernateUtil.String.SqlType 
                SqlTypeFactory.GetString(200)
            }; 
        }
    }        

    ...
}