[英]Why is Fluent NHibernate ignoring my convention?
I have a convention UserTypeConvention<MyUserType>
where MyUserType : IUserType
where MyUserType
handles an enum type MyEnum
. 我有一个约定UserTypeConvention<MyUserType>
其中MyUserType : IUserType
,其中MyUserType
处理枚举类型MyEnum
。 I have configured Fluent NHibernate thusly 我已经配置了Fluent NHibernate
sessionFactory = Fluently
.Configure()
.Database(MsSqlConfiguration.MsSql2005.ConnectionString(
c => c.Is(connectionString))
)
.Mappings(
m => m
.FluentMappings
.AddFromAssemblyOf<A>()
.Conventions
.AddFromAssemblyOf<A>()
)
.BuildSessionFactory();
where A
is a type in the same assembly as UserTypeConvention<MyUserType>
and MyUserType
. 其中A
是UserTypeConvention<MyUserType>
和MyUserType
在同一程序UserTypeConvention<MyUserType>
。 However, Fluent NHibernate is not applying MyUserType
to properties of type MyEnum
on my domain objects. 但是,功能NHibernate不适用MyUserType
到类型的属性MyEnum
在我的域对象。 Instead, it is applying FluentNHibernate.Mapping.GenericEnumMapper<MyEnumType>
to these properties. 相反,它将FluentNHibernate.Mapping.GenericEnumMapper<MyEnumType>
应用于这些属性。
What is going on? 到底是怎么回事?
For now I have solved this with: 现在我用以下方法解决了这个问题:
public class MyEnumUserTypeConvention : UserTypeConvention<MyEnumUserType> {
public override void Accept(IAcceptanceCriteria<IPropertyInspector> criteria) {
// Fluent NHibernate is too eager in applying GenericEnumMapper
// so our criteria is that it is already applied this type
criteria.Expect(x => x.Type == typeof(GenericEnumMapper<MyEnum>));
}
public override void Apply(IPropertyInstance instance) {
// we override Fluent NHibernate's application of GenericEnumMapper
instance.CustomType<MyEnumUserType>();
}
}
I think this should be thoroughly unnecessary. 我认为这应该是完全没必要的。 If someone told me this were a bug in Fluent NHibernate, that'd be fine. 如果有人告诉我这是Fluent NHibernate的一个错误,那就没事了。 If someone gave me a good reason why Fluent NHibernate should be so eager in applying GenericEnumMapper
that would be acceptable too. 如果有人给了我一个很好的理由,为什么Fluent NHibernate应该如此渴望应用GenericEnumMapper
,这也是可以接受的。
Ok i tried the following and I think it will works for you : 好的,我尝试了以下内容,我认为它适合您:
just overriede the Accept method in MyEnumUserTypeConvention class and do nothing inside it: 只是覆盖MyEnumUserTypeConvention类中的Accept方法,并在其中不执行任何操作:
public class MyEnumUserTypeConvention : UserTypeConvention<MyEnumUserType>
{
public override void Accept(FluentNHibernate.Conventions.AcceptanceCriteria.IAcceptanceCriteria<FluentNHibernate.Conventions.Inspections.IPropertyInspector> criteria)
{
///Do nothing
}
}
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