我正在使用wrapper for the ASP.NET Membership provider,以便我可以使用更多松散耦合的库。我想使用StructureMap来提供真正的IoC,但是我在使用User-to-Profile工厂对象进行配置时遇到了麻烦,我正在使用它来在用户的上下文中实例化配置文件。这是相关的细节,首先是库中的接口和包装器:
// From ASP.Net MVC Membership Starter Kit
public interface IProfileService
{
object this[string propertyName] { get; set; }
void SetPropertyValue(string propertyName, object propertyValue);
object GetPropertyValue(string propertyName);
void Save();
}
public class AspNetProfileBaseWrapper : IProfileService
{
public AspNetProfileBaseWrapper(string email) {}
// ...
}
接下来,用于与配置文件数据中的特定属性进行交互的存储库:
class UserDataRepository : IUserDataRepository
{
Func<MembershipUser, IProfileService> _profileServiceFactory;
// takes the factory as a ctor param
// to configure it to the context of the given user
public UserDataRepository(
Func<MembershipUser, IProfileService> profileServiceFactory)
{
_profileServiceFactory = profileServiceFactory;
}
public object GetUserData(MembershipUser user)
{
// profile is used in context of a user like so:
var profile = _profileServiceFactory(user);
return profile.GetPropertyValue("UserData");
}
}
这是我第一次尝试提供StructureMap注册表配置,但它显然不起作用:
public class ProfileRegistry : Registry
{
public ProfileRegistry()
{
// doesn't work, still wants MembershipUser and a default ctor for AspNetProfileBaseWrapper
For<IProfileService>().Use<AspNetProfileBaseWrapper>();
}
}
理论上我如何注册它看起来像:
// syntax failure :)
For<Func<MembershipUser, IProfileService>>()
.Use<u => new AspNetProfileBaseWrapper(u.Email)>();
...我可以在配置中定义工厂对象。这显然不是有效的语法。有没有一种简单的方法来实现这一目标?我是否应该使用其他模式来允许在用户的上下文中构建我的UserDataRepository?谢谢!
答案 0 :(得分:15)
如果我查看了使用的重载,我会找到
Use(Func<IContext> func);
...我可以用作:
For<IUserService>().Use(s =>
new AspNetMembershipProviderWrapper(Membership.Provider));