我在玩 ServiceStack,想知道它是否支持这种情况。我在我的请求类型中使用泛型,因此许多从公共接口继承的 DTO 将支持相同的基本方法 [例如... GetById(int Id)]。
使用特定于一种 DTO 的请求类型可以工作,但会破坏泛型的优点......
var fetchedPerson = client.Get<PersonDto>(new PersonDtoGetById() { Id = person.Id });
Assert.That(person.Id, Is.EqualTo(fetchedPerson.Id)); //PASS
将路由映射到泛型也可以:
Routes.Add<DtoGetById<PersonDto>>("/persons/{Id}", ApplyTo.Get);
...
var fetchedPerson2 = client.Get<PersonDto>(string.Format("/persons/{0}", person.Id));
Assert.That(person.Id, Is.EqualTo(fetchedPerson2.Id)); //PASS
但是使用端到端通用请求类型失败:
var fetchedPerson3 = client.Get<PersonDto>(new DtoGetById<PersonDto>() { Id = person.Id });
Assert.That(person.Id, Is.EqualTo(fetchedPerson3.Id)); //FAIL
我想知道我是否只是遗漏了一些东西,或者我是否试图将 ooone 层抽象得太远...... :)
下面是一个使用 NUnit 的完整的失败程序,默认的 ServiceStack 东西:
namespace ssgenerics
{
using NUnit.Framework;
using ServiceStack.ServiceClient.Web;
using ServiceStack.ServiceHost;
using ServiceStack.ServiceInterface;
using ServiceStack.WebHost.Endpoints;
[TestFixture]
class Program
{
public static PersonDto GetNewTestPersonDto()
{
return new PersonDto()
{
Id = 123,
Name = "Joe Blow",
Occupation = "Software Developer"
};
}
static void Main(string[] args)
{}
[Test]
public void TestPutGet()
{
var listeningOn = "http://*:1337/";
var appHost = new AppHost();
appHost.Init();
appHost.Start(listeningOn);
try
{
var BaseUri = "http://localhost:1337/";
var client = new JsvServiceClient(BaseUri);
var person = GetNewTestPersonDto();
client.Put(person);
var fetchedPerson = client.Get<PersonDto>(new PersonDtoGetById() { Id = person.Id });
Assert.That(person.Id, Is.EqualTo(fetchedPerson.Id));
var fetchedPerson2 = client.Get<PersonDto>(string.Format("/persons/{0}", person.Id));
Assert.That(person.Id, Is.EqualTo(fetchedPerson2.Id));
Assert.That(person.Name, Is.EqualTo(fetchedPerson2.Name));
Assert.That(person.Occupation, Is.EqualTo(fetchedPerson2.Occupation));
var fetchedPerson3 = client.Get<PersonDto>(new DtoGetById<PersonDto>() { Id = person.Id });
Assert.That(person.Id, Is.EqualTo(fetchedPerson3.Id));
Assert.That(person.Name, Is.EqualTo(fetchedPerson3.Name));
Assert.That(person.Occupation, Is.EqualTo(fetchedPerson3.Occupation));
}
finally
{
appHost.Stop();
}
}
}
public interface IDto : IReturnVoid
{
int Id { get; set; }
}
public class PersonDto : IDto
{
public int Id { get; set; }
public string Name { get; set; }
public string Occupation { get; set; }
}
public class DtoGetById<T> : IReturn<T> where T : IDto { public int Id { get; set; } }
public class PersonDtoGetById : IReturn<PersonDto> { public int Id { get; set; } }
public abstract class DtoService<T> : Service where T : IDto
{
public abstract T Get(DtoGetById<T> Id);
public abstract void Put(T putter);
}
public class PersonService : DtoService<PersonDto>
{
public override PersonDto Get(DtoGetById<PersonDto> Id)
{
//--would retrieve from data persistence layer
return Program.GetNewTestPersonDto();
}
public PersonDto Get(PersonDtoGetById Id)
{
return Program.GetNewTestPersonDto();
}
public override void Put(PersonDto putter)
{
//--would persist to data persistence layer
}
}
public class AppHost : AppHostHttpListenerBase
{
public AppHost()
: base("Test HttpListener",
typeof(PersonService).Assembly
) { }
public override void Configure(Funq.Container container)
{
Routes.Add<DtoGetById<PersonDto>>("/persons/{Id}", ApplyTo.Get);
}
}
}