here are my objects.
interface IMapper<Input, Output>
{
Output MapFrom(Input item);
}
interface IEnumerableMapper<Input, Output> :
IMapper<IEnumerable<Input>, IEnumerable<Output>>
{
}
class IntToString: IMapper<int, string>
{
string MapFrom(int item) { return item.ToString(); }
}
interface EnumerableMapper<Input, Output> : IEnumerableMapper<Input,
Output>
{
IEnumerable<Output> MapFrom(IEnumerable<Input>item)
{
IMapper<Input, Output> mapper =
IoC.Resolve<IMapper<Input, Output>>();
foreach(Input input in item) yield return
mapper.MapFrom(input);
}
}
here is how I would access them
IoC.Resolve<IMapper<int, string>>().MapFrom(1);
IoC.Resolve<IEnumerableMapper<int, string>>().MapFrom(new int[]
{1,2,3});
-------------------------------------
IoC.Initialize(new WindsorContainer());
IoC.Container.Register(AllTypes
.Pick().FromAssembly(assembly)
.WithService.FirstInterface()
IoC.Resolve<IMapper<int, string>>() // exception: Not a
GenericeTypeDefiniation
IoC.Resolve<IEnumerableMapper<int, string>>() // successful
-------------------------------------
IoC.Initialize(new WindsorContainer());
IoC.Container.Register(AllTypes
.Pick().FromAssembly(assembly)
.WithService.Select(TheFirstInterface)
private Type TheFirstInterface(Type type)
{
return type.GetInterfaces()[0];
}
IoC.Resolve<IMapper<int, string>>() // successful
IoC.Resolve<IEnumerableMapper<int, string>>() // exception: No
component found
How can I define TheFirstInterface so it will map
IntToString to IMapper<int, string>
EnumerableMapper<Input, Output> to IEnumerableMapper<Input, Output>
correctly?
this example is small. in productionn there would be 1 instance of a
generic EnumerableMapper and many instances of defined Mappers. For
now I created a facility like this.
public void Init()
{
Kernel.Register(
Component.For(typeof(IEnumerableMapper<,>).ImplementedBy(EnumerableMapper<,>));
Kernel.Register(
AllTypes.Of(typeof(IMapper<,>)
.FromAssembly(GetType().Assembly)
.WithService.Select(TheFirstInterface));
}
private static Type TheFirstInterface(Type type)
{
return type.GetInterfaces()[0];
}
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