public static T DataLoader <T>(
this IResolverContext context,
string key)
where T : class, IDataLoader
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException(
TypeResources.DataLoaderRegistry_KeyNullOrEmpty,
nameof(key));
}
if (TryGetDataLoader(context, key,
out T dataLoader,
out IDataLoaderRegistry registry))
{
return(dataLoader);
}
return(GetOrCreate <T>(key, registry, r => r.Register(
key, ActivatorHelper.CreateInstanceFactory <T>())));
}
public static bool Register <T>(
this IDataLoaderRegistry registry)
where T : class, IDataLoader
{
Func <IServiceProvider, T> createInstance =
ActivatorHelper.CreateInstanceFactory <T>();
return(registry.Register(typeof(T).FullName, createInstance));
}
public static T DataLoader <T>(
this IResolverContext context,
string key)
where T : class, IDataLoader
{
if (string.IsNullOrEmpty(key))
{
// TODO : resources
throw new ArgumentException(
"The DataLoader key cannot be null or empty.",
nameof(key));
}
if (TryGetDataLoader(context, key,
out T dataLoader,
out IDataLoaderRegistry registry))
{
return(dataLoader);
}
return(GetOrCreate <T>(key, registry, r => r.Register(
key, ActivatorHelper.CreateInstanceFactory <T>())));
}