GroupDataLoaderFactory <TKey, TValue>(
this IResolverContext context,
string key,
FetchGroupeFactory <TKey, TValue> factory)
{
if (TryGetDataLoader(context, key,
out IDataLoader <TKey, TValue[]> dataLoader,
out IDataLoaderRegistry registry))
{
return(dataLoader);
}
return(GetOrCreate <IDataLoader <TKey, TValue[]> >(
key, registry, r => r.Register(key, factory)));
}
public static bool Register <TKey, TValue>(
this IDataLoaderRegistry registry,
string key,
FetchGroupeFactory <TKey, TValue> factory)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException(
TypeResources.DataLoaderRegistry_KeyNullOrEmpty,
nameof(key));
}
if (factory == null)
{
throw new ArgumentNullException(nameof(factory));
}
return(registry.Register(key, services =>
new FetchGroupedDataLoader <TKey, TValue>(
factory(services))));
}