public void Add <S>(SystemUri.SchemeSegment scheme)
where S : CatalogSubject <S>, new()
{
LeadingSubjects[typeof(S)] = new S();
var descendents = Descendents <S>(scheme).ToDictionary(d => d.GetType());
SubjectsByType.AddRange(descendents);
foreach (var d in descendents)
{
SubjectsByUrn.Add(d.Value.Urn, d.Value);
}
}
static IEnumerable <CatalogSubject> Descendents(CatalogSubject parent, SystemUri.SchemeSegment scheme)
{
foreach (var childType in parent.GetType().GetNestedTypes())
{
var child = (CatalogSubject)Activator.CreateInstance(childType, parent);
yield return(child);
foreach (var grandchild in Descendents(child, scheme))
{
yield return(grandchild);
}
}
}
public void RegisterSubject <S>(SystemUri.SchemeSegment scheme)
where S : CatalogSubject <S>, new()
=> CatalogState.Add <S>(scheme);
static IEnumerable <CatalogSubject> Descendents <S>(SystemUri.SchemeSegment scheme)
where S : CatalogSubject, new() => Descendents(new S(), scheme);
