oop - Object Oriented Design - C#

Question

I have a scenario with 4 classes like,

class SuperGroup,
class Group,
class SubGroup,
class MicroGroup,

Here, SuperGroup will contain a list of Groups, and a Group will contain a list of SubGroups and so on...

Now, I want to design my classes in a way that, Groups can only be created by SuperGroups, and similarly SuperGroups could only create Groups, they cannot create SubGroups directly. Rather when they want a SubGroup, they have to create a Group, then by that object of Group, they could create subGroups.

The same conditions will also apply to < Group,SubGroups > , < SubGroups,MicroGroups > .

How could I achieve that in C#.

Answer 1

Perhaps you want createChild() to be a public method of each class, with the actual child constructors protected or private?

Client code would then call the parent entity to create child entities, rather than being able to construct them directly.