Question about association classes in UML class diagram
So I need to model the situation where we have a collection of people who are members of a federation. You can either be an active member or an inactive member of the federation. If you're inactive, you're not a member of any club. If you're an active member, you are a main member to exactly one club and can have any number of clubs that you're an internal member of.
My current UML model does not enforce that every active player should have exactly one main membership so I'm wondering how I can fix this. I personally think that I can solve this by drawing a regular association between 'Main' and 'Active' but I don't really know if this is allowed or if there are any other solutions to my problem.
Main is an instance of a UML Association Class because its superclass is Membership. That means Main can specialize the association (which requires another dashed line) and can subset one or both association ends. When you say
isMemberOf { subsets isMemberOf } 1
on the left end of the new association line, that means every active player must participate in exactly one Main membership, plus any number of other kinds of memberships.
You should consider renaming the subsetting and / or subsetted properties for clarity, but UML does not require it. For example,
isMainMemberOf { subsets isMemberOf } 1
(Although that name implies a person is the Main member of a club, which is not quite right.)
- How do I use [RelayCommand] in base class
- Why can I not update the default values of a derived class through a constructor?
- Inherited javascript property not set during constructor
- Pydantic AttributeError: '' object has no attribute '__fields_set__'
- Inherit from a generic base class in C#
- Extension methods versus inheritance
- How do I change a variable while inheriting?
- Datetime "fromtimestamp()" ignores inheritance if timezone is not None
- Classes not extending java.lang.Object
- Checking if Type or instance implements IEnumerable regardless of Type T
- Base class method working on private member of derived class
- C++ template class inheritance: calling base class constructor in derived class constructor
- c++ Linker error undefined reference to vtable
- How can you inherit from a sealed class using reflection in .Net?
- AttributeError: object has no attribute 'method'
- Implicit casting / polymorphism with a Dictionary in C#
- Why is the __proto__ of Object.prototype, another Object.prototype?
- why derive from a concrete class is a poor design
- Inheritance classes in Scheme
- How to "perfectly" override a dict?
- Template inference when there are multiple possibilities?
- Derived python dataclass cannot override default value?
- How to print the string name of a class that inherits attributes and methods from a parent class
- Why can't I make an abstract method static in my implementation?
- Dataclass inheriting using kw_only for all variables
- Dataclass inheritance variables not working
- How to let two Python abstract classes implement each other's abstract methods?
- Typescript Extend Generic Interface
- How do I assign the derived class name as a param within the base class constructor?
- C# - Making all derived classes call the base class constructor