Domain Modelling Data Types

Let's now add type information to our class diagram.

Add Type Information to the Class Diagram

Here's what I came to in Miro:

Domain Diagram with Type Information

Formalize the Class Diagram

Here's the class diagram formalized as MermaidJs.

I've went with the Java-style way of declaring types in the formalized version:

classDiagram
    class Organizer {
    }

    class Attendee {
    }

    class Staff {
    }

    class User {
        UUID id
        String name
        String email
    }

    class Event {
        UUID id
        String name
        LocalDateTime start
        LocalDateTime end
        String venue
        LocalDateTime salesEndDate
        LocalDateTime salesEndDate
        EventStatusEnum status
    }

    class TicketType {
        UUID id
        String name
        Double price
        Integer totalAvailable
    }

    class Ticket {
        UUID: id
        TicketStatusEnum status
        LocalDateTime createdDateTime
    }

    class QrCode {
        UUID id
        LocalDateTime generatedTime
        QrCodeStatusEnum status
    }

    class TicketValidation {
        UUID id
        TicketValidationStatusEnum status
        LocalDateTime validationTime
        TicketValidationMethodEnum validationMethod
    }


    Organizer --|> User
    Attendee --|> User
    Staff --|> User
    Organizer "1" --* "0..*" Event: organizes
    Attendee --o Event: attends
    Staff --o Event: works at
    User "1" --* "0..*" Ticket: purchases
    Event "1" --* "0..*" TicketType: offers
    TicketType "1" --* "0..*" Ticket: categorizes
    Ticket "1" --* "0..*" TicketValidation: validated
    Ticket "1" --* "1..*" QrCode : has

Summary

Added data type information to the application's class diagram