@startuml

' 定义实体类
class Student {
  +Long id
  +String studentNumber
  +String name
  +BigDecimal points
}

class Teacher {
  +Long id
  +String username
  +String password
}

class RollCallSettings {
  +String rollCallMode
  +String triggerRandomEvent
  +String wheelOfFortune
}

class RollCallResponse {
  +String studentId
  +String name
  +BigDecimal points
  +String message
}

class PointsRequest {
  +BigDecimal pointsDelta
}

@enduml