Architecture

General Architecture Information

Model Classes and Databases

Database Schema

Firebase real-time databases store everything in one JSON tree. The following tree represents the schema of that tree, but avoids exact JSON syntax for conciseness. [Type] represents a list of that type. Non-JSON-supported types, such as UUIDs, Dates, Datetimes, are strings.

Root of Firebase real-time database tree:

• users: list of objects with:
  • id: UUID
  • classes: [UUID]
  • classInvitations: [UUID]
  • globalSettings: bool
  • blockedUsers: [UUID]
• settings: list of objects with:
  • user: UUID
  • class: UUID
  • unpreparedOption: bool
  • selectionAnimation: bool
  • selectionAlgorithmIParam: int
  • skippedStudentNotRespottedOnThatDay: bool
  • raiseAbsentSpotProb: bool
  • raiseSkipSpotProb: bool
  • currentRatingSystemMax: int
• classes: list of objects with:
  • students: [UUID]
  • layout: UUID
  • name: string
  • owner: UUID
  • acceptedUsers: [UUID]
  • invitedUsers: [UUID]
• students: list of objects with:
  • id: UUID
  • class: UUID
  • firstname: string
  • lastname: string
  • nonAbsentSpottings: int
  • lastNonAbsentSpotting: Date
  • absences: int
  • unprepareds: int
  • lastAbsence: Date
  • lastUnprepared: Date
  • totalOfRatings: double
  • numberOfRatings: int
  • seat: string
  • profilePicture: Cloud Storage for Firebase URI string
  • year: string
• spottings: list of objects with:
  • id: UUID
  • student: UUID
  • class: UUID
  • unprepared: bool
  • rating: double
  • skipped: bool
  • absent: bool
  • datetime: DateTime
  • maxOfRatingSystem: int
• gridLayouts: list of objects with:
  • id: UUID
  • class: UUID
  • rows: int
  • columns: int
  • seatNumberingSystem: string
• bowlLayouts: list of objects with:
  • id: UUID
  • class: UUID
  • rows: int
  • columnsPerRow: [int]
  • seatNumberingSystem: string
• customLayouts: list of objects with:
  • id: UUID
  • class: UUID
  • seatNumberingSystem: string
  • seats: list of objects with:
    • x: double
    • y: double
    • rotation: double
    • name: string

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