Fritter Backend Data Models

Sunday, October 16, 2022 a 1 minute read

Assignment 5  Categories: assignment

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Fritter abstract data models for my Fritter Backend assignment. To learn more about the API for this project, check out the README.md in the GitHub repository for my backend. The live backend for this application can be found at fritter-backend.61040.camk.co.

1. User
   1. State
   2. Actions
2. Freet
   1. State
   2. Actions
3. Community [Item]
   1. State
   2. Actions
4. Briefing [Item, App]
   1. State
   2. Actions
5. Feed [Item]
   1. State
   2. Actions
6. Concept Map

User

State

• Username: User → one Username
• Password: User → one Password
• Session: User → lone Session
• Following: User → set Users
• Followers: User → set Users

Actions

• create(u: Username, p: Password): User
• delete(u: User)
• modify(u: Username, p: Password)
• follow(u: User, f: User)
• unfollow(u: User, f: User)

Freet

State

• Author: Freet → one User
• Likes: Freet → set Users
• Replies: Freet → set Freets
• Community: Freet → lone Community
• Content: Freet → one String

Actions

• create(u: User, c: String): Freet
• delete(f: Freet)
• modify(f: Freet, c: String)
• attach(f: Freet, c: Community)
• detach(f: Freet)

Community [Item]

State

• Name: Community → one Name
• Members: Community → set Users
• Moderators: Community → set Users
• Banned: Community → set Users
• Content: Community → set Item

Actions

• join(u: User, c: Community)
• leave(u: User, c: Community)
• create(u: User, n: Name): Community
• moderate(m: User, c: Community)
• unmoderate(m: User, c: Community)
• ban(u: User, c: Community)
• unban(u: User, c: Community)

Briefing [Item, App]

State

• Timeframe: Briefing → one Duration
• Content: Briefing → set Item
• LastVisited: App → one Date

Actions

• visit(a: App, d: Date)
• create(c: Set<Content>): Briefing
• modify(b: Briefing, t: Duration)

Feed [Item]

State

• LastRefreshed: Feed → one Date
• Pages: Feed → set Pages
• Content: Page → set Items
• Settings: Feed → one FeedSettings

Actions

• create(c: Content): Feed
• modify(f: Feed, s: FeedSettings)
• changePage(f: Feed, p: Page)

Concept Map