Repositories

A class diagram. An interface, its base class and a user repository, beside a cache manager and the configuration.

             Class showcase

      ┌────────────────────────────┐
      │        «interface»         │
      │       Repository<T>        │
      ├────────────────────────────┤
      │ + findById(id: string): T  │
      │ + save(entity: T): void    │
      └────────────────────────────┘
                     △
                     ╎
                     ╎
     ┌──────────────────────────────┐
     │          «abstract»          │
     │      BaseRepository<T>       │
     ├──────────────────────────────┤
     │ # table: string              │
     ├──────────────────────────────┤
     │ + findById(id: string): T *  │
     │ + save(entity: T): void *    │
     │ # connection(): Db           │
     └──────────────────────────────┘
                     △
                     │
                     │
  ┌────────────────────────────────────┐
  │           UserRepository           │
  ├────────────────────────────────────┤
  │ + findById(id: string): User       │
  │ + save(entity: User): void         │
  │ + findByEmail(email: string): User │
  └────────────────────────────────────┘
                     ╎
                     ╎
                     ▼
  ┌────────────────────────────────────┐
  │            «singleton»             │
  │            CacheManager            │
  ├────────────────────────────────────┤
  │ - instance: CacheManager $         │
  ├────────────────────────────────────┤
  │ + getInstance(): CacheManager $    │
  │ + get(key: string): any            │
  │ + set(key: string, val: any): void │
  └────────────────────────────────────┘
                     │ 1
                     │
                     │ 1
          ┌────────────────────┐
          │      «entity»      │
          │     AppConfig      │
          ├────────────────────┤
          │ - env: string      │
          │ - version: string  │
          └────────────────────┘

Spec

JSON

{
  "type": "class",
  "title": "Class showcase",
  "classes": [
    {
      "id": "repo",
      "label": "Repository",
      "stereotype": "interface",
      "type_params": ["T"],
      "color": "blue",
      "methods": [
        {"visibility": "+", "text": "findById(id: string): T"},
        {"visibility": "+", "text": "save(entity: T): void"}
      ]
    },
    {
      "id": "baseRepo",
      "label": "BaseRepository",
      "stereotype": "abstract",
      "type_params": ["T"],
      "attributes": [{"visibility": "#", "text": "table: string"}],
      "methods": [
        {"visibility": "+", "text": "findById(id: string): T", "abstract": true},
        {"visibility": "+", "text": "save(entity: T): void", "abstract": true},
        {"visibility": "#", "text": "connection(): Db"}
      ]
    },
    {
      "id": "userRepo",
      "label": "UserRepository",
      "color": "green",
      "methods": [
        {"visibility": "+", "text": "findById(id: string): User"},
        {"visibility": "+", "text": "save(entity: User): void"},
        {"visibility": "+", "text": "findByEmail(email: string): User"}
      ]
    },
    {
      "id": "cache",
      "label": "CacheManager",
      "stereotype": "singleton",
      "color": "purple",
      "attributes": [{"visibility": "-", "text": "instance: CacheManager", "static": true}],
      "methods": [
        {"visibility": "+", "text": "getInstance(): CacheManager", "static": true},
        {"visibility": "+", "text": "get(key: string): any"},
        {"visibility": "+", "text": "set(key: string, val: any): void"}
      ]
    },
    {
      "id": "config",
      "label": "AppConfig",
      "stereotype": "entity",
      "attributes": [
        {"visibility": "-", "text": "env: string"},
        {"visibility": "-", "text": "version: string"}
      ]
    }
  ],
  "relations": [
    {
      "id": "r-baseRepo-repo",
      "from": "baseRepo",
      "to": "repo",
      "kind": "realization",
      "color": "blue"
    },
    {"id": "r-userRepo-baseRepo", "from": "userRepo", "to": "baseRepo", "kind": "inheritance"},
    {
      "id": "r-userRepo-cache",
      "from": "userRepo",
      "to": "cache",
      "kind": "dependency",
      "color": "red"
    },
    {
      "id": "r-cache-config",
      "from": "cache",
      "to": "config",
      "kind": "association",
      "from_card": "1",
      "to_card": "1"
    }
  ]
}

Draw it yourself

diago render repositories.json > repositories.svg

Open it in the playground to edit it in your browser.