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Clean Architecture - Coggle Diagram

- - - - Features
        
        Ex: TodoItems
        
        Commands
        
        Create Todo Item
        
        Update Todo Item
        
        Delete Todo Item
        
        Queries
        
        GetTodoItem
        
        IRequest
        
        Request Handler
      - Common
        
        Behavior
        
        Contains
        
        RequestValidationBehavior
        
        uses Fluent Validation
        
        cross field validation
        
        complex than Data Anotations
        
        RequestPerformanceBehavior
        
        RequestLogger
        
        depends on ( Injected (not implementation) to avoid dependency with EF)
        
        ILogger - .Net Core Logger
        
        EF Core User Service
        
        EF Identity Service
        
        Mapping
        
        MappingProfile
        
        Helper class
        
        assembly convention based mapping
        
        use
        
        2 more items...
        
        two ways
        
        convention based mapping
        
        TodoItem
        
        Custom Mapping
        
        EmployeeDetailVm
        
        Interface - IMapFrom
        
        C# 8 Default Interface methods
        
        default interface methods
        
        default interface methods
        
        You Tube
        
        Testing
        
        Mapping Tests
  - - - MediateR
        
        Ability to attach additional behaviors
        
        Logging
        
        Validation
        
        Caching
        
        Authorisation
      - App Layer series of commands and queries requets
    - - Not used since EF Core is used
      - If you need to use , then declare IRepository here and implement in Infrastructure
    - - Store all items and do not share
        
        for ex
        
        get Todo's contains
        
        GetTodoQuery
        
        3 DTO - Todo DTO
        Todo Item DTO ( child objects)
        Priority DTO
        
        VM
- - - - Defn
        
        EF Core stuff stored here
        
        Advantages
        
        EF Core insulates code from DB changes
        
        DBContext acts as Unit of work
        
        DB Set acts as a repository
        
        has features for Unit Testing without repositoriries
    - - DateTime
  - - - Only exception is web project, but it has dependency only in Start up
        If a controller has , is a Red Flag
- - - - complex than a simple primitive type
        
        use for instanace not a simple String like Ad object , contains domain and name
      - Owned Entity Type
        
        Owned-Entity_MSDN
    - - Create custom exceptions - Easy track
    - - Use Private Set and initialize all collecctions (nested objects) to avoid null error
  - - - Avoid clutoring
        Create dependency on EF Core
        Instead use Fluent Config API in Infrastructure layer, more powerful
      - EF Core don't use Data Annotations for validation and use only for Referential int, so use Fluent Validators it is more powerful
- - - - Api Controller
        
        Injects MediatR Property Injection
      - gets VM
        
        Add prop Allow Create => enable/disable buttons
    - - Common Exceptin Handler Middleware