SchoolManagerModel

Created by Kornél Makári

Project Structure

There are 5 namespaces:

• SchoolManagerModel.Entities: Objects and entities stored in the database.
• SchoolManagerModel.Exceptions: Implemented exceptions.
• SchoolManagerModel.Managers: Business logic with persistence through interfaces.
• SchoolManagerModel.Persistence: Data storage.

Model

Manager Classes

There are 5 manager classes that contain the business logic:

• ClassManager
• LoginManager
• SubjectManager
• TeacherManager
• UserManager

Persistence

Entity Framework is used for data storage, but you can easily use any other technology.

Data Storage Interfaces

Manager classes are not dependent on Entity Framework. There are 4 handler interfaces:

• IAsyncClassDataHandler
• IAsyncSubjectDataHandler
• IAsyncTeacherDataHandler
• IAsyncUserDataHandler

If you want to use, for example, Dapper, you need to implement these interfaces.

Entity Framework

Entity Framework-specific classes use these interfaces.

Entity Framework classes:

• ClassDatabase
• SubjectDatabase
• TeacherDatabase
• UserDatabase

Database

Persistence is implemented with a local SQLite database. If you want to use another database engine, you need to install the engine-specific NuGet package and create a class based on SchoolDbContextBase.

SchoolDbContextBase is an abstract class, and you need to override two methods:

• OnConfiguring(DbContextOptionsBuilder optionsBuilder): To configure the database with the specific engine.
• OnModelCreating(ModelBuilder modelBuilder): To seed data (e.g., create accounts).