Data Access Layer with Dapper - SOLID & Clean Code

This repository implements a data access layer for a scalable and maintainable application using Dapper as the ORM. The code follows SOLID principles and Clean Code practices to ensure high code quality, flexibility, and ease of maintenance. It uses the Repository Pattern for efficient data management and separation of concerns.

Features

• Dapper ORM: Lightweight and efficient object-relational mapper (ORM) for interacting with the database.
• SOLID Principles: Follows the five SOLID principles for clean, maintainable, and testable code.
• Repository Pattern: Encapsulates data access logic and abstracts it from business logic, making the application more modular.
• Clean Code: Ensures code readability, simplicity, and ease of understanding.
• Separation of Concerns: Keeps business logic, data access, and presentation layers separate for better maintainability.
• Scalability: Designed for easy extension as the application grows.

Architecture

SOLID Principles Applied

• Single Responsibility Principle (SRP): Each class in the repository has one responsibility, such as handling data access or mapping entities.
• Open/Closed Principle (OCP): The system is open for extension but closed for modification. You can add new functionality without modifying existing code.
• Liskov Substitution Principle (LSP): Derived classes can be substituted for their base classes without altering the correctness of the program.
• Interface Segregation Principle (ISP): Interfaces are split into smaller, more specific interfaces that are easier to implement and understand.
• Dependency Inversion Principle (DIP): High-level modules do not depend on low-level modules but on abstractions. The repository layer is abstracted from concrete implementations.

Clean Code Principles

• Meaningful Names: Variables, classes, and methods are named descriptively to convey the purpose of the code.
• Small Functions/Methods: Each function does one thing and does it well. Functions are kept small and concise.
• Avoiding Duplication: Code duplication is minimized, and reusable components are abstracted.
• Commenting & Documentation: Comments are used where necessary to explain complex logic or intentions. However, code is written clearly enough to reduce unnecessary comments.
• Error Handling: Proper error handling mechanisms are in place to ensure the application runs smoothly and errors are logged appropriately.

Repository Pattern

The Repository Pattern is used to provide an abstraction layer between the application's business logic and data access logic. It simplifies interactions with the database and allows easier testing and maintenance.