This is a complete and practical guide with full project code about Repository Pattern. Even if the code in this is written in Python, these ideas are general programming concepts and design patterns that can be implemented in almost the same way in any OO Language like C++, Java, etc. This is a Zero-To-Hero guide where we will learn everything about the Repository Pattern including advanced stuff and other Design Patterns. Enjoy reading!
{ This guide was written without any assistance from any AI Tools }
The main idea of this pattern is to abstract the underlying data persistence code. This is great because it allows easier testing and maintenance. Besides that it provides a nice interface with, most commonly, 5 methods that can do anything you need.
Practical Demonstration
I will show you what i mean in practice. If you don’t understand something, keep reading, i will explain everything you need to know in this guide. I will also show you some awesome ideas of how you can combine this pattern with other patterns to create a nice data persistence system.
Creating the Structure + Interface
For this demonstration, we will create a repository of Books objects. First of all, we will create the project structure, the book object and the interface of our repository.