What are some examples of the data mapper pattern?

Can you explain the data mapper pattern and provide some examples?

The data mapper pattern is a design pattern that separates the in-memory objects from the database. It allows for a clean separation of concerns. For example, in a web application, you might have a User class that represents a user in your application, and a UserMapper class that handles the database operations for that user.

Can you give me a specific example of how it works?

Sure! Let's say you have a User class with properties like name and email. The UserMapper would have methods like findById to retrieve a user from the database and save to store a user object back to the database.

What are the benefits of using the data mapper pattern?

The main benefits include improved separation of concerns, easier testing, and the ability to change the database layer without affecting the domain model.