Hands-On Full Stack Development with Spring Boot 2 and React - Second Edition

Creating CRUD repositories

The Spring Boot Data JPA provides a CrudRepository interface for CRUD operations. It provides CRUD functionalities to our entity class.

We will now create our repository in the domain package as follows:

1. Create a new class called CarRepository in the domain package and modify the file according to the following code snippet:

      package com.packt.cardatabase.domain;      import org.springframework.data.repository.CrudRepository;

      public interface CarRepository extends CrudRepository <Car, Long> {      }

Our CarRepository now extends the Spring Boot JPA CrudRepository interface. The <Car, Long> type arguments define that this is the repository for the Car entity class and the type of the ID field is Long.

CrudRepository provides ...