Spring Data JPA Tutorial

This page contains a list of Spring Data JPA tutorials and examples. The goal of the Spring Data JPA module is to significantly reduce the amount of boilerplate code required to implement data access layers for various persistence stores.

Application Architecture

In typical three-layer Spring application architecture, we create three layers - Controller, Service, and DAO/Repository layer. 

If we use JPA/Hibernate then write a lot of coding while implementing DAO/Repository layer.

Spring Data JPA provides a solution to reduce a lot of boilerplate code.

We can use Spring Data JPA to reduce the amount of boilerplate code required to implement the data access object (DAO) layer.

Spring Data JPA is not a JPA provider. It is a library/framework that adds an extra layer of abstraction on the top of our JPA provider (like Hibernate).
Spring Data JPA uses Hibernate as a default JPA provider.

Spring Data JPA: Getting Started Tutorials

Spring Data CrudRepository Tutorials

Spring Data JPA Query Method Tutorials

Spring Data JPA Pagination and Sorting

Spring Data JPA + Hibernate Mappings

Spring Data JPA Testing - Repository Layer Testing

API Mapping of Spring Data JPA and JPA

The SimpleJpaRepository class provides the default implementation of a Repository interface. SimpleJpaRepository class internally uses JPA EntityManager to map its methods with JPA EntityManager interface methods.

It is better to know which JPA EntityManager method is being called by methods of Repository interface (SimpleJpaRepository class ) of Spring Data JPA.

The JPA methods called by the main methods of the Repository interface of Spring Data JPA are shown below. 

Basic Spring Data JPA Flow

Once you completed reading above all articles then let's understand the basic flow at the time of accessing the database using Spring Data JPA is shown below.

Free Spring Boot Tutorial | Full In-depth Course | Learn Spring Boot in 10 Hours


Watch this course on YouTube at Spring Boot Tutorial | Fee 10 Hours Full Course

Comments

  1. Nice Tutorial. Really Informative.

    ReplyDelete
  2. Can you post sample working Java examples for below items

    1. Spring Data Java 8 Support
    2. Spring Data Annotations

    I went thru baeldung website but it's difficult to understand. There is no working code.

    ReplyDelete
    Replies
    1. Yes, i will let you know once i will work on it.

      Delete
  3. Could you please post examples of Native query and resultMapping using spring data jpa

    ReplyDelete

Post a Comment