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 JPA Tutorial - Getting Started // Popular

• How to use Spring Data JPA in Spring Boot Project // Popular

• Spring Data JPA Tutorial - Java-Based Configuration

• Spring Data JPA - Query Creation from Method Names // Popular

• Spring Data JPA - Creating Database Queries With Named Queries

• Spring Data JPA @NamedNativeQuery and @NamedNativeQueries Example

• Spring Data JPA - @NamedQuery Example

• Spring Data JPA - @NamedQueries Example
  

• Spring Data JPA - Creating Database Queries using @Query Annotation 

• Spring Data JPA - Auditing with Spring Boot 2 and MySQL Example  // Popular

• Spring Data JPA - Working with Multiple Datasources using Spring Boot

• Spring @Repository Annotation 

• Spring MVC 5 + Spring Data JPA + Hibernate 5 + JSP + MySQL Tutorial 

• Spring Data REST Tutorial

• Spring Boot CRUD Tutorial with Spring MVC, Spring Data JPA, Thymeleaf, Hibernate, MySQL

• Spring Data JPA CRUD Example Tutorial // Popular

Spring Data CrudRepository Tutorials

• Spring Data CrudRepository - save() Method

• Spring Data CrudRepository - saveAll() Method

• Spring Data CrudRepository - findById() Method

• Spring Data CrudRepository - findAll() Method

• Spring Data CrudRepository - deleteById() Method

• Spring Data CrudRepository - delete() Method

• Spring Data CrudRepository - deleteAll() Method

• Spring Data CrudRepository - existsById() Method

• Spring Data CrudRepository - count() Method

Spring Data JPA Query Method Tutorials

• Spring Data JPA Query Method - Multiple Fields

• Spring Data JPA Query Method - Distinct

• Spring Data JPA Query Method - Greater Than

• Spring Data JPA Query Method - Less Than

• Spring Data JPA Query Method - Between

• Spring Data JPA Query Method - Like

• Spring Data JPA Query Method - IN Clause

Spring Data JPA Pagination and Sorting

• Spring Data JPA - Pagination Example

• Spring Data JPA - Sorting Example

• Spring Data JPA - Sorting with Multiple Fields or Columns

• Spring Data JPA - Pagination and Sorting Example

• Pagination and Sorting with Spring Boot, ThymeLeaf, Spring Data JPA, Hibernate, MySQL

• Pagination and Sorting using Spring Data JPA - PagingAndSortingRepository 

Spring Data JPA + Hibernate Mappings

• Spring Data JPA One to One Unidirectional Mapping

• Spring Data JPA One to One Bidirectional Mapping

• Spring Data JPA One to Many Unidirectional Mapping

• Spring Data JPA One to Many Bidirectional Mapping

• Spring Data JPA Many to Many Unidirectional Mapping

• Spring Data JPA Many to Many Bidirectional Mapping

Spring Data JPA Testing - Repository Layer Testing

• Spring Data JPA Repository Testing using Spring Boot @DataJpaTest // Popular

• Spring Boot Testing - Data Access Layer Integration Testing using Testcontainers

• CRUD JUnit Tests for Spring Data JPA - Testing Repository Layer // Popular

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.

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