Hibernate Naming Under Spring Boot and Embedded JPA Entities

Hibernate Naming Under Spring Boot and Embedded JPA Entities

I encountered a little gotcha when setting up multiple Embedded JPA entities while developing a module for my Spring Core online course. In this video, I show you a simple solution to support multiple Embedded JPA Entities without additional JPA annotations to customize the default column names.

You can learn more about my courses on the Spring Framework here: http://bit.ly/1RPhI2A

#spring boot #spring #jpa #hibernate

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Hibernate Naming Under Spring Boot and Embedded JPA Entities

Hibernate Naming Under Spring Boot and Embedded JPA Entities

Hibernate Naming Under Spring Boot and Embedded JPA Entities

I encountered a little gotcha when setting up multiple Embedded JPA entities while developing a module for my Spring Core online course. In this video, I show you a simple solution to support multiple Embedded JPA Entities without additional JPA annotations to customize the default column names.

You can learn more about my courses on the Spring Framework here: http://bit.ly/1RPhI2A

#spring boot #spring #jpa #hibernate

Were  Joyce

Were Joyce

1620751200

How to Configure the Interceptor With Spring Boot Application

In the video in this article, we take a closer look at how to configure the interceptor with the Spring Boot application! Let’s take a look!

#spring boot #spring boot tutorial #interceptor #interceptors #spring boot interceptor #spring boot tutorial for beginners

Were  Joyce

Were Joyce

1620720872

Spring vs Spring BooDifference Between Spring and Spring Boot

As an extension of the Spring Framework, Spring Boot is widely used to make development on Spring faster, more efficient and convenient. In this article, we will look at some of the parameters were using Spring Boot can drastically reduce the time and effort required in application development.

What is Spring?

Spring Boot

Difference between Spring and Spring Boot

Advantages of Spring Boot over Spring

Conclusion

#full stack development #spring #spring and spring boot #spring boot

I Dev

1608437416

Spring Boot JPA + H2 example: Build a CRUD Rest APIs

In this tutorial, we’re gonna build a Spring Boot Rest CRUD API example with Maven that use Spring Data JPA to interact with H2 database. You’ll know:

  • How to configure Spring Data, JPA, Hibernate to work with Database
  • How to define Data Models and Repository interfaces
  • Way to create Spring Rest Controller to process HTTP requests
  • Way to use Spring Data JPA to interact with H2 Database

For more details, please visit:
https://bezkoder.com/spring-boot-jpa-h2-example/

Overview of Spring Boot JPA + H2 example

We will build a Spring Boot Rest Apis using Spring Data JPA with H2 Database for a Tutorial application in that:

  • Each Tutotial has id, title, description, published status.
  • Apis help to create, retrieve, update, delete Tutorials.
  • Apis also support custom finder methods such as find by published status or by title.

These are APIs that we need to provide:

  • POST /api/tutorials: create new Tutorial
  • GET /api/tutorials: retrieve all Tutorials
  • GET /api/tutorials/[id]: retrieve a Tutorial by :id
  • PUT /api/tutorials/[id]: update a Tutorial by :id
  • DELETE /api/tutorials/[id]: delete a Tutorial by :id
  • DELETE /api/tutorials: delete all Tutorials
  • GET /api/tutorials/published: find all published Tutorials
  • GET /api/tutorials?title=[keyword]: find all Tutorials which title contains keyword

– We make CRUD operations & finder methods with Spring Data JPA’s JpaRepository.
– The database will be H2 Database (in memory or on disk) by configuring project dependency & datasource.

Technology

  • Java 8
  • Spring Boot 2.4 (with Spring Web MVC, Spring Data JPA)
  • H2 Database
  • Maven 3.6.1

Project Structure

spring-boot-jpa-h2-database-example-crud-project-structure

Let me explain it briefly.

Tutorial data model class corresponds to entity and table tutorials.
TutorialRepository is an interface that extends JpaRepository for CRUD methods and custom finder methods. It will be autowired in TutorialController.
TutorialController is a RestController which has request mapping methods for RESTful requests such as: getAllTutorials, createTutorial, updateTutorial, deleteTutorial, findByPublished
– Configuration for Spring Datasource, JPA & Hibernate in application.properties.
pom.xml contains dependencies for Spring Boot and H2 Database.

Source Code

For more details, implementation and Github, please visit:
https://bezkoder.com/spring-boot-jpa-h2-example/

Using other databases:
Spring JPA + PostgreSQL
Spring JPA + MySQL
Spring Data + MongoDB

If you want to add Pagination to this Spring project, you can find the instruction at:
Spring Boot Pagination & Filter example | Spring JPA, Pageable

To sort/order by multiple fields:
Spring Data JPA Sort/Order by multiple Columns | Spring Boot

Handle Exception for this Rest APIs is necessary:
Spring Boot @ControllerAdvice & @ExceptionHandler example
@RestControllerAdvice example in Spring Boot

Or way to write Unit Test for the JPA Repository:
Spring Boot Unit Test for JPA Repositiory with @DataJpaTest

#java #spring #spring-boot #h2 #spring-framework #jpa

Sigrid  Farrell

Sigrid Farrell

1621583280

Spring Data JPA + QueryDSL: Taking the Best From Both Worlds

An example of combining the two most powerful frameworks for building a maintainable and type-safe persistence layer; from Spring Data JPA we will take only CRUD operations and for all complex queries we will use QueryDSL.

You can find the full project on GitHub using this link. There is a simple SpringBoot application with configured MySQL data source and initial database structure described as a Flyway migration.

Here we will concentrate only on the building persistence layer. As we deal with the relational database we will rely on the JPA specification. Let’s take a simple entity model like Author/Book as an example:

#java #tutorial #spring boot #hibernate #jpa #spring data jpa #querydsl