How to map the latest child of a parent entity using Hibernate JoinFormula

Introduction In this article, I’m going to explain how the Hibernate JoinFormula annotation works and how you can use it to map the latest child of a parent entity. As previously explained, the @JoinFormula is a very awesome annotation which allows you to customize the way you join entities beyond JPA @JoinColumn capabilities.

How to map calculated properties with Hibernate @Generated annotation

Introduction As I explained in this previous article, you can map calculated properties using Hibernate @Formula, and the value is generated at query time. In this post, you’ll see how you can calculate an entity property at INSERT or UPDATE time.

The best way to map a Composite Primary Key with JPA and Hibernate

Introduction One of my readers asked me to help him map a Composite Primary Key using JPA and Hibernate. Because this is a recurrent question, I decided to write a blog post in which I describe this mapping is more detail.

The best way to map a @OneToOne relationship with JPA and Hibernate

Introduction There are many ways you can map a one-to-one relationship with Hibernate. In this post, I’m going to demonstrate which mapping is the most efficient one from a database perspective.

How to map JSON objects using generic Hibernate Types

Introduction In this article, we are going to see how you can map a JSON column to a JPA entity attribute using the Hibernate Types open-source project. While you can create your own custom Hibernate Types, for mapping JSON column types on Oracle, SQL Server, PostgreSQL, or MySQL, you don’t need to implement your own Hibernate Type since the Hibernate Types project already offers this functionality.