The best way to replace the deprecated GenericGenerator

Introduction In this article, I’m going to show you the best way to replace the deprecated @GenericGenerator when upgrading your application to Hibernate 7.

The best way to clean up test data with Spring and Hibernate

Introduction In this article, I’m going to show you the best way to clean up test data when using Spring and Hibernate. While it’s very common to use the @DataJpaTest annotation when implementing integration tests, in this blog post, you will see why you are better off avoiding using this annotation.

How to map the Oracle TIMESTAMP WITH TIME ZONE with JPA

Introduction In this article, I’m going to explain how to map the Oracle TIMESTAMP WITH TIME ZONE with JPA and Hibernate. While the DATE and TIMESTAMP column types are suitable for mapping the LocalDateTime, the TIMESTAMP WITH TIME ZONE column type allows us to map both the ZonedDateTime and OffsetDateTime.

High-Performance Java Persistence Newsletter, Issue 69

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system using Java.

Avoid using Set for bidirectional JPA OneToMany collections

Introduction In this article, we are going to see why there is no benefit in using the Set collection type when mapping a bidirectional JPA OneToMany association. While the @OneToMany annotation can be used to map both unidirectional and bidirectional associations, as I explained this article, you should avoid the unidirectional mapping since it can lead to very inefficient SQL statements.

JTA Transaction Type

Introduction In this article, we are going to analyze how the JTA transaction type works. Since this is the default transaction type when using Jakarta EE or Java EE applications, it’s very important to understand how JTA transactions work, especially since Spring Boot or Spring applications use RESOURCE_LOCAL transactions instead.

High-Performance Java Persistence Newsletter, Issue 68

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system using Java.

RESOURCE_LOCAL JPA Transaction Type

Introduction In this article, we are going to analyze how the RESOURCE_LOCAL JPA transaction type works. Since this is the default transaction type when using Spring Boot or Spring Data JPA, it’s very important to understand how transactions are managed when using the RESOURCE_LOCAL mode.

High-Performance Java Persistence Newsletter, Issue 67

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system using Java.

A beginner’s guide to Spring Data Envers

Introduction In this article, we are going to investigate the Spring Data Envers project and see how to get the best out of it. Hibernate Envers is a Hibernate ORM extension that allows us to track entity changes with almost no changes required on the application part. Just like Envers plugs into Hibernate ORM in order to build an audit log for entity changes, the Spring Data Envers project plugs into Spring Data JPA to provide audit logging capabilities to JPA Repositories.