High-Performance Java Persistence Newsletter, Issue 2

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.

High-Performance Java Persistence Newsletter, Issue 1

Introduction I started my newsletter in November 2015, and every time I was publishing a new article, I would send it to my newsletter subscribers as well. This year, I decided to change the format of my newsletter. Instead of creating a new issue for every article, the newsletter will now contain links to the best articles I read over the past two weeks.

Multidimensional array mapping with JPA and Hibernate

Introduction In this article, I’m going to present the best way to map a Java multidimensional array when using JPA and Hibernate. While one-dimensional array types have long been supported by the Hibernate Types open-source project, starting with the 2.9 release, you can now persist multidimensional array entity attributes with JPA and Hibernate.

How to map Oracle JSON columns using JPA and Hibernate

Introduction In this article, we are going to see how to map the Oracle JSON column storage types when using JPA and Hibernate. My hibernate-types project has long been supporting JSON for PostgreSQL, and MySQL. However, while developing my new and awesome High-Performance SQL training, I realized that the current implementation does not handle Oracle JSON column types properly. Luckily, the fix was easy, and starting with the 2.7.0 version you can now persist and fetch JSON attributes on Oracle using JPA and Hibernate.

How to customize the JSON Serializer used by Hibernate-Types

Introduction As already explained, the hibernate-types open-source project allows you to map JSON, ARRAY, PostgreSQL ENUM types and provides a simple way of adding immutable Hibernate Types. After adding support for customizing the Jackson ObjectMapper, the next most-wanted issue was to provide a way to customize the JSON serializing mechanism. In this article, you are going to see how you can customize the JSON serializer using hibernate-types.

How to customize the Jackson ObjectMapper used by Hibernate-Types

Introduction As already explained, the hibernate-types open-source project allows you to map JSON, ARRAY when using JPA and Hibernate. Since I launched this project, one of the most wanted feature was to add support for customizing the underlying Jackson ObjectMapper, and since version 2.1.1, this can be done either declaratively or programmatically. In this article, you are going to see how do customize the ObjectMapper when using the hibernate-types project.