JPA and Hibernate allow you to define associations between entities with just a few annotations, and you don’t have to care about the underlying table model in the database. Even join tables for many-to-many associations are hidden behind a @JoinTable annotation, and you don’t need to model the additional table as an entity. That changes…
Hibernate 6 has been released for a while, and the latest Spring Data JPA version includes it as a dependency. So, it’s no surprise that more and more developers want to migrate their applications to the latest Hibernate version. As you’re reading this article, you’re probably one of them. And you might ask yourself what…
I often get asked if I can recommend any object mapping library to map entity objects to DTOs. And you can find several discussions and articles about that on google. But instead of asking which library you should use, you should first ask yourself if you should map an entity to a DTO at all….
When most developers design their table and entity models, they create tables that only use basic column types and map these to basic entity attributes. Even though these are the most commonly used types, they are not the only ones supported by modern relational databases and Hibernate. You can also use composite, JSON, and XML…
Most databases offer many proprietary features besides the known SQL standard. One example is PostgreSQL’s JSONB data type which allows you to store JSON documents efficiently in a database column. You could, of course, store the JSON document in a text column. That column type is part of the SQL standard. Hibernate and all other…