Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: I want to map the latest element of a to-many association as an entity attribute. How can I map…
If there is one thing that’s often criticized about JPA and Hibernate, it’s that it sometimes execute more queries than you expected. And I’m not talking about 1 or 2 additional queries. I’m talking about dozens or even hundreds of them. The worst thing about it is that you don’t recognize that problem if you…
Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: Updating both ends of a bidirectional association is an error-prone task. What’s the best way to implement it in…
Like all object-oriented programing languages, Java supports the fundamental concepts of inheritance and composition. There is an important difference between both concepts. Inheritance enables you to model an is-a association between two classes by extending a superclass. Composition models a has-a association by referencing another class in an instance variable. You can use both concepts…
Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: JPA 2.2 didn’t add support for java.time.Duration. How can I map an attribute of that type with JPA?
