How do you get the primary key values in your application? Do you use natural keys or do you generate technical IDs? I prefer to generate simple, numerical, technical IDs like you can see in the following code snippet instead of using natural keys which often require the combination of multiple attributes. @Id private Long…
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 you like me to answer, please leave a comment below. Question: How can I map a read-only database view with Hibernate?
Most Java EE applications are stateless and there are good reasons for it. But not all user interactions can be implemented in that way. Sometimes you need to model a conversation that consists of multiple steps, like the typical shopping cart or complex update operations. Doing this with JPA 2.0 always felt a little bit…
Java 8 brought lots of great features and one of the most important and most anticipated ones was the new Date and Time API. There were lots of issues with the old API and I won’t get into any details on why we needed a new one. I’m sure you had to struggle often enough…
If you are a regular reader of this blog, you know that I wrote several articles about features and enhancements introduced with JPA 2.1. One thing that was missing, was a general overview about all the changes. So here it is 🙂The following paragraphs provide a description of the 12 features and enhancements introduced with…