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 post a comment below. Question: Some of our entity attributes are annotated with @Column(length=50), others with @Size(max=50) and others with both of these annotations….
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 post a comment below. Question: I’m using BeanValidation to validate my entities automatically before they get persisted and updated. I defined different ValidationGroups for…
The most efficient way to improve the performance of a database query is to avoid it by retrieving the data from a local cache. That’s why Hibernate offers 3 different caches: The 1st level cache contains all entities loaded and created within the current session. The 2nd level cache is a shared, session-independent cache for…
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 post a comment below. Question: In a comment on one of my previous articles, I was asked the following question: What’s the best way…
Derived queries are very comfortable to use as long as the queries are not too complicated. But as soon as you use more than 2-3 query parameters or need to define multiple joins to other entities, you need a more flexible approach. In these situations, you better use Spring Data JPA’s @Query annotation to specify…
