ByThorben JanssenIn some applications, you don’t want to or are not allowed to remove a record from the database permanently. But you still need to remove or hide records which are no longer active. One example could be a user account you want to keep because it is linked to other business objects that are still…
ByThorben JanssenJPA and Hibernate support a set of hints that you can use to provide additional information to your persistence provider to influence the execution of a query. You can use them for lots of different things, like setting a timeout for your query, using an entity graph, or defining the caching of a query result….
ByThorben JanssenBased on most discussions online and at conferences, there seem to be 2 kinds of projects that use Hibernate for their persistence layer: So, what’s the difference between these projects? Are the projects in the 2nd group more complex or have higher performance requirements? No, based on my consulting projects, that’s not the case. On…
ByThorben JanssenInheritance is one of the key concepts in Java. So, it’s no surprise that most developers want to use it in their domain model. Unfortunately, the relational table model doesn’t know this concept. So, Hibernate, or any other JPA implementation, has to apply a mapping strategy to map your inheritance hierarchy to one or more…
ByThorben JanssenWorking with timestamps with timezone information has always been a struggle. Since Java 8 introduced the Date and Time API, OffsetDateTime and ZonedDateTime have become the most obvious and commonly used types to model a timestamp with timezone information. And you might expect that choosing one of them should be the only thing you need…