ByThorben JanssenWhen people are new to JPA, Hibernate or EclipseLink, they are often confused about the difference between them and which one they should use in their project. If you’re one of them, don’t worry. It’s a lot easier than it seems. Let’s take a look at the JPA specification first.
ByThorben JanssenHibernate is a very popular implementation of the Java Persistence API (JPA) standard. It acts as an additional layer on top of JDBC and enables you to implement a database-independent persistence layer. Hibernate provides an object-relational mapping implementation that maps your database records to Java objects and generates the required SQL statements to replicate all operations to the database. Let’s…
ByThorben JanssenJPA and Hibernate provide different methods to persist new and to update existing entities. You can choose between JPA’s persist and merge and Hibernate’s save and update methods. It seems like there are 2 pairs of 2 methods that do the same. You can use the methods persist and save to store a new entity…
ByThorben JanssenJPA 2.2 was just a small maintenance release, but it nevertheless brought some interesting changes. You probably already know about some of the new features, like the retrieval of a query result as a Stream or the support for classes of the Date and Time API. These are the most popular changes but not the…
ByThorben JanssenAs expected, the recent release of the JPA 2.2 specification introduced official support for some of the classes of the Date and Time API. Before that, you had to rely on proprietary features, like the ones introduced in Hibernate 5, or you had to provide an AttributeConverter to implement the mapping. Let’s take a closer…