As a Java developer, you can choose between various frameworks to store your data in a relational database. If you’re looking for an object-relational mapping framework that follows DDD and is not very complex but still handles most of the standard CRUD operations for you, you should try Spring Data JDBC. In his recent Expert…
One of the most common recommendations to improve the performance of your persistence layer is to use JOIN FETCH clauses or EntityGraphs to fetch required associations when loading an entity. I entirely agree with these recommendations, and we discuss this in great detail in the Hibernate Performance Tuning course in the Persistence Hub. But if…
Some table models don’t enforce their foreign key references by a foreign key constraint. This is a bad practice that often leads to foreign key references that point to non-existing records. When Hibernate tries to resolve such a broken reference, it throws an EntityNotFoundException. You should, therefore, define a foreign key constraint for every foreign…
If you tried Hibernate 6, you might have recognized the new @Incubating annotation. The Hibernate team introduces it to tell users about new APIs and interfaces that might still change. That’s a great addition because most developers expect new APIs and features to be stable after they are part of a final release. In general, that…
Hibernate implements JPA’s standardized constructor expressions and @SqlResultSetMappings to map the results of your queries. And it also supports proprietary ResultTransformers. They provide a powerful and flexible way to map the result of your JPQL, Criteria, and native SQL query to a specific object structure. This can be entity or DTO objects, java.util.List or java.util.Map…