The best way to clean up test data with Spring and Hibernate
Introduction In this article, I’m going to show you the best way to clean up test data when using Spring and Hibernate. While it’s very common to use the @DataJpaTest annotation when implementing integration tests, in this blog post, you will see why you are better off avoiding using this annotation.
How to use LazyConnectionDataSourceProxy with Spring Data JPA
Introduction In this article, we are going to see how we can use the LazyConnectionDataSourceProxy with Spring Data JPA to acquire the database connection as late as possible and, therefore, reduce transaction response time. For an introduction to how Spring transactions manage database connections, check out this article as well.
Keyset Pagination with Spring Data WindowIterator
Introduction In this article, we are going to see how we can generate Keyset Pagination queries with the Spring Data WindowIterator utility. This is an alternative to the Blaze Persistence solution I documented in this article.
A beginner’s guide to Spring Data Envers
Introduction In this article, we are going to investigate the Spring Data Envers project and see how to get the best out of it. Hibernate Envers is a Hibernate ORM extension that allows us to track entity changes with almost no changes required on the application part. Just like Envers plugs into Hibernate ORM in order to build an audit log for entity changes, the Spring Data Envers project plugs into Spring Data JPA to provide audit logging capabilities to JPA Repositories.
Spring Load-Time Weaving
Introduction In this article, we are going to see how Spring load-time weaving works so that you can apply the Hibernate bytecode enhancement mechanism at runtime. Traditionally, the bytecode enhancement mechanism is applied when the project is built using a Maven or Gradle plugin. For more details about the build-time approach, check out this article.
Table partitioning with Spring and Hibernate
Introduction In this article, we are going to see how we can implement a table partitioning solution when using Spring and Hibernate. The goal of table partitioning is to split a large table into multiple smaller partition tables so that the associated table and index records can fit into the in-memory Buffer Pool, therefore allowing a more efficient seek or scan.
The best way to use Spring Data JPA Stream methods
Introduction In this article, we are going to see what is the best way to use Spring Data JPA Stream query methods. When having to fetch a larger result set, the advantage of using a Java Stream is that the query result set could be fetched progressively instead of getting all the data at once.
How to fetch multiple JPA collections with Blaze Persistence MULTISET
Introduction In this article, we are going to see how we can fetch multiple JPA entity collections without generating an implicit Cartesian Product with the MULTISET strategy offered by the Blaze Persistence open-source project. The MULTISET fetch strategy is inspired by the MULTISET operator offered by jOOQ. If you are not familiar with the MULTISET operator, then check out this article first, in which I explain why this jOOQ feature is truly revolutionary.
Spring Data Query By Example
Introduction In this article, we are going to see how the Spring Data JPA Query By Example (QBE) feature works, when you should use it, and what limitations it has. While Spring Data JPA already provides a wide range of options to query data: query methods or the @Query annotation Spring Data JPA Specification custom Repository query methods The Spring Data Query By Example feature is meant to offer a way to decouple the data filtering logic from the query processing engine so that you can allow the data access layer clients… Read More
The best way to validate the DDL schema with Spring and Hibernate
Introduction In this article, we are going to see what is the best way to validate the DDL schema and the JPA entity mappings when using Spring and Hibernate. I decided to write this article after reading this Tweet:
