Book Image

Mastering Hibernate

By : Ramin Rad, Koushik Srinivas Kothagal
Book Image

Mastering Hibernate

By: Ramin Rad, Koushik Srinivas Kothagal

Overview of this book

Hibernate has been so successful since its inception that it even influenced the Java Enterprise Edition specification in that the Java Persistence API was dramatically changed to do it the Hibernate way. Hibernate is the tool that solves the complex problem of Object Relational Mapping. It can be used in both Java Enterprise applications as well as .Net applications. Additionally, it can be used for both SQL and NoSQL data stores. Some developers learn the basics of Hibernate and hit the ground quickly. But when demands go beyond the basics, they take a reactive approach instead of learning the fundamentals and core concepts. However, the secret to success for any good developer is knowing and understanding the tools at your disposal. It’s time to learn about your tool to use it better This book first explores the internals of Hibernate by discussing what occurs inside a Hibernate session and how Entities are managed. Then, we cover core topics such as mapping, querying, caching, and we demonstrate how to use a wide range of very useful annotations. Additionally, you will learn how to create event listeners or interceptors utilizing the improved architecture in the latest version of Hibernate.
Table of Contents (16 chapters)

Chapter 6. Events, Interceptors, and Envers

In this chapter, we will take a look at Hibernate events, interceptors, and envers. Additionally, to understand the internals of Hibernate as they relate to some of the concepts in this chapter, we will also cover the concept of a Java Service Provider Interface (SPI) and its use in Hibernate. Events and interceptors can be triggered when we load or store entities in the persistence context. In this chapter, you will see how you can use them to implement a functionality similar to DB triggers and other event-based functions. Furthermore, this chapter covers entity auditing (envers), which implements entity revision management to automatically store historical snapshots of entities and also provides auditing mechanism. This is useful for implementing an audit mechanism in your application and allows you to implement a rollback mechanism.

  • Services:

    • Service loader

    • Service registry

    • OSGi model

  • Events:

    • Event listener

    • Registering listeners

  • Interceptors:

    • Database...