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)

Summary


This chapter presented the foundation of object-relational mapping. We discussed the definition of an owner entity. We also defined value types and showed you how to map these properly in the entity table or a separate table. You also learned the concepts around ID generation and how to N generate ID using JPA or Hibernate strategies. You combined the value types and ID generation to discuss composite IDs.

Furthermore, we discussed associations and their cardinalities, one-to-one, many-to-one, and many-to-many, and showed you how to map self-referencing tables. Later we showed how to instruct Hibernate to perform cascade operations on associated entities.

We also covered inheritance and how Hibernate handles them. We showed you various strategies that can be used to handle inheritance. Finally, we showed you how to map enumerated types as well as create your own custom data type mapping.

In the next chapter, we will discuss more annotations to support more advanced mapping as well as...