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)

Services


The concept of services is not new in Java. It is a fundamental concept that has been around since JDK 1.3, which is known as the Java extension mechanism. The idea is to make your application more modular, extensible, and pluggable, where you, as the developer, may provide the default behavior and also implement the capability to extend your application beyond the defaults and let the behavior change at deploy time or, perhaps, even at runtime. If you are familiar with the Spring framework, the concept of services is very much like dependency injection and inversion of control.

As you may already know, a Service is a published contract, a set of operations with a well-defined interface. In Java, a service can be implemented using an interface or an abstract class. A service provider offers the concrete implementation of the service. As a Java developer, you use or implement services and providers every day, and you may not actively think about it. JDBC is a good example. The API...