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


In this chapter, we discussed how to prepare the deployment of our Hibernate application in the EJB and Spring context. Enterprise application deployment is not always an easy task. However, we identified the things that you should keep in mind when deploying in a container. You will need to use the configuration files that are recognized by the containers and application servers, such as persistence.xml. Also, you should delegate the task of resource management to the container or the application server. For example, it's always a good idea to let the container manage database connection pools and just access it as a data source. Transaction management is also another concern that is best left to the container.

Both EJB and Spring do a good job at providing a runtime context to simplify the deployment and management of your runtime application.

We discussed how to write an EJB class that uses the JPA entity manager and how transactions are managed in the EJB context. We also discussed...