Book Image

Spring Persistence with Hibernate

By : Ahmad Seddighi
Book Image

Spring Persistence with Hibernate

By: Ahmad Seddighi

Overview of this book

<p>Spring is the leading platform to build and run enterprise Java applications. Spring's Hibernate integration makes it easy to mix and match persistence methodologies simplifying your Hibernate applications. You can incorporate lots of Inversion of Control (IoC) convenience features to address many typical Hibernate integration issues, making this integration all the more favorable for your application. <br /><br />This easy-to-use book will turn the complex-sounding integration into a straightforward walk-through. Persistence is important for creating a data access-based transactions tier, central to financial, insurance, and banking applications. You will be able to enhance your applications using the most common, advanced, and optional features of Hibernate.<br /><br />This book starts with the philosophy and the brief history of persistence. It provides an introduction to how persistence frameworks and technologies came into the development scene and what problems they are aimed to solve.<br /><br />The book continues with a discussion about Hibernate as the most popular persistence framework in Java. First, you will learn how to get Hibernate and add it to a project and how to configure it before it can be used. Next, you will get an in-depth knowledge about Hibernate and understand the essential concepts behind persistence with Hibernate and more. When Hibernate has been fully discussed, you will get to know Spring as another popular framework in Java, and have a look at essential features of Spring and its added value for Hibernate-based projects. Finally the book will provide a comprehensive discussion about using Hibernate with Spring and the problems that are solved with Spring.</p>
Table of Contents (22 chapters)
Spring Persistence with Hibernate
Credits
About the Author
About the Reviewer
Preface
Index

Configuring Hibernate


As you saw in Chapter 3, you must configure Hibernate before you can use it. The configuration is represented by an object of type org.hibernate.Configuration. This object wraps all of the configuration settings and is used in the next step for building a SessionFactory object. (We'll discuss a useful strategy for creating the SessionFactory at the end of this chapter.) To configure Hibernate, you first need to instantiate a configuration object:

Configuration cfg = new Configuration();

The actual configuration settings can be divided into two parts:

  • Hibernate properties: These include all of the database-related properties that Hibernate should consider while connecting to the database, as we saw earlier.

  • Hibernate mappings: These are XML documents that define the mapping of the entity classes to the database tables. You'll see a lot more on Hibernate mappings in Chapter 5 and Chapter 6.

Once you have instantiated a Configuration object, there are two ways to configure...