Book Image

Java Hibernate Cookbook

Book Image

Java Hibernate Cookbook

Overview of this book

This book will provide a useful hands-on guide to Hibernate to accomplish the development of a real-time Hibernate application. We will start with the basics of Hibernate, which include setting up Hibernate – the pre-requisites and multiple ways of configuring Hibernate using Java. We will then dive deep into the fundamentals of Hibernate such as SessionFactory, session, criteria, working with objects and criteria. This will help a developer have a better understanding of how Hibernate works and what needs to be done to run a Hibernate application. Moving on, we will learn how to work with annotations, associations and collections. In the final chapters, we will see explore querying, advanced Hibernate concepts and integration with other frameworks.
Table of Contents (15 chapters)
Java Hibernate Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

One-to-one mapping using foreign key association


In a one-to-one relationship, each row in the first table is linked to exactly one row in another table. If this relationship is applied, we can say that both the tables have an exactly equal number of rows any time.

We will take a look at the unidirectional and bidirectional ways to show a one-to-one relationship between the tables.

Getting ready

Here, we will consider the Person and PersonDetail classes to show a demo. So, let's first create the classes and tables for both.

Creating the tables

Use the following script to create the tables if you are not using hbm2dll=create|update:

Use the following script to create the passport_detail table:

CREATE TABLE `passport_detail` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `passportno` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
);

Use the following script to create the person table:

CREATE TABLE `person` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL,
  `passport_detail_id...