Book Image

Java Hibernate Cookbook

By : Yogesh Prajapati, Vishal Ranapariya
Book Image

Java Hibernate Cookbook

By: Yogesh Prajapati, Vishal Ranapariya

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
About the Authors
About the Reviewers

Creating a criteria

Generally, we require filtered data in a SQL query, in which we use the WHERE clause to apply a condition to the data. Apart from the WHERE clause, we can use ORDER BY to apply sorting to the data, either ascending or descending, and LIMIT (if it's MySQL) to get a limited number of rows.

Hibernate allows us to perform all the operations mentioned before in an object-oriented way. A criteria is an interface; it provides an API to perform WHERE, ORDER BY, LIMIT, result transformation, and so on.

How to do it...

Here, we will try to create a criteria for employee.

The SQL query executed to achieve the same result is as follows:

SELECT * FROM employee;

Now, let's take a look at how to do the same using hibernate.


Enter the following code to create a criteria for employee:

Criteria criteria = session.createCriteria(Employee.class);
List<Employee> employees = criteria.list();
for(Employee employee : employees){


The output...