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

Working with NamedQuery

NamedQuery is another useful feature provided by hibernate. Sometimes, we require a query or a bunch of queries multiple times in the life of an application; at such a time, this feature helps.

How to do it…

Let's create a scenario to understand this feature.

Let's consider that we want to search a category by name. The following code shows how NamedQuery would help us in this case.

For this, we will use the @NamedQuery and @NamedQueries annotations in a class:

  • @NamedQuery: This annotation is used to define a single named query

  • @NamedQueries: This annotation is used to define multiple queries

Update the following code in their respective files:

Source file:

@NamedQuery(name="getCategoryNameByName", query="FROM Category c WHERE")

@Table(name = "category")
public class Category {

    // fields and getters/setters

Here, we defined NamedQuery using the @NamedQuery annotation, and we used two attributes.


The name attribute accepts string...