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  • Book Overview & Buying Java Hibernate Cookbook
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Java Hibernate Cookbook

Java Hibernate Cookbook

By : Prajapati, Ranapariya
Buy this Book
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Java Hibernate Cookbook

Java Hibernate Cookbook

By: Prajapati, Ranapariya
Buy this Book

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 (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Sections
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Conventions
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Reader feedback
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Customer support
Lock Free Chapter
1
1. Setting Up Hibernate
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1. Setting Up Hibernate
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Introduction
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Getting the required libraries for hibernate
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Creating a hibernate persistent class
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Providing an XML-based hibernate mapping
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Providing an annotation-based hibernate mapping
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Providing a hibernate configuration using an XML file
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Providing a hibernate configuration using the properties file
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Configuring hibernate programmatically
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2. Understanding the Fundamentals
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2. Understanding the Fundamentals
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Introduction
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Building a SessionFactory
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Creating a generic SessionFactory provider class
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Opening a new session
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Opening a stateless session
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Saving an object to the database
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Fetching an object from the database
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Removing an object from the database
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Updating an object
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Creating a criteria
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Restricting the results using a criteria
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Pagination using a criteria
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Sorting the results
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Transforming a result
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Using basic projection
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3. Basic Annotations
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3. Basic Annotations
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Introduction
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Declaring a class as an entity and creating a table in the database – @Entity and @Table
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Creating a column in the table – @Column
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Creating a primary key and composite primary key column – @Id and @IdClass
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Creating an autogenerator column
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4. Working with Collections
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4. Working with Collections
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Introduction
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Persisting List
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Persisting Set
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Persisting Map
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Persisting Array
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5. Working with Associations
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5. Working with Associations
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Introduction
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One-to-one mapping using foreign key association
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One-to-one mapping using a common join table
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One-to-one mapping using a common primary key
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One-to-many mapping or many-to-one mapping
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Many-to-many mapping
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6. Querying
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6. Querying
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Introduction
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Working with an alias
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Performing aggregate operations
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Executing a subquery using a criteria
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Executing a native SQL query
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Executing a query using HQL
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Using formula in hibernate
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Working with NamedQuery
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7. Advanced Concepts
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7. Advanced Concepts
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Introduction
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Working with a first-level cache
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Working with a second-level cache
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Working with a query cache
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Working with the table per class hierarchy strategy of inheritance
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Working with the table per subclass strategy of inheritance
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Working with the table per concrete class strategy of inheritance
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Working with the versioning of objects
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Maintaining the history of an object
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Working with an interceptor
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Working with batch processing
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8. Integration with Other Frameworks
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8. Integration with Other Frameworks
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Introduction
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Integration with Spring
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Integration with Struts
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Index
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Index

Getting the required libraries for hibernate

To work with hibernate, we need a JAR (Java Archive) file provided by hibernate. Here, we will see how to download the hibernate core distribution. There are multiple ways to get the required libraries; here, we will consider two of them:

  • Manually downloading
  • Using Maven

Manually downloading

The first and most basic JAR file needed is a JDBC driver. The JDBC driver is a bridge or an API between Java and the database. The JDBC driver provides us with the generic classes that will help us communicate with the database. Generally, the driver is either provided by the database provider or developed by communities; however, you have to get it yourself. This also depends on the type of the database you are using. As we will use the MySQL database for this book, we will use the Mysql-Connector.jar file.

How to do it…

Let's come back to the library section. Apart from JDBC, you will need the JAR files for hibernate. Perform the following steps:

  1. Download the hibernate core distribution from http://hibernate.org/orm/.
  2. Now, place all the files in your classpath if you plan to run a standalone program and put them in the lib folder if it's a J2EE project.

Note

When you manually download the libraries, it's the programmer's responsibility to get all the required and dependent JAR files from the official site of hibernate; failing this, they will face errors.

Using Maven

If you use the Maven project, it would get rid of your headache of finding all the JAR files for hibernate and the dependent libraries. You can use the following Maven configuration for hibernate.

How to do it…

  1. Enter the following code into the pom.xml source file to show the dependency mapping of hibernate and MySQL in pom.xml:
    …
<dependencies>
  <!-- MySQL connector -->
  <dependency>
    <groupId>MySQL</groupId>
    <artifactId>MySQL-connector-Java</artifactId>
    <version>MySQL-connector-version</version>
  </dependency>
 
  <!-- Hibernate framework -->
  <dependency>
    <groupId>hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>hibernate-version</version>
  </dependency>
<dependencies>

Using this method, Maven will download all the required JAR files related to hibernate and the dependent libraries required for hibernate.

Note

Replace MySQL-connector-version with your required MySQL connector version in the <version>MySQL-connector-version</version> line, and replace hibernate-version with your required hibernate version in the <version>hibernate-version</version> line.

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Java Hibernate Cookbook
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