English Delivery Only: JPA and Hibernate

Who will the Course Benefit?

The JPA and Hibernate course is aimed at developers involved in the building of complex enterprise-level Java applications.

Course Objectives

This course aims to provide the delegate with the knowledge to be able to develop (or contribute to the development of) enterprise-level Java applications that use JPA and Hibernate to read from and write to relational databases.

JPA and Hibernate Training Course

Course Contents - DAY 1

Course Introduction

• Administration and Course Materials
• Course Structure and Agenda
• Delegate and Trainer Introductions

Session 1: INTRODUCTION TO HIBERNATE

• The problems with JDBC
• About ORM
• The relationship between JPA and Hibernate
• Hibernate architecture
• Installing Hibernate
• Configuring the SessionFactory (XML and Java)
• Obtaining and using a Session (basic)

Session 2: BASIC ENTITY MAPPING

• About entity mapping
• XML mapping
• Annotation mapping
• Entity types
• Value types
• Embeddable types
• Collections
• Key generation

Session 3: THE HIBERNATE SESSION

• About the Hibernate Session
• Transient,persistent,and detached entity states
• Hibernate transactions
• Using the Session to perform basic CRUD operations

JPA and Hibernate Training Course

Course Contents - DAY 2

Session 4: COMPOSITE MAPPING

• About composite mapping
• One-to-one
• One-to-many
• Many-to-many
• Uni vs bi-directional associations
• Cascading
• Eager vs lazy fetching
• The n+1 problem

Session 5: INHERITANCE MAPPING

• About inheritance mapping
• Mapped superclass
• Single table
• Joined table
• Table per class
• Polymorphic queries

JPA and Hibernate Training Course

Course Contents - DAY 3

Session 6: HIBERNATE QUERY LANGAUGE (HQL)

• About Hibernate Query Language (HQL)
• Basic queries
• Querying for a subset of the class's fields
• Literal,ordinal,and named parameters
• Single result queries
• Functions
• Queries with joins
• Eager fetching
• Ordering
• Grouping
• Native queries
• Named queries
• An introduction to criteria queries

Session 7: THE JPA ENTITYMANAGER

• About the JPA EntityManager
• Configuring the EntityManagerFactory (XML and Java)
• Obtaining and using an EntityManager (basic)
• About the Persistence Context
• About the JPA Query Language (JPQL)
• JPA EntityManager vs Hibernate Session

Session 8: PERFORMANCE TUNING

• Discovering performance issues
• Choosing the right fetch type
• Query-specific fetching
• Using Sets,not Lists,for many-to-many associations
• Having the database do the heavy lifting
• First and second-level cache
• Performing bulk updates

Requirements

Delegates attending this course should be competent Java developers who have a good understanding of OO principles and are able to build simple applications that exploit APIs including Collections,IO,and JDBC in particular. This knowledge can be obtained by attendance on the pre-requisite Java Programming 1 / Java Developer course.

Further Learning

• Developing Applications with Java EE
• Core Spring