Description

Inspired by the Hibernate and Toplink frameworks, JPA has become the standard for managing the persistence of Java objects in a database. In this training, you will implement the concept of object-relational mapping guaranteeing better portability of your Java EE applications.

Who is this training for ?

For whom ?

Developers, software architects and project managers.

Prerequisites

Training objectives

Establish a mapping between Java objects and relational tables

Create, update and delete persistent objects

Master the JPQL query language

Manage transactions

Training program

• Java and JPA persistence techniques
  • The different persistence mechanisms: Java API and frameworks.
  • The Java Persistence API (JPA) solution.
  • Integration of JPA into a Java EE application.
• Developing a persistent class
  • Code the persistent class.
  • Perform the Object/relational mapping.
  • Configure and start the JPA engine.
  • Perform a query JPQL.
  • Saving a persistent object.
  • Practical work Mapping a class.
  • Executing a JPQL query.
• Object/Relational Mapping with JPA
  • Context and objectives of an ORM.
  • Principle of developing persistent classes.
  • Using annotations to configure an Object/Relational mapping.
  • Mapping classes and associations.
  • Mapping strategy for inheritance.
  • Practical work Choose an identifier generator.
  • Implementation of a one-to-one, one-to-many and inheritance relationship.
• Handle persistent objects
  • The different reading techniques.
  • Loading strategies.
  • Principle of lazy loading.
  • CRUD operations (Create/ Read/Update/Delete).
  • Life cycle of persistent objects.
  • Synchronization with the database.
  • Practical work Create , update and delete persistent objects.
• Advanced use of mapping
  • Compound primary key, multitable mapping.
  • Control INSERT and UPDATE queries.
  • List, map and many-to-many associations.
  • Practical work Mapping a secondary table.
  • Implementation of a many-to-many association.
• The JPQL language
  • Query queries.
  • Operations on strings and temporal data.
  • Inner, outer and reported joins.
  • Principle of subqueries.
  • Queries on sets.
  • Practical work Perform an optimized JPQL query.
• Concurrent Transactions and Access
  • Recall the properties of a transaction.
  • Transactional management with JPA.
  • Integration in a Web and EJB application.
  • Lock pessimistic and optimistic.
  • Practical work Implementation of transactional management.