JPA Training: Introduction to the Java Persistence API

Course Number: JAV-160
Duration: 3 days
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JPA Training Overview

Accelebrate's JPA Training: Introduction to the Java™ Persistence API class teaches attendees how to implement JPA for data persistence. JPA is a standard feature of Java EE 5 and later, but can also be used with Java SE applications.

Location and Pricing

Most Accelebrate courses are taught on-site at our clients' locations worldwide for groups of 3 or more attendees and are customized to their specific needs. Please visit our client list to see organizations for whom we have recently delivered training. These courses can also be delivered as live, private online classes for groups that are geographically dispersed or wish to save on the instructor's or students' travel expenses. To receive a customized proposal and price quote private training at your site or online, please contact us.

In addition, some courses are available as live, online classes for individuals. To see a schedule of online courses, please visit http://www.accelebrate.com/online_training/?action=category&page=j2ee.

JPA Training Prerequisites

All attendees must have substantial prior Java development and relational database experience.

Hands-on/Lecture Ratio

This class is 70% hands-on, 30% lecture, with the longest lecture segments lasting for 20 minutes.

JPA Training Materials

All JPA training students receive comprehensive courseware covering all topics in the course.

Software Needed on Each Student PC

Please contact us for a comprehensive setup sheet for this course.

JPA Training Objectives

Understand the JPA architecture
Create JPA based applications
Understand and use JPA to map persistent objects to the database
Create JPA persistence units, and understand JPA persistence contexts
Use the JPA EntityManager
Work with queries and JPQL (Java Persistence Query Language)
Understand and work with collections & associations

Value and Entity Types
Bidrectional and unidirectional
1-1, 1-N, N-N

Use versioning support for optimistic locking
Map inheritance hierarchies using JPA
Performance tune your JPA applications
Understanding JPA transaction support
Understand the relationship between JPA & EJB 3
Understand Stateless and Stateful Session beans
Use JPA entities from session beans

JPA Training Outline

Overview

Persistence Layers, Object-Relational Mapping (ORM), JDBC
JPA Overview

Mapping with JPA

Entities and @Entity, ids and @Id
Generated Id Values
Basic Mapping Types

EntityManager

Persisting to the DB, the EntityManager,
Persistence Units and Configuration
Retrieving Persistent Entities

Updates and Queries

Inserting and Updating

Persisting new Entities, Updating a Persistent Instance

Querying and JPQL

Object Based Queries, Select statements, WHERE clause
Named Queries

The Persistence Lifecycle

Transaction Overview and Transactions in JPA
JPA Transaction API (in Managed and Non-managed Environments)
The lifecycle of managed objects
Persistent, transient, and detached objects
The Persistence Context (Lifespan, Relation to Managed Objects,)
Synchronization to the Database

Working with EJB Session Beans

Session Bean Overview
Using JPA with Session Beans EJB
Injecting Entity Managers
Container Managed Transactions
Container Managed Entity Manger
Extended Persistence Contexts

Optimistic Locking / Versioning

Detached Instances and Optimistic Locking
Versioning overview
Using Versioning

Entity Relationships

Relationships Overview: Object Relationships, Participants, Roles, Directionality, Cardinality
Relationship Mapping
Mapping Overview (1-1, 1-N, N-1, N-N)
Unidirectional and Bidirectional
Mapping One-One, One-Many and Many-Many
Relationship Inverses
Cascading Over Relationships
Lazy and Eager Loading
Queries Across Relationships (Inner Joins, Outer Joins, Fetch Joins)

Inheritance Mapping

Entity Inheritance Mapping
Single Table Mapping
Joined (Table per Subclass) Mapping
Table per Concrete Class Mapping
Pros and Cons

Additional Querying Capabilities

Projection Queries, Aggregate Queries
Bulk Updates and Deletes
Native SQL Queries

Additional JPA Capabilities

Embedded Objects
Best Practices

Primary Keys, Named Queries, Lazy/Eager Loading, Transactional Semantics, Encapsulation, Report Queries

Conclusion

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“Accelebrate,” “Accelerated Learning Celebrated Results,” and the Accelebrate logo are registered trademarks of Accelebrate, Inc. All other product names and trademarks are property of their respective owners. Course outline content may mirror or be derived from the book that each student receives with the course. Otherwise, all content is copyright © 2003- by Accelebrate, Inc. of Atlanta, Georgia, USA. To contact us, please use the contact form, email info@accelebrate.com us, or call 1 877 849 1850 in the US and Canada, 0808 234 2132 in the UK, 1 800 550 311 in Ireland, or +1 678 648 3113 from all other locations.

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