EJB and JPA Programming with Java EE 6 - WebLogic 12c / Eclipse Training

Course #:WA2091

EJB and JPA Programming with Java EE 6 - WebLogic 12c / Eclipse Training

Courseware: Available for sale

This EJB and JPA training course covers in-depth details of how to use these powerful Java EE technologies. Although previously difficult to program, EJB components in modern applications are simple yet provide many powerful features like transactional behavior and fine-grained security. Combined with the simplicity of the Java Persistence API using EJB and JPA technology together is an excellent synergy built into the Java EE standards. Using these technologies could help you create applications that leverage more of the Java EE standards and depend less on third party libraries like Spring and Hibernate. This course will show you how to use the features of both of these technologies, including some of the new features introduced in Java EE 6.

Objectives

 

This class combines lecture with hands-on experience, and open ended discussion that will help the developer quickly understand the various backend technologies available with Java EE 6. Upon completion of the course, students will:

  • Develop business logic layer using EJB 3.1
  • Use various EJB features like Singleton EJBs, Asynchronous EJBs, and EJB Timers
  • Persist data using Java Persistence (JPA)
  • Define relationships in JPA Entities
  • Query data using JPA Query Language and Criteria Queries
  • Use CDI (Contexts and Dependency Injection) to perform type-safe dependency injection of components

Topics

 
  • EJB Overview
  • Session Beans
  • Contexts and Dependency Injection (CDI)
  • Java Persistene API (JPA)
  • Transactions
  • Security
  • Message-Driven Beans

Audience

  Software designers, developers and programmers new to Java EE or with J2EE 1.4 or earlier experience

Prerequisites

 

Participants should already have an understanding of Java programming. For those that require Java experience before this course the following course is suggested:

  • WA1278 Introduction to Java Using Eclipse

Duration

  Five days

Outline of EJB and JPA Programming with Java EE 6 - WebLogic 12c / Eclipse Training

Chapter 1. Overview of Enterprise JavaBeans (EJB)

  • What are EJBs?
  • Distributed Transaction
  • Distributed Security
  • Distributed Computing
  • Main Characteristics of EJBs
  • EJB Container
  • EJB Client
  • Annotations
  • Enterprise JavaBeans
  • Session Beans
  • Message-Driven Beans (MDBs)
  • Asynchronous Session EJBs
  • EJB Timers
  • EJB Lite
  • EJB Packaging
  • EJBs are Simple!
  • Summary

Chapter 2. Stateless Session EJB

  • Stateless Session Bean
  • Stateless Session Bean Components
  • Example: Business Interface
  • Example: Bean Class
  • Business Interface Details
  • Using an EJB in a Client
  • Portable JNDI Syntax
  • No-interface EJB
  • Stateless Session Bean Lifecycle
  • Stateless Session Bean Initialization
  • Summary

Chapter 3. Stateful Session EJB

  • Stateful Session Bean
  • Stateful Session Beans
  • Session Bean Lifecycle
  • Stateful Session Bean Lifecycle
  • Stateful Session Bean Example
  • Stateful Session Bean Client
  • Removing the Bean
  • Why Use Stateful Session EJBs?
  • Stateful Session EJB and Transactions
  • Summary

Chapter 4. Overview of Contexts and Dependency Injection

  • Once upon a time
  • What is CDI?
  • The JSRs
  • CDI Example
  • What Good is DI
  • Old Bean Scope
  • CDI Bean Scope
  • Other Advanced Features of CDI
  • CDI Implementation
  • Summary

Chapter 5. Defining CDI Beans

  • Requirements of Bean Classes
  • Bean Initialization Methods
  • beans.xml
  • Managed Bean Type
  • Using Beans with EL
  • Beans Have Default Names
  • Bean Scopes
  • EJBs in CDI
  • Summary

Chapter 6. Dependency Injection in CDI

  • Injection Points
  • @Inject
  • Typesafe Resolution
  • @Qualifier
  • Using an @Qualifier
  • Alternatives
  • The Client Proxy
  • Summary

Chapter 7. Overview of Java Persistence API

  • Data Persistence
  • Java Persistence API
  • Entities
  • Session EJB vs JPA Entities
  • Entities
  • Persisting and Retrieving Data
  • Accessing Entities
  • EntityManager & Persistence Unit
  • Persistence Context
  • Entities - Example
  • persistence.xml – Hibernate Provider
  • persistence.xml – Open JPA Provider
  • persistence.xml - Toplink
  • Entity Instance Lifecycle
  • Creating EntityManager in Session EJB
  • Creating EntityManager in a Plain Java Class
  • Working With the EntityManager Interface
  • Transaction Basics
  • Summary

Chapter 8. JPA Entity Lifecycle

  • Entity Lifecycle
  • When is an Entity Managed or Detached?
  • Implementing the CRUD Pattern
  • Accessing Entities Using Stateless Session Beans
  • Inserting Data
  • Retrieving Data
  • Updating Data
  • Deleting Data
  • Merging Entities
  • Merging Entities (example)
  • Life-Cycle Callbacks
  • Example: Internal callback
  • External Callback Class
  • Listener Class - Example
  • Synchronizing with Databases
  • Entity Lookup
  • JPAQL (JPA Query Language)
  • Summary

Chapter 9. Java Persistence Query Language (JPA QL)

  • JPA Query Language
  • Basic JPAQL Syntax
  • Simple SELECT Examples
  • Example of Using JPAQL
  • The SELECT clause
  • Reading Data from Code
  • The WHERE Clause
  • Example Using JPAQL from Session EJB
  • Named Query
  • Multiple Named Queries
  • TypedQuery
  • Bulk Updates
  • Bulk Delete
  • Running Native SQL Query
  • Native SELECT Query
  • Native SQL Delete and Insert
  • Named Native Query
  • Summary

Chapter 10. Basic JPA Entity Relationships

  • Relationship Between Entities
  • Anatomy of a Relationship
  • Foreign Key
  • Example Schema
  • One-to-One Unidirectional
  • Creating Entity Instances
  • Traversing the Relationship
  • The Cascade Behavior
  • One-to-One Bidirectional
  • Maintaining Bidirectional Links
  • Simplifying Bidirectional Links
  • Traversing the Relationship
  • Summary

Chapter 11. Complex Entity Relationships

  • One-To-Many and Many-To-One
  • Many-to-One Unidirectional
  • Creating Entity Instances
  • Traversing the Relationship
  • Modeling One-to-Many
  • Maintaining Bidirectional Links
  • Creating Entity Instances
  • Traversing the Relationship
  • Many-to-Many
  • Modeling Many-to-Many
  • Maintaining Bidirectional Links
  • Creating Entity Instances
  • Traversing Relationship
  • Modeling Unidirectional One-to-Many - @JoinTable
  • Modeling Unidirectional One-to-Many - @JoinColumn
  • Creating Entity Instances
  • Traversing the Relationship
  • Relationship in JPA QL
  • Fetching Optimizations
  • Lazy vs. Eager Initialization
  • Lazy Initialization
  • Various Problems with Lazy Initialization
  • Fetch Join Query
  • Summary

Chapter 12. JPA Entity Inheritance

  • Inheritance
  • Inheritance Example
  • Inheritance and Entities
  • Inheritance Strategies
  • Strategy 1: Single Table Per Class Hierarchy
  • Single Table Per Class Hierarchy
  • Table Structure: Single Table Per Class Hierarchy
  • Pros and Cons
  • Strategy 2: Table Per Concrete Class
  • Table Per Concrete Class
  • Table Per Concrete Class: JBoss Warning
  • Table Per Concrete Class
  • Table Structure: Table Per Concrete Class
  • Table Per Concrete Class: Pros and Cons
  • Strategy 3: Joined Subclasses
  • Joined Subclasses
  • Table Structure: Joined Subclasses
  • Joined Subclasses: Pros and Cons
  • Which Approach To Use?
  • Summary

Chapter 13. JPA Criteria Queries

  • JPA QL Limitations
  • Dynamic Queries with JPA Criteria API
  • Simple Criteria Query Example
  • The javax.persistence.criteria.CriteriaQuery Interface
  • The javax.persistence.criteria.CriteriaBuilder Interface
  • More Complex Example
  • Compounding Where Clause Predicates
  • Summary

Chapter 14. Message Driven EJBs

  • The Limitations of RMI/IIOP
  • Messaging to the Rescue
  • Message-Oriented Middleware as Messaging Platform
  • Messaging Domains
  • Publish/Subscribe
  • Point-to-Point
  • Request-Reply
  • Java Message Service
  • JMS Programming: Sending a Message
  • JMS Programming: Receiving a Message
  • The JMS Interfaces
  • Introducing Message-Driven Beans
  • Message-Driven Beans, Big Picture
  • Message-Driven Bean's Lifecycle
  • Message-Driven Beans in More Details
  • Message-Driven Bean Interfaces
  • javax.jms.MessageListener
  • Simple Message-Driven Bean Example
  • Transactions
  • Security
  • Load Balancing
  • Clustering and Topics
  • Clustering and Queues
  • Poison Messages
  • How the Programmer Can Avoid Poison Messages
  • How the System Administrator Can Avoid Poison Messages
  • Summary
  • References

Chapter 15. Asynchronous Session EJB

  • Previous Options
  • Asynchronous EJB Calls
  • Asynchronous Business Method Creation
  • Return Values
  • Example: Future<V> return type
  • Relationship With Java SE Concurrent Programming
  • Future<V> Methods Available
  • Asynchronous Client Models
  • Throwing Exceptions From Asynchronous Methods
  • Summary

Chapter 16. Singleton Session EJBs

  • Singleton Beans
  • Initializing Singletons at Startup
  • Singleton Dependence
  • Destruction
  • Singleton Concurrency
  • Container Managed Concurrency
  • Bean Managed Concurrency
  • Access Timeout
  • Re-entrant Locking Behavior
  • Singletons in Clusters
  • Summary

Chapter 17. EJB Timer Service

  • Container Managed Timer Service
  • EJB Timer Use Cases
  • Interaction between Timer Service and EJB
  • Calendar-based Timer: Automatically Created
  • Scheduling Timer Execution
  • The @Schedule Annotation
  • @Schedule Attributes
  • @Schedule Attribute Syntax
  • Programmatic Timers
  • Timer Service API
  • The TimerService Interface
  • Calendar-Based Timer: Programmatically Created
  • Starting and Ending Programmatic Calendar Timers
  • Programmatically Creating a non-Calendar Timer
  • Getting All Timers
  • The Timeout Callback method
  • The Timer Interface
  • Timer and Transaction
  • Timer Example: Timer Using @Schedule
  • Timer Example: Timer Using ScheduleExpression
  • Timer Example: Timer By Duration
  • Non-persistent Timers
  • Non-persistent Timers in Clusters
  • Summary

Chapter 18. Transactions in EJB

  • Need for Transactions
  • Transactions
  • ACID Properties
  • Transaction Components
  • Distributed Transactions
  • Distributed Transaction Components - Two Phase Commit
  • Java Transaction API (JTA)
  • EJB Transaction Basics
  • Transaction Propagation
  • Transaction Outcome
  • Container-Managed Transaction
  • Transaction Attributes
  • Container-Managed Transaction Settings
  • Interacting with Container-Managed Transactions
  • Container-Managed Transaction – Example
  • Application Exceptions in Container-Managed Transactions
  • Transaction Attributes Support
  • Bean-Managed Transaction Management Type
  • Summary

Chapter 19. EJB Security

  • Introduction
  • How EJB Security Works: Set-Up
  • How EJB Security Works: Runtime
  • Example Security
  • Protecting Web Resources
  • Setting EJB Method Permissions
  • Defining Roles in the Deployment Descriptor
  • Defining Roles in Code
  • Specify Role Access in the Deployment Descriptor
  • Specify Role Access in Code
  • Disable Security Check
  • The Excludes List
  • Run As Identity
  • Setting Run As Role
  • Programmatic EJB Security
  • Programmatic EJB Security Example
  • Role Reference
  • Summary

Chapter 20. EJB Testing

  • Overview of the EJB Embeddable Enterprise Bean Container
  • Embeddable Container Features
  • Initializing the Embeddable Container
  • Using the Embeddable Container
  • The System in a Nutshell
  • EJB Unit Testing
  • Unit Testing with JUnit Testing Framework
  • Summary