Knowledge United

Course Description

This course is an introduction to the Enterprise Java Beans (EJB 3.0) technology. It starts by introducing the concepts and is ideal for someone who has never programmed using EJB. The course rapidly picks up and ends with advanced concepts that students can use in real life to complete large scale EJB based projects. The labs are done using Eclipse WTP and JBoss 5.0 runtime.

What You Will Learn

After completing this course, the student should be able to:

• Understand the need for EJB
• Understand the EJB 3.0 specification at an expert level
• Understand how to develop, test, and deploy EJBs
• Gain knowledge of EJB Design Patterns
• Learn the industry secrets in EJB scalability
• Learn how to develop all types of EJB beans using Eclipse WTP

Audience

This course is intended for intermediate to advanced Java programmers. System architects will find the advanced concepts especially beneficial in designing a framework.

Prerequisites

Good Java programming knowledge. Be familiar with web application programming, including servlets and JSPs.

Course Outline

1. Java Enterprise Edition (EE) Overview

• Objectives
• Introduction to Java Platform
• Java Community Process (JCP)
• Introduction to Java EE
• Why Move to Java EE
• Java EE - New and Enhanced Features
• Java EE Software Packaging
• Java EE Technologies
• Summary

2. Java EE Tools in Eclipse WTP

• Objectives
• Eclipse Platform
• Eclipse Workspace
• Perspectives, Views & Editors
• Basic Operations with Eclipse Views and Perspectives
• The Java Perspective
• The Debug Perspective
• Navigator View
• Package Explorer
• Outline View
• Problems View
• Eclipse Preferences
• Build and Validation
• Code Completion, Templates and Snippets
• Searching
• Configure Compiler Class Path
• JRE Switching
• Eclipse WTP
• Java EE Perspectives
• Project Explorer View
• Servers View
• JPA Tools

3. Enterprise JavaBeans (EJBs) Overview

• Objectives
• Need for EJBs
• Distributed Computing
• Distributed Transaction
• Distributed Security
• What are EJBs?
• Main Characteristics of EJBs
• EJB Remote Method Call
• EJB Architecture Components
• EJB Client
• EJB JAR File
• EJB Container
• EJB Server
• Enterprise JavaBeans
• Session Beans
• Entity Beans
• Java Persistence API - Entities
• Message-Driven Beans (MDBs)
• EJB Specification
• Summary

4. Stateless Session Beans

• Objectives
• Session Beans
• Stateless Session Bean
• Stateless Session Bean Pooling
• Stateless Session Bean Examples
• Stateful Session Bean
• Stateful Session Bean Examples
• Annotations
• Stateless Session Bean Components
• Example: Business Interface
• Example: Bean Class
• Alternative Example
• JNDI - Overview
• Example: The Client
• Business Interface Details
• Bean Class Details
• Session Bean Lifecycle
• Stateless Session Bean Lifecycle
• Summary

5. Stateful Session Beans

• Objectives
• Stateful Session Bean
• Stateful Session Beans
• Session Bean Lifecycle
• Stateful Session Bean Lifecycle
• Stateful Session Bean Components
• Stateful Session Bean Example
• Stateful Session Bean Client
• Removing the Bean
• Summary

6. Entities and Java Persistence API

• Objectives
• Data Persistence
• Java Persistence API
• Entities
• Session Beans Vs 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

7. JPA Entity Lifecycle

• Objectives
• 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
• Life-Cycle Callbacks
• Example: Internal callback
• External Callback Class
• Listener Class - Example
• Synchronizing with Databases
• Entity Lookup
• JPAQL (JPA Query Language)
• Summary

8. References and Dependency Injection

• Objectives
• Role of References
• EJB Reference Annotations
• Resource Reference Annotations
• Dependency Injection
• Annotation Injection
• Example: Field Level Injection
• Example: Method Level Injection
• Deployment Descriptor Injection
• Example: Deployment Descriptor Injection
• Class Level References
• Multiple References
• EJB References in Deployment Descriptors
• Resource References in Deployment Descriptors
• Reference Lookup
• EJBContext
• JNDI Lookup with EJBContext
• Overriding Reference Annotations
• Default Reference Name
• Resolving References
• mappedName Attribute
• Overloaded Reference Names
• Reference Best Practices
• Summary

9. Java Persistence Query Language (JPA QL)

• Objectives
• 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
• Bulk Updates
• Bulk Delete
• Running Native SQL Query
• Native SELECT Query
• Native SQL Delete and Insert
• Named Native Query
• Summary

10. Entity Relationship Overview and One-to-One

• Objectives
• 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
• Traversing the Relationship
• Summary

11. Complex Entity Relationships

• Objectives
• One-To-Many and Many-To-One
• Many-to-One Unidirectional
• Creating Entity Instances
• Traversing the Relationship
• Modeling One-to-Many
• Creating Entity Instances
• Traversing the Relationship
• Many-to-Many
• Modeling Many-to-Many
• Creating Entity Instances
• Traversing Relationship
• Unidirectional One-to-Many
• Modeling Unidirectional One-to-Many
• Creating Entity Instances
• Traversing the Relationship
• Relationship in JPA QL
• Fetching Optimizations
• Lazy vs. Eager Initialization
• Lazy Initialization
• Problems with Lazy Initialization
• Fetch Join Query
• Summary

12. Entity Inheritance

• Objectives
• Inheritance
• Inheritance Example
• Inheritance and Entities
• Inheritance Strategies
• Inheritance 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

13. Message-Driven Beans

• Objectives
• The Trouble with RMI/IIOP
• Messaging to the Rescue
• Messaging Features
• Message-Oriented Middleware
• Messaging Domains
• Publish/Subscribe
• Point-to-Point
• Java Message Service
• JMS Programming: Overview
• The JMS Interfaces
• Integrating JMS and EJB
• Message-Driven Beans Are Different From Other EJBs
• Message-Driven Beans Cannot Talk to Their Clients
• Message-Driven Beans are Stateless
• Durable Subscription
• Message-Driven Bean Interfaces
• javax.jms.MessageListener
• javax.jms.Message
• Specialized Message Types
• Lifecycle
• Message Driven Bean - Example
• Message Driven Bean - Client Example (JSP)
• Transactions
• Security
• Load Balancing
• Clustering and Topics
• Clustering and Queues
• A Few Tips
• Poison Messages
• How the Programmer Can Avoid Poison Messages
• How the System Administrator Can Avoid Poison Messages
• Building a Response
• Potential Problems
• A Simple Alternative
• Type Checking and Messages
• Testing Message-Driven Beans
• Summary
• References

14. EJB Security

• Objectives
• Introduction
• How EJB Security Works
• Protecting Web Resources
• Setting Method Permission
• Defining Roles
• Defining Roles Using Annotations
• Specify Methods Permission
• Disable Security Check
• Excludes List
• RunAs Security Identity
• RunAs Security Identity Configuration
• Programmatic EJB Security
• Security Role Reference
• Summary

15. Web Service Access to EJBs

• Objectives
• Web Services
• Operation and Implementation
• WSDL
• Typical Development Workflow
• Advantages of Web Services
• Web Services and EJB
• Web Service Clients
• JAX-WS Overview
• JAX-WS Framework
• Java to XML Data Conversion
• Main Goals of JAX-WS
• JAX-WS Server
• WSDL Overview
• WSDL Document Tags
• Web Service EJBs
• Annotate The Session Bean
• Annotate the Methods
• Service Endpoint Interface
• Package and Deploy
• Summary

16. EJB Timer Service

• Objectives
• Container Managed Timer Service
• EJB Timer Service
• Interaction between Timer Service and EJB
• Timer Service API
• The TimerService Interface
• Obtaining the Timer Service
• Creating a Timer
• Getting All Timers
• The Timeout Callback method
• The Timer Interface
• Example: TimerTestBean
• Timer and Transaction
• Limitations of EJB Timer Service
• Summary

17. Transactions

• Objectives
• Need for Transactions
• Transactions
• ACID Properties
• Transaction Components
• Distributed Transactions
• Distributed Transaction Components - Two Phase Commit
• Java Transaction API (JTA)
• Object Transaction
• EJB Transaction Basics
• Transaction Propagation
• Transaction Outcome
• Container Managed Transaction
• Container Managed Transaction Settings
• Interacting with Container Managed Transactions
• Container Managed Transaction - Example
• Transaction Attributes Support
• Bean Managed Transaction
• Bean Managed Transaction - Example
• Client Managed Transaction
• Transaction Isolation
• Isolation Level
• Summary

18. Interceptors

• Objectives
• Introduction
• Interceptors
• Internal Interceptor
• Example: Internal Interceptor
• External Interceptors
• Default Interceptor - Example
• Another Example
• Class-Level Interceptor - Example
• Setting Class Level Interceptors
• Pre & Post Processing with Interceptors - Example
• Excluding Default and Class Level Interceptors
• Interceptors on Lifecycle Callbacks
• Blocking Calls to Business Method Example
• Summary

19. EJB Deployment

• Packaging EJB JAR File
• The Bean Classes
• Dependent Classes
• Business Interfaces
• Client JAR File
• The Deployment Descriptor
• Basic Deployment Descriptor
• Configuring a Session EJB
• Configure Assembly Description

20. EJB 3 Design Patterns

• Objectives
• Introduction
• Session Fa ade Pattern
• JPA and Session Fa ade Pattern
• Fa ade Example
• Message Fa ade Pattern
• Message Fa ade Using JMS
• Message Fa ade Using Timer Service
• Additional Notes About Message Fa ade
• The Command Pattern
• Implementing Command Pattern
• Example Command Pattern
• Data Transfer Object (DTO) Pattern
• JPA Entity as DTO
• Problem With JPA Entity as DTO
• Version Number pattern
• JPA and Version Number Pattern
• Primary Key Generation
• JPA and Primary Key Generation
• Fast Lane Pattern
• JPA and Fast Lane Pattern
• Summary

Courses with a guaranteed icon () are guaranteed to run. View our full guaranteed to run schedule.

Onsite / Private Class

We can provide this class onsite to your team as a standard class or customized to meet your specific needs. Request a quote today.

Start Date	End Date	Start Time	End Time	Location
Your Dates		Your Time		Your Location	Request a quote today

Notify Me of Upcoming Dates

Where are all the dates? Contact us using the form below and we will provide you with training options for this course, as we have many nationwide dates that may not be listed.

Name:		Phone:
Email:		Company:
Comments: