WebSphere Training Overview
This course is an advanced introduction to the Enterprise Java Beans (EJB) technology. It starts by introducing the concepts and 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 development and labs will be based on IBM WebSphere Studio Application Developer v5.1, emphasizing the new features of the EJB 2.0 specification.
WebSphere Training Audience
This course is intended for intermediate to advanced Java programmers. System architects will find the advanced concepts especially beneficial in designing a framework..
WebSphere Training Prerequisites
The student is expected to understand the core Java libraries; be familiar with web application programming, including servlets and JSPs; have some experience or understanding of using IBM WebSphere Studio Application Developer. This course includes a review of WSAD Basics, but assumes some knowledge of WSAD.
WebSphere Training Learning Objectives
After completing this course, the student should be able to:
- Understand the need for EJB
- Understand the EJB 2.0 specification at an expert level
- Understand how to develop, test, and deploy EJBs with WSAD
- Gain knowledge of J2EE Design Patterns and Best Practices
- Learn the industry secrets in EJB scalability
Topics
- Review of WSAD v5.1 Basics
- Introduction to Web Applications and J2EE
- Overview of Enterprise Java Beans
- Session EJBs
- Entity EJBs
- EJB and Exceptions
- EJB and Transactions
- EJB Security
- Message-Driven EJBs
- J2EE Best Patterns with Focus on EJB
- WebSphere V5 administration for programmers
- J2EE Design Patterns with Focus on EJB
- EJB Inheritance
WebSphere Training Practical Work
Students develop session beans with WSAD, including accessing a database from session bean and EJB Java Client. Next, they develop CMP Entity Beans, including EJB/RDB mapping, finder methods. Next, they develop a message-driven bean and use the Java Message Service (JMS) server bundled with WSAD. Students also develop access beans. The purpose is to display the use of development, testing, and deployment tools to improve EJB development productivity. The student will deploy a J2EE application to WebSphere Application Server v5.
WebSphere Training Course duration
5 days
WebSphere Training Course outline
1. Introduction
- Quick introduction to WSAD v5.1.1.
- What's new in Eclipse 2.1 compared to 1.0?
- Refactoring
- Line numbers
- Exception stack trace hyperlink
- More productivity tips?
- What's new JDK 1.4.
- XML parserz
- Logging API
- Security
- Preferences API
- Assertions
- Hot code reloading by Java Profiling and Debugging Architecture
- Nested exception (getCause/initCause)
- UML Class
2.
Introduction to Web Applications
- Java Web applications
- Java Web application architecture
- J2EE architecture
- Web application programming model - MVC
- A scenario of using MVC
- Typical services provided by application servers
- IBM WebSphere product family
- WebSphere Studio Application Developer (WSAD)
- WebSphere Application Server
- WebSphere editions
- Web application development and deployment using WSAD
- EAR projects
- EJB projects
- WSAD testing environment
- Server perspective
- Resources configuration
- Debug mode
- JNDI explorer
- J2EE, data, Web and XML tooling
- Performance and trace tooling
- Team development
3
.
Overview
- Needs for EJB
- Distributed computing
- Distributed transaction
- Distributed security
- What are EJBs ?
- Main characteristics of EJBs
- Foundational technologies of EJBs
- EJB architecture components
- EJB client
- EJB JAR file
- EJB server
- EJB container
- Enterprise JavaBeans
- Session beans
- Entity beans
- EJB classes and interfaces
- Basic components of entity and session beans
- EJB home interface
- An EJB home interface example
- EJB home object
- EJB remote interfaces
- Remote interface example
- EJB objects
- EJB implementation class
- Deployment descriptors
- How do EJBs work
- EJB container services
- EJB application development
- Deploying enterprise beans
- Major components of deployed EJBs
- WebSphere EJB server architecture overview
- WebSphere EJB server environment
4
.
Session Beans
- Session beans
- Stateless session beans
- Stateful session beans
- Components of session beans
- Home interface for session beans
- Remote interfaces for session beans
- The session bean class
- The ejbCreate() method
- Business methods
- Deployment descriptors
- ejb-jar.xml
- ibm-ejb-jar-bnd.xmi
- A simple stateless bean example
- A simple stateful bean example
- The session context
- Session bean life cycle
- Concurrency issues
- Invoking session beans from a client application
- Looking up a home object
- Create an EJB object
- Calling business methods
- WSAD J2EE development environment
- Developing a session bean using WSAD
- Adding an EJB project
- Adding a session EJB
- Adding fields to the bean
- Adding methods to the bean
- Adding business methods to the bean
- Writing life cycle methods
- Promoting methods to remote and home interface
- Deploying EJBs
- Setting deployment descriptor
- Generating deployed Code
- WebSphere Test Environment
- Run on the server
- Testing EJBs with the EJB test client in WSAD
5
.
Entity Beans
- Entity beans
- Entity beans components
- Container
- Primary key class
- Home interface
- Remote interface
- Entity bean class
- Entity instance
- Entity object life cycle
- Bean instance life cycle
- Persistence
- Bean-managed persistence (BMP)
- Writing a BMP bean
- A BMP bean example
- Container-managed persistence (CMP)
- Writing a CMP bean
- A CMP bean example
- Finder helpers
- Indicating persistent fields
- Business methods
- Entity context
- Writing CMP beans
- Object-relational mapping
- Data mapping with BMP
- Standard CMP field mapping
- Defining and mapping CMP fields
- Mapping design in WSAD
- Meet-in-the-middle
- A CMP entity bean example
- Adding CMP fields in the bean
- Creating a top-down database mapping
- Adding a BMP entity EJB
- Setting deployment descriptors
- EJB editor (ejb-jar.xml)
- EJB extension editor (ibm-ejb-jar-bnd.xmi, ibm-ejb-jar-ext.xmi)
- Map editor (Map.mapxmi)
6
.
Exceptions
- Use of Exception
- Exception types
- System Exception
- Application Exception
- Bean class
- Container
- Client
- Standard Exceptions
7
.
Transactions
- Transaction management
- Object transaction
- EJB transaction basics
- Transaction propagation
- Client-managed transaction
- Bean-managed transaction
- Container-managed transaction
- Transaction outcome
- Vetoing transaction
- Transaction isolation
- Isolation level
8
.
Security
- Goals of the EJB Security specification
- Declarative EJB security
- EJB Delegation Policy
- Programmatic EJB security
9
.
Message-Driven Beans
- The Need for Messaging
- The Java Message Service
- Queues and Topics
- Integration JMS and EJB
- Message-Driven Beans Concepts
- Security, Transactions, Load Balancing
- Poison Messages
- Responding to the Sender
10
.
Best Practices
- Using Session Beans Effectively
- Dealing with Transactions
- Optimizing Your Deployment
- Pooling for Container-Managed Persistence Entity Beans
- Using Access Beans
- JDBC Best Practices
- Java Best Practices
- WebSphere Best Practices
11
WebSphere 5 Administration for Programmers
- Application administration tasks
- Installing an enterprise application
- Configuring WebSphere
- Managing applications
- Automating WebSphere administration
12
.
J2EE Design Patterns
- What is a Design Pattern?
- EJB Layer Design Patterns
- Transaction and Persistence Patterns
- Client-Side EJB Interaction Patterns
- Generating Primary Keys
Appendix A. EJB Inheritance
- EJB Inheritance
- Characteristics of a child EJB
- Single and root-leaf table mapping
- Guidelines and limitations
- EJB Inheritance features in WSAD
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