J2EE and Enterprise JavaBeans with BEA WebLogic Server

The roles of responsibility for architecting and developing distributed transactional systems are daunting: domain expertise, databases, networking and distributed processing, transaction processing, security and more. We rely on application servers to help us build these systems, but that requires application server specific expertise. The Java 2 Enterprise Edition (J2EE) is a series of APIs and technologies, which allow us to build these in an application server independent fashion. The Enterprise Java Bean (EJB) technology allows us to separate the business rules from the deployment, security and transactional issues making it simple to designate them without complex programming. This course is an advanced skill series that will bring your staff up to speed quickly on all of the J2EE APIs: EJB, JDBC, RMI, JNDI, JTA, WAP, WML, Servlets/JSP, etc. In addition to these skills, we cover many important architectural issues for building scalable distributed applications.

Audience

Participates who wish to gain an understanding and mastery in building and deploying distributed transactional systems in Java.

Prerequisites

Basic Java programming and SQL

Duration : Weeks

Week 1: Introduction to Java 2 Enterprise Edition (J2EE) and EJB

J2EE Architecture

EJB, RMI, JNDI, JMS, JTA, JINI, WAP, WML, JDBC, Servlets/JSP, Applet, XML

Multi-Tier Distributed Transactional Systems

Remote Method Invocation (RMI):

Coding Remote Interface, Home Interface, Remote Interface Implementation, and Client

Putting It All Together and Running the Application

Java Security and Policy

JDBC and Accessing SQL Databases

Drivers and Connections

Statements, Prepared Statements, Callable Statements, Stored Procedure Calls

Setting Up Oracle 8i ; Create tables, sequence, stored procedures; Insert sample data to Oracle

Week 2: Distributed Java Objects

Getting Started with BEA WebLogic Server 8.1: features and administration

Getting Started with EJB

Coding Remote Interface, Home Interface, Enterprise JavaBean class, and Client

Compiling and deploying EJB classes

Coding client class and run the application

Understanding Distributed Objects

Benefits and Limitations of Distributed Objects

Object Request Brokers and Name Servers

Transport Mechanisms (JRMP vs. IIOP); RMI over IIOP

Java and CORBA; EJB and CORBA

Technology Comparison: COM+, CORBA, RMI

JNDI: Java Naming and Directory Services

Binding and Locating Services

Relationships and Comparisons to other Naming Services: LDAP, COS , RMI

Issues in Systems Architectures

Reusable Business Components; Location of Services; Transaction Contexts

Database Mapping; Authentication and Integrity

Week 3: Session Beans

EJB Overview

What is EJB? Roles of Responsibility; Session vs. Entity EJB;

The EJB Server Model; EJB Containers

Session Beans

Design and Creation; Life Cycle; State Issues

Stored Procedures Mutate to Session Beans

Example: Pizza to Go (Pizza2Go) project

Stateless Session Beans

Example: Pizza Services, Order Services, and Outlet Services

The Stateless Front End

Putting It All Together: compiling, deploying the EJB classes, and running the application

EJB Deployment Descriptors

Access Control Lists; Control Descriptors; Identity Prorogation Transaction Scope;

Transaction Isolation Level; Creating EJB Jar Files

Stateful Session Beans

Example: Stateful Order Services

Calling Beans by Reference and other supporting methods

Stateful Client's View; Setting It Up

Week 4: Entity Beans

Entity Beans

More on Transactions

The Primary Key of an Entity Bean: Finder Methods

The Home Interface; Entity Bean Lifecycle

Container Managed Entity Beans

Order Master: The Home Interface and Remote Interface

Order Detail; The Client's View; Deploying Entity Beans

Bean Managed Entity Beans

Implementing Finder Methods in Bean-Managed Persistence

The Remote Interface and Bean Implementation

Client Use of the BMP Bean

Deploying the application

Design issues and Restrictions

Course Project: Online Trading System

Stock Client, Stock Remote Interface; Stock Home Interface; Stock Bean

Week 5: Java Messaging Services (JMS) and Java Transaction API (JTA)

JTA: Java Transaction Services

Overview of Transaction Processing

Two Phase Commit

User Transactions

Bean Managed Transactions

JMS: Java Messaging Service

Message Oriented Middleware

Providers, Messages and Domains

Point-to-Point Messaging

Publish/Subscribe Messaging

Understanding HTTP

HTML based Clients; Java based HTTP Clients / HTTP Tunneling

Servlets as EJB clients; Java Server Pages (JSP)

System Tuning

Resource Management; Thread and Connection pooling; Load Balancing; Fault Tolerance

Week 6: Wireless and Security

Wireless

Wireless Application Protocol ( WAP )

The Mobile Operators and Design Considerations

Wireless Markup Language ( WML )

The Pizza WAPplication

Security

Authentication

Secure Socket Layer ( SSL ): One-Way SSL; Two-Way SSL

HTTP Authentication; Form-Based Authentication; Cookies; URL Rewriting

Authorization

Access Control List ( ACL ): URL-Based ACLs and User-Defined ACLs

Security Realms

Caching Realm. LDAP Realm, UNIX Realm, NT Realm, RDBMS Realm

Securing the WebLogic Server

Designing for Enterprise JavaBeans

Textbook

(1) Required: Professional EJB

by P G Sarang; Wrox Press Inc; ISBN: 1861005083 (July, 2001)

(2) Optional: Enterprise Javabeans ( 3rd Edition, Oct. 2001)

by Richard Monson-Haefel ; O'Reilly & Associates; ISBN: 0596002262