J2EE Roles
J2EE Product Provider
Tool Provider
Application Component Provider
Application Assembler
Applicaton Deployer and System Administrator
J2EE Roles: J2EE Product Provider
Company that develops, markets, and sells an
Implementation of the J2EE architecture
Follows the various J2EE specifications and
validates the implementation using the CTS
(Compatibility Test Suite)
Typically operating system, ORB, database,
application server, and web server vendors
Examples:
BEA WebLogic, IBM WebSphere, Oracle 9iAS,
Borland Application Server, iPlanet Application
Server, etc, etc
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
J2EE Roles: Tool Provider
Company that creates development, assembly, and
packaging tools
Examples: Borland JBuilder Enterprise, WebGain
Studio, IBM VisualAge, Oracle JDeveloper,
Sun's Forte Enterprise
J2EE Roles: Application Component Provider
Company or person who creates web components,
enterprise beans, applets, or application clients for
use in J2EE applications
Writes Java interfaces and classes, HTML, JSP
pages, etc. and packages them as components into
ejb-jar, war, and jar files
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
J2EE Roles: Application Component Assembler
Company or person who gets application component
JAR files from component providers and assembles
them into a J2EE application EAR file
Writes or modifies XML deployment descriptors to
assemble an application using tools or by hand
Verifies the application is J2EE compliant
J2EE Roles: Applicaton Deployer and System
Administrator
Company or person who configures and deploys the
J2EE application, administers the computing and
networking infrastructure where J2EE applications
run, and oversees the runtime environment
Moves the J2EE EAR file to the J2EE server
Modifies EAR file for operational environment
Sets transaction controls and security
Manages clustering and failover
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
The EJB Roles
The EJB Development Process
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
J2EE Packaging
J2EE Components are packaging in component
specific jar files
ejb-jar for EJB Components
WAR files for Web Components (Servlets and
JSPs)
JAR files for client components
Enterprise ARchive files for J2EE applications
Includes ejb-jar, WAR, and JAR files
All J2EE component jar files contain an XML
deployment descriptor file
J2EE Packaging: WAR files
Contains HTML, JSP pages, Servlet .class
files, resource files, bitmap files, etc.
Can contain multiple web components
Has a web.xml deployment descriptor file
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
J2EE Packaging: ejb-jar files
Contains EJB home and remote interface files,
EJB file, helper classes, resource files, bitmap
files, etc.
Can contain multiple EJBS
Has an ejb-jar.xml deployment descriptor file
J2EE Packaging: EAR files
Contains application WAR, ejb-jar, and jar files
Includes application.xml deployment descriptor and
J2EE server specific XML deployment descriptor.
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
From Assembly to Deployment
J2EE Application Packaging
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
Deploying an EJB
The JNDI Environment for an EJB
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
An Application Client Deployment Descriptor
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.
J2EE Tools: The J2EE Reference Implementation
Complete J2EE architecture implementation
Not Intended (or licensed) for production deployment
Provides packaging, deployment, execution of J2EE
components, clients, and resource adapters
GUI and command line based tools
Includes Cloudscape database for storing SQL data
The J2EE RI Reference Implementation Deploytool
Copyright 2001-2002, Dan Harkey. All rights reserved. DO NOT COPY OR DISTRIBUTE.