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Java 2 Platform, Enterprise Edition (J2EE)

Java 2 Platform, Enterprise Edition (J2EE). J2EE and Other Java 2 Platform Editions. Source: Computer , August 2000. J2EE and Other Java 2 Platform Editions. Source: Sun Microsystems, Inc. Java Development and Runtime Environment.

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Java 2 Platform, Enterprise Edition (J2EE)

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  1. Java 2 Platform, Enterprise Edition(J2EE)

  2. J2EE and Other Java 2 Platform Editions Source: Computer, August 2000

  3. J2EE and Other Java 2 Platform Editions Source: Sun Microsystems, Inc.

  4. Java Development and Runtime Environment Source: P.J. Perrone and V.S.R.R. Chaganti, Building Java Enterprise Systems with J2EE

  5. Java 2 Platform Runtime Architecture Source: P.J. Perrone and V.S.R.R. Chaganti, Building Java Enterprise Systems with J2EE

  6. Java 2 Platform, Standard Edition (J2SE) Source: Sun Microsystems, Inc., http://java.sun.com/j2se/1.3/

  7. J2EE Components • Application Components: Application Clients, Applets, Servelets, JavaServer Pages, Enterprise Beans • Containers (including J2SE runtime) • Resource Manager Drivers • Database • Standard Services: HTTP/HTTPS, JTA, JDBC, JMS, JAAS, ...

  8. J2EE Architecture Source: Sun Microsystems, Inc., J2EE Specification v1.3

  9. J2EE Standard Services • HTTP/HTTPS • Java Transaction API (JTA) • JDBC • Java Message Service (JMS) • Java Authentication and Authorization Service (JAAS) • J2EE Connector Architecture • Others: RMI-IIOP, JavaIDL, JavaMail, JavaBeans Activation Framework (JAF), Java API for XML Parsing (JAXP)

  10. J2EE Interoperability Source: Sun Microsystems, Inc., J2EE Specification v1.3

  11. J2EE Platform Roles • J2EE Product Provider • Application Component Provider • Application Assembler • Deployer • System Administrator • Tool Provider

  12. 2-Tier Database Access Source: Sun Microsystems, Inc., JDBC 3.0 Specification

  13. 3-Tier Database Access Source: Sun Microsystems, Inc., JDBC 3.0 Specification

  14. The Connector Architecture • Integration of J2EE servers with Enterprise Information Systems (EIS) • EIS vendor-provided resource adaptors • Resource adaptor-permitting application servers

  15. System Level Pluggability Source: Sun Microsystems, Inc., J2EE Connector Architecture Specification

  16. Connector Architecture Overview Source: Sun Microsystems, Inc., J2EE Connector Architecture Specification

  17. Connector Architecture Overview Source: Sun Microsystems, Inc., J2EE Connector Architecture Specification

  18. Connector Architecture in B2B Scenario Source: Sun Microsystems, Inc., J2EE Connector Architecture Specification

  19. Enterprise JavaBeans (EJB) • EJB is an architecture for component-based transactional distributed computing. • An enterprise bean contains business logic that operates on the enterprise’s data. • Client access is mediated by a Container. • There are three kinds of enterprise beans: session beans, entity beans, and message-driven beans.

  20. Enterprise Bean Objects • Session objects: for a single client, short-lived, … • Entity objects: object view of data in the database, shared by multiple clients, long-lived, … • Message-driven objects: triggered by a single client message, short-lived, stateless, …

  21. Client View of an Enterprise Bean • Home Interface: methods for creating, removing, and finding bean instances • Remote Interface: methods callable by the client • Object Identity • Metadata Interface: mainly for dynamic invocation • Handle

  22. Client View of Session Beans Source: Sun Microsystems, Inc., Enterprise JavaBeans 2.0

  23. Accessing Enterprise Beans from Servlets/JavaServer Pages Source: Sun Microsystems, Inc., J2EE Specification, v1.3

  24. J2EE Deployment Source: Sun Microsystems, Inc., J2EE Specification, v1.3

  25. J2EE Application Life Cycle Source: Sun Microsystems, Inc., J2EE Connector Architecture Specification

  26. Overview of Enterprise Applications Integration (EAI) Source: P.J. Perrone and V.S.R.R. Chaganti, Building Java Enterprise Systems with J2EE

  27. Overview of Enterprise Applications Integration (EAI) Source: P.J. Perrone and V.S.R.R. Chaganti, Building Java Enterprise Systems with J2EE

  28. EAI with XML Source: P.J. Perrone and V.S.R.R. Chaganti, Building Java Enterprise Systems with J2EE

  29. An Example Mid-tier Design Source: Sun Microsystems, Inc., The J2EE Tutorial

  30. Enterprise Beans of the Example Design Source: Sun Microsystems, Inc., The J2EE Tutorial

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