1. Liran.zelkha@alunasoft.com

2. Aluna
 Israel’s leading Java/JavaEE and SOA
consulting company
 Customers:

3. Agenda
 Open Source Technologies
 New Java Technologies
 SOA
 Cloud Computing

4. Open Source Technologies
 Mass acceptance of open source technologies
 Operating system
◦ Linux
 Databases
◦ MySQL
 Application servers
◦ Jboss, Apache
 Programming frameworks
◦ Struts, Log4J, Commons
 Development environment
◦ Eclipse, Maven, PHP
 CMS
◦ Magnolia, Drupal

5. The Idea
 Software shouldn’t cost so much
 So common software is built by people
around the world, who also maintain it
 Real life:
◦ Not really the case
◦ Most open source projects are supported by
companies, with open source code, but with
support model

6. Business Plan
 Nothing comes for free
 Pay for support, legal, etc
 Support gives you bug fixes, longer
maintenance model

7. New Java Technologies
 JavaEE5 is here
 And so is:
◦ JSF
◦ EJB3 + JPA

8. JavaServer Faces and JSP
 JSF is specified to support JSP
◦ But is not required to use it
 JSF comes with two JSP base component
libraries
◦ Core - For application tasks
 Validation, Datatype conversion
◦ HTML - For rendering basic HTML
 Input fields, menus, tables button

9. JSF Technology
 A basic JSF application consists of:
◦ JSF UI components - encapsulated in JSP tag
libraries
◦ Navigation Model – defines rules for navigation
◦ Managed Beans - facilitate the UI logic of the
application
◦ Helper Objects – validation and conversion

10. JSF Components
 Basic building blocks of a JSF application
 Components can represent simple to
complex controls e.g. a button, a graph,
or a complete page.
 Can be associated to Model data objects
through Value Binding
 JSF components use helper objects:
validators, converters, listeners/events

11. JSF Component Model
 JSF Components consists of three things:
 UIComponents
◦ Functionality, definition, or behavior
 Renderers
◦ Converts components to and from a specific
markup language
 Render Kits
◦ Library of Renderers
◦ Basic HTML RenderKit is part of the
specification

12. What is JPA?
 JPA stands for a java persistence API which is
Javax. Persistence Package. Basically , it is a
Java programming Language framework that
helps developers to control relational data in
java platform. The JPA exactly was described
as part of the EJB3.0 , which is a
replacement to the EJB2CMP Entity Beans
specification, specification . As we know that
a java persistence API is the newest of
several Java persistence specifications.

13. What is persistence consists of.. ?
 Any persistence consists of there Areas:
 The API, defined in the Javax. Persistence
package
 The java persistence Query Language
 Object / relational meta data.

14. What JPA does exactly?
 JPA defined a runtime Entity Manger API
processing queries and transaction on the
objects against the database.
 It is defined a objects-level query
language JPQL to allow querying of the
objects from the database.

15. What is java persistence query
language is used for?
 Basically, JPQL stands for Java Persistence
Query Language. And it is used to make
queries for against entities stored in a
relational database. Queries resemble SQL
queries in syntax, but operate against
entity objects rather than directly with
database tables.

16. Sample Process of Using Java
Persistence API

17. Other Technologies
 Eclipse
 Maven
 Distributed Caching and grid
◦ Terracotta, Coherence, WebSphereXS

18. SOA
 Service Oriented Architecture
 A new architecture for our business
applications
 Benefits:
◦ Separation of responsibilities between different
services
◦ Easier maintenance
◦ Usage of BPM

19. Cloud Computing
 Better use of your computing resources
 Either internally (private cloud) or on the
internet (public cloud)
 Public cloud providers:
◦ Amazon EC2, Google AppEngine
 Your existing datacenter can become a
cloud
 Heavy dependency on VMs