The document introduces Spring Roo, a tool that aims to make Java development fun by eliminating complexity, boosting productivity, and following principles like KISS and DRY. It discusses problems with traditional Java applications like complexity, lack of DRYness, and boilerplate code. Spring Roo uses simple commands, pragmatic code generation, and aspects to generate basic application structures and address these problems. The core components and development cycle are explained, and examples are provided of entities, controllers, and JSPX views that Roo can automatically generate.

1. Making Java Development Fun
with Spring Roo
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2. Antons Kranga
• Qualification:
- 10+ years in Java
- Certified Technology Architect
- Java and OO Design Trainer
• Currently works in Accenture Architecture Innovation
• Specialized:
- Enterprise Application Design
- Enterprise Portals
• Likes:
- Martial Arts
- Embedded Devices
• WEB
- http://www.linkedin.com/in/antonskranga
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3. Agenda
1. Problems of Java Development
2. Introduction to the Spring Roo
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4. Problems of traditional Java Applications
Pre warning message…
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5. Problem 1: Dam Complex!!!
Even primitive JEE application is complex by it’s nature
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6. Problem 2: Not DRY at all
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7. Problem 3: Developers are too conservative
Should we always
keep fall into
traditions and
close our eyes for
innovation?
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8. Problem 4: Boilerplate code
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9. Goal of Spring Roo
Goals of Roo
• Make Java Development Fun
• Eliminate JEE Complexity
• Boost programmers productivity
• KISS and DRY
Methods to achieve goals
• Use simple but powerful commands
• Pragmatic code generation
• Aspect Oriented Programming
• Use DDD and eliminate DAO
• Service layer is optional!
etc
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10. Word of warning!!!
Spring Roo is not a…
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11. What is a Spring Roo
Addon
Addon
Addon
controls Roo
Core
Developer
Addon Addon
changes observes and
changes
Spring Application
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12. Basic Spring Roo addons
Data
Persistence
Dynamic
Project finders
Mgmt
Roo
Core
Spring
Spring MVC
Security
… Spring
Web Web
Flow
Project
Configuration
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13. Spring Roo Core components
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14. Roo application development cycle
Iterative use in
Only initial setup maintenance is
possible
Configuration
Project setup Entity design Web Setup
(e.g.
(project) (entity, field) (controller)
security setup)
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15. Let’s do some coding
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16. Spring Roo UI concept
• Model-View-Controller
(MVC) concept
• Rich UI controls (free type
dropdown lists etc)
• JavaScript used to improve
user experience
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17. What has been generated during for web
uses/controls (via shell)
Domain Model
Developer source
generate
Roo Core
Web
Application
generate
Spring MVC Controller
class CustomerController {
Static templates ...
}
JSPX tags for controls
Internationalization (i18n) JSPX View page
<div xmlns:jsp=“...”
Spring JavaScript ...
</div>
JSPX web pages uses
CSS, Pictures etc
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18. Page Layout
layout.jspx base views
Header.jspx
customer.jspx
menu.jspx View create.jspx
update.jspx product.jspx
footer.jspx
list.jspx
loan.jspx
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19. Thank You!
What I missed?
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