Spring Roo Anton Kranga Java User Group Latvia www.jug.lv June 2011

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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