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Making Java Development Fun

with Spring Roo

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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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Agenda

1. Problems of Java Development

2. Introduction to the Spring Roo

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Problems of traditional Java Applications

Pre warning message…

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Problem 1: Dam Complex!!!

Even primitive JEE application is complex by it’s nature

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Problem 2: Not DRY at all

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Problem 3: Developers are too conservative

Should we always

keep fall into

traditions and

close our eyes for

innovation?

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Problem 4: Boilerplate code

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Goal of Spring Roo

• Make Java Development Fun

• Eliminate JEE Complexity

• Boost programmers productivity

• KISS and DRY

• Use simple but powerful commands

• Pragmatic code generation

• Aspect Oriented Programming

• Use DDD and eliminate DAO

• Service layer is optional!

etc

Goals of Roo

Methods to achieve goals

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Word of warning!!!

Spring Roo is not a…

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What is a Spring Roo

Addon

Addon

Addon

Addon

Addon

RooCore

Developer

Spring Application

changes observes and

changes

controls

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Basic Spring Roo addons

Persistence

Dynamicfinders

SpringWebFlow

Spring Security

ProjectMgmt

Spring MVC

…

RooCore

Data

Web

Project

Configuration

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Spring Roo Core components

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Roo application development cycle

Project setup(project)

Configuration(e.g.

security setup)

Entity design(entity, field)

Web Setup(controller)

Only initial setupIterative use in

maintenance is

possible

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Let’s do some coding

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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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What has been generated during for web

Static templates

WebApplication

Roo Coregenerate

Developer

uses/controls (via shell)

JSPX web pages

JSPX tags for controls

Internationalization (i18n)

Spring JavaScript

generate

Spring MVC Controllerclass CustomerController {

...

}

Domain Model

source

CSS, Pictures etc

JSPX View page<div xmlns:jsp=“...”

...

</div>

uses

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Page Layout

layout.jspx base views

Header.jspx

menu.jspx

footer.jspx

Viewcustomer.jspx

product.jspxupdate.jspx

create.jspx

list.jspxloan.jspx

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Thank You!

What I missed?