Spring Roo and the Cloud (Tutorial) [5th IndicThreads.com Conference On Java, Pune, India]

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Spring Roo and the Cloud

Shekhar Gulati

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Hi, my name is...Shekhar Gulati

• Work for Xebia India

• Spring enthusiast (these days )

• Blogger and Writer(JavaLobby and Developer.com)

• sgulati@xebia.com

• Twitter : shekhargulati

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Agenda

• Introducing Roo

• Demo for Unbelievers

• Under the Hood

• Capability areas (lots of demo)

• Cloud Support

• Removing Roo

• Conclusion and Q&A

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Spring’s Mission

#J2EE or JavaEE should be easier to use

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Mission Accomplished !

Now What?

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Spring Roo

Development Tool

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Spring Roo Mission

Roo's mission is to

fundamentally and sustainably

improve Java developer

productivity without

compromising engineering

integrity or flexibility

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What is Roo?

• Rapid Development Tool for Spring

• Development time only• No Runtime

• No Negative Performance Impact

• No Memory Overhead

• No Roo Deployment

• Uses Best of Breed• Spring 3, Spring Security, Spring MVC / Web Flow

• Junit, Log4J, Maven, AspectJ, Eclipse

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Why should we use Roo?

• Easy Configuration

• Great Learning Tool

• Spring Best Practices

• Restful Web Services, JPA persistence, Security, Integration tests, Selenium test cases, JMS

• Standards

• Bean validation, Dependency Injection

• Powerful Features

• GWT, SOLR, DBRE, NoSQL, Spring Integration (coming soon)

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Demo for Unbelievers

Demo # 1 – A Simple Web Application

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Features Covered

• Project management

• Persistence

• Entity support

• Field Management

• JUnit testing

• Spring MVC Controllers, Selenium testing

• Logging

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Under the Hood

• Implementation Overview

• Code Generation

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Implementation Overview

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Code Generation Approach

• Passive Generation

• Active Generation

• Roo is a Hybrid code generation

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Active Generation

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Demo # 2 Let’s Secure the app

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Demo # 3 Speaker should get an Email

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Demo # 4 Application speak Dutch

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Demo # 5 How social is your app?

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Demo # 6 Have an Existing Database

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Cloud Support

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# Demo 7 – Moving to Cloud

• Changes to make

• persistence setup (Google App Engine)

• gwt set up

• add aspects for key generation

• Remove constraints (unique)

• do mvn gwt:compile gae:deploy

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Issues on Google App Engine

• Spring MVC app does not work

• Relationships do not work

• Integration tests do not work (ROO-1711)

• Constraints do not work

• Enum does not work

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Removing Roo from app

• Use AJDT's "push-in refactoring" feature

• This moves the Roo .aj content into normal .java files

• Remove @Roo* annotations from .java files

• Regular expression (\n.*Roo.*\n) find/replace in eclipse

• Remove Roo's annotation JAR from your POM

• dependency remove command

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Features Not Covered

• JMS support

• JSON support

• SOLR support (Search)

• Spring Web Flow

• Add-on creation

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Future Sneak Peak

• Spring Integration support

• Better Google App Engine support

• More view technologies support

• NoSQL support

• Ne04j

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Resources & Links

• Home http://www.springsource.org/roo/

• Forum http://forum.springsource.org

• Issues http://jira.springframework.org/browse/ROO

• Twitter @SpringRoo

• Twitter #roo hash key

• https://github.com/shekhargulati/spring-roo-playground

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Conclusion and Q & A

• Roo delivers serious productivity gains for Java

• Popular, mature libraries you already know

• Easy to learn and use

• No runtime, no lock-in, no risk

• ITDs separate clearly generated from non-generated code

• Questions?