javacro 2014 semamestreet grails 2 speech

Can You tell me how to get to Sesame Street? I wanna be a Grails rookie star there!

Fernando Redondo Ramírez

@pronoide_fer

Roadmap

• About me

• A brief introduction…

• Hands on!

About Me• Entrepreneur and Business Manager at Pronoide

since 2003

• Java & Friends Trainer (JEE, Spring, Groovy, Maven, Jenkins, Sonar,

Weblogic, Jboss, Websphere, Disco dancing and so )

• Doing things with Java from 1999 on

• Computer Engineer

• Happily married and proud father of two children who

love all Sesame Street stuff

A brief introduction

- Just another Grails speech (jags)?

- Yes indeed!, but:

• We’ll build it all from scratch

• We’ll leverage Grails 2.3

• We’re going to do a lot of tests

• We’ll deal with the whole app

code

• We won’t use Scaffolding ;)

• No plugins are necessary

A brief introduction- But, What is Grails?

- Grails isn’t only another web development framework, but it’sa full web development platform:• Embedded Servlet Container (Tomcat)

• Database Manager (H2 database)

• Scaffolding

• Dependency management through Gant(and Maven)

• Application packaging (war)

• Test runner (unit, integration, functional) (Junit, Spock)

• Uses Groovy language

• Extensible with plugins

• And much more!

A brief introduction

- Grails App Architecture

- Grails paradigms (more buzz words)

• NIH (Not Invented Here)

• CoC (Convention over Configuration)

• DRY (Don’t Repeat Yourself)

Hands on (Later at home)!

Before start, you have to…

1. Install Git in your computerhttp://git-scm.com/book/en/Getting-Started-Installing-Git

2. Download Groovy/Grails Tool Suite 3.5 https://spring.io/tools/ggts/all

3. Start Groovy/Grails Tool Suite 3.5 (GGTS) and choose

or create a workspace (remember run it with a JDK)

4. Download http://pronoide.com/downloads/javacro2014-grails2-

sesamestreet.zip and unzip it into workspace folder.

5. Pace yourself! It’s all quite straightforward…

Stage I: Create web application

i. Create webapp (create-app sesame-street)

note: it’s not necessary if you choose the Git way. (see

appendix at the end of this)

Stage II: Create domain

ii. Create the domain classes (create-domain-class

sesamestreet.Muppet)


iii. Define properties, constants, constraints and mappings


iv. Let’s complete the unit test (Spock’s way)


v. Run unit tests (test-app)


vi. Create an integration test (create-integration-test ),

and run it (test-app integration:)


vii. Let’s change database config and run again (test-app

integration:)

Stage III: Create business layer

viii. We have to create the service skeleton

(create-service sesamestret.MuppetDiscovery)


ix. First, let’s write the unit test and run it (test-app

-unit sesamestreet.MuppetDiscoveryServiceUnitTests)


x. Implement this service and its logging


xi. Create an integration test and run all tests (test-app)

Stage IV: Create web layer

xii. Create our controller and its code

(create-controller sesamestreet.MuppetDiscovery)


xiii. First of all, let’s write down a unit test for the controller


xiv. Create integration test for controller too!


xv. Let’s write down the initial GSP page of searches


xvi. GSP page for the best matched muppet


xvii. GSP page for no matched muppets


xviii. Presentation fine tuning (main.gsp/main.css)

Stage V: Run Webapp

xix. Start the web application (run-app)

Stage V: Run Webapp

xx. Load initial data and map default controller

Stage V: Run Webapp

xxi. Play with the database

Stage V: Run Webapp

xxii. Play with the webapp

We're done!

I wish I had had this app 4 years ago

for entertaining the kids… But at

the present time, a new period

begins at home: Superheroes and

fairies, but that remains for my next

year JavaCro talk…

Thanks!@pronoide_fer

https://github.com/fredondo/

[email protected]

http://pronoide.com

Apendix: Hands on (Later at home)! Navigate along the proyect code with git presenter

1. Install jruby or rubyhttp://jruby.org/getting-startedhttps://www.ruby-lang.org/en/installation/

2. Install git presenter (gem install git_presenter)

3. When the code is ready use the "git-presenter init" command to initialize

4. Once it is initialized you can start the presentation with "git-presenter start"

5. Then use the following commands to navigate the presentation

• next/n: move to the next slide (commit)

• back/b: move to the back slide (commit)

• end/e: move to the end of presentation

• start/s: move to the start of presentation

• list/l : list slides in presentation

• help/h: display this message

Apendix: Stage I: Create web application

i. Import webapp (File/Import/Git/Proyect from Git)

note: it’s compulsory if you choose the git way

javacro 2014 semamestreet grails 2 speech

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