Tomas Grails
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This document summarizes a presentation given by Tomas Lin on using Grails for Flex and Java developers. The presentation introduces Grails, highlighting four cool things about it including its ready-to-go configuration and use of the Groovy programming language. It demonstrates how to build a basic Grails application and explores integrating Grails with Flex using plugins for scaffolding and BlazeDS. The document concludes by discussing other Grails and Flex integration options and taking questions.
Tomas Grails
- 1. What can Grails do for me? An intro to Grails for Flex and Java developers Flex on Java Exchange, London, June, 2010 Tomas Lin ( @tomaslin ) Wednesday, 16 June 2010
- 2. Life is too short for XML Wednesday, 16 June 2010
- 3. Agenda • Who is this guy? • 4 Cool Things About Grails. • Building a Grails app. • Flex and Grails - grails flex scaffold demo. • Flex and Grails - blazeds4 plugin demo • Questions? Wednesday, 16 June 2010
- 4. Who is this guy? • Don’t worry, I’m not trying to sell you anything. • Currently a senior developer at DMC digital • Java / UI Developer since 2000. • Worked with Grails and Flex for about 2.5 years. • Canadian citizen born in Taiwan, raised in Guatemala and working in the UK. Wednesday, 16 June 2010
- 5. Blue Ember Grills Flex 3 & Grails Wednesday, 16 June 2010
- 6. Suzuki Canada Flex 3 & Grails Wednesday, 16 June 2010
- 7. Dan Aykroyd Wines HTML, CSS, Flex 3, Grails Wednesday, 16 June 2010
- 8. Empora.com Content Management System Adobe AIR Wednesday, 16 June 2010
- 9. Grails • An open source web framework inspired by Rails and Django. • http://www.grails.org • Supported by VMWare / SpringSource Wednesday, 16 June 2010
- 10. Grails • Sky.com • Walmart • Wired • LinkedIn • Businessweek.in • Suzuki.ca • Tacobell.ca • Deutsche Bank Wednesday, 16 June 2010
- 11. 4 cool things about Grails Wednesday, 16 June 2010
- 12. Cool Thing #1: Ready to Go Spring Framework Hibernate ( GORM ) Quartz ( jobs ) Sitemesh ( layouts ) Spring MVC ( webflow ) Prototype / Scriptaculous Ant Ivy HSQLDB Tomcat Wednesday, 16 June 2010
- 13. Cool Thing #2 : Groovy • Java’s best friend • Dynamic JVM language with full support for Java objects and libraries. • Compiles to Java Bytecode. • Closures, builders, dynamic typing, etc... • More relaxed, script-like syntax • Features of Smalltalk, Python, Ruby Wednesday, 16 June 2010
- 14. Text Text Java . But also Groovy . original author of this slide is Marcel Overdijk - Wednesday, 16 June 2010
- 15. • Dynamic types using the def keyword • Optional return types • Everything is public by default • Optional semicolons, parentheses • Variable interpolation via GStrings • Automatic setters and getters original author of this slide is Marcel Overdijk - Wednesday, 16 June 2010
- 16. Healthy ecosystem • gPars - parallel processing • Groovy++ - static typing • Spock - data / behaviour driven testing and specifications framework • Gaelyk - lightweight web framework for the Google App Engine • Tellurium - automatic UI based testing framework based on Selenium. • Griffon - Swing / Desktop applications. Wednesday, 16 June 2010
- 17. Cool Thing #3 : 426 Plugins Wednesday, 16 June 2010
- 18. Cool Thing #4: Flex + Flash Integration BlazeDS GraniteDS Grails Flex Scaffold Openlaszlo JW FLV Media Library sIFR Red5 Video Wednesday, 16 June 2010
- 19. Building a Grails application ( woohoo! ) Wednesday, 16 June 2010
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- 23. Grails Flex Scaffold • Developed by Cubika in Argentina • Flex 3, Cairngorm, Stark Security @eapfel Wednesday, 16 June 2010
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- 25. BlazeDS plugin • Developed by Sébastien Arbogast • BlazeDS, Spring-Flex Integration • Spring Security @ sarbogast Wednesday, 16 June 2010
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- 27. Web Services • Sometimes we can’t use BlazeDS / AMF • REST - built in content negotiation • SOAP / WSDL - via plugins like XFire, CXF or Spring WS Wednesday, 16 June 2010
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- 29. Notes • The Java introspector in Flash Builder 4 does not work with Groovy classes, but you can use the DTO plugin to automatically generate Java DTOs and cast between Java / Groovy. • There are a few plugins that aid with Hibernate LazyInitialization issues. Gorm Labs, for example, dehydrates Hibernate sessions before being sent across the wire. • IDE Support is actually quite good. My IntelliJ trial expired yesterday. STS and Netbeans also do Grails. Wednesday, 16 June 2010
- 30. Other uses. • Tag libraries for embedding SWFs, providing alternative content for SEO. • Adding server side search via Lucene or Solr. • Deployment platform for Amazon / App Engine. • A nice proxy to bypass Flash Security restrictions. • Backend glue to PHP / Clojure. • Data import / massaging. Wednesday, 16 June 2010
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- 32. Flex / Grails Wish List • Flash Builder extension for Grails • UI Testing automation • Integration with Model Driven Development / LiveCycle services. • A clear way to deal with Hibernate sessions. • A way to template frameworks like Parsley, Robotlegs or PureMVC • Better integration with messaging options. Wednesday, 16 June 2010
- 33. Why do I like Grails? • Allows me to build backends to my Flex applications quickly and effectively. • Integrates well with existing Java libraries. • Lets me try new things fairly risk free. • Encourages modular development / re-use. • Constantly getting better. • Makes writing web applications fun. Wednesday, 16 June 2010
- 34. Learn More! Wednesday, 16 June 2010 grails.org/books
- 35. Learn More! • http://www.grails.org • Come to the user group meetings. • Third Monday every month. Here. • Grails mailing list. • twitter: @tomaslin • email: tomaslin@gmail.com Wednesday, 16 June 2010
- 36. Questions? Wednesday, 16 June 2010