Groovy and Grails
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A lightning talk on Groovy and Grails by Jean Barmash

A lightning talk on Groovy and Grails by Jean Barmash

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    Groovy and Grails Groovy and Grails Presentation Transcript

    • Groovy & Grails Jean Barmash CTO, EnergyScoreCards www.meetup.com/grails
    • Java:String[] names = new String[] {"Rod", "Carlos", "Chris"}for (String it : names) if (it.length() <= 4) System.out.println(it);Groovy:String[] names = [ "Rod", "Carlos", "Chris" ]for (String it : names) if (it.length() <= 4) System.out.println(it);Idiomatic Groovy:names = ["Rod", "Carlos", "Chris"]names.grep { it.size() <= 4 }.each{ println it }
    • Groovy LanguageDynamic Language for the JVMNative Integration with Java, cross-compilationAlmost-zero learning curve can rename .java to .groovyBacked by VMWare / SpringSourceOpen Source, Apache LicenseUnfortunate Name
    • Major FeaturesLess CeremonyClosuresNative collection syntax / processingMany Features for DSLAbstract Syntax Tree Transformation E.g. @Immutable, @SingletonTrivial XML / HTML / JSON ProcessingFunDid I say easy integration with Java?
    • Grails (www.grails.org)High Productivity Web FrameworkConvention over configurationBuilt on solid Java technologies Spring, Hibernate, QuartzGORM - Works with Hibernate, JPA, and NoSQL DbsPlugins - 699 plugins & growing (including clojure, scala)IDE Support2.0 In NovemberBacked by SpringSource / VMWareAwesome CommunityUnfortunate Name
    • Who Uses Groovy / GrailsNetflix (Internally)Sky.comLinkedInConde Naste (Wired)Example - clickOnero in Latin America 1.5 million users, 80k concurrent users, 8 tomcats, 5 Linux boxes, 1 mysql, 1 terracotta, 1 rabbitmqEnergyScoreCards :-)
    • Other Groovy ProjectsSpock Testing FrameworkGEB Functional Testing FrameworkGPARS - Concurrency FrameworkGradle - convention over configuration build frameworkGriffon - Swing FrameworkSome Other projects that offer Groovy support o Spring, Mule, NanoContainer, ServiceMix, Magnolia CMS, eXo, neo4j, Jenkins, o Many more at http://groovy.codehaus.org/Related +Projects
    • ReferencesGroovy Home Page http://groovy.codehaus.org/Related Projects http://groovy.codehaus.org/Related+ProjectsBlogs - http://groovyblogs.org/Groovy Magazine - http://www.groovymag.comGrails - www.grails.orgGrails Plugins - http://grails.org/plugin/category/allSpringSource - www.springsource.comGroovy / Grails Support http://www.springsource.com/support/groovyandgrailssupportConferences - Gr8Conf, SpringOne2GX SpringOne2GX - http://www.springone2gx.com/ Gr8Conf - http://www.gr8conf.org/NYC Groovy/Grails Meetup - http://www.meetup.com/grails/