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10 Years of Groovy

H
HamletDRC

This document summarizes the history and development of Groovy from 2003 to 2012 in 3 sentences or less: Groovy was created in 2003 and initially focused on adding closures and markup builders to Java, with additional features like templates and XML parsing added through 2004. Over the following years Groovy expanded to include tools like Gant, mocking, JSON builders, and annotations. By 2012 Groovy had become a popular and widely used JVM language with many features and tools for building applications.

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A Very Groovy Birthday Hamlet D'Arcy
Canoo Engineering AG
@HamletDRC
A Very Groovy Birthday Geneva JUG – 2 Years
Hamlet D'Arcy
Canoo Engineering AG
@HamletDRC
A Very Groovy Birthday Geneva JUG – 2 Years Groovy – 10 th Year
Hamlet D'Arcy
Canoo Engineering AG
@HamletDRC
2003
2003
2003 Closure
“Refactored CompositeString to be called ______ :)”
2003 Closure GString
2003 Range Closure GString
2003 Range MarkupBuilder Closure GString
new groovy.xml.MarkupBuilder().root() { ( 1 .. 3 ).each { child(id: "child $it " ) } }
new groovy.xml.MarkupBuilder().root() { ( 1 .. 3 ).each { child(id: &quot;child $it &quot; ) } } <root> <child id='child1' /> <child id='child2' /> <child id='child3' /> </root>
2004 2003 Range MarkupBuilder Closure GString
2004 2003 JSR-241 Range MarkupBuilder Closure GString
2004 2003 JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
def text = '''Dear $person, So nice to meet you in <% print city %>. Sincerely, $signed''' def vars = [person: 'JUG' , city: 'Geneva' , signed: 'Hamlet' ] def engine = new groovy.text.SimpleTemplateEngine() engine.createTemplate(text).make(vars)
def text = '''Dear $person, So nice to meet you in <% print city %>. Sincerely, $signed''' def vars = [person: 'JUG' , city: 'Geneva' , signed: 'Hamlet' ] def engine = new groovy.text.SimpleTemplateEngine() engine.createTemplate(text).make(vars) Dear JUG, So nice to meet you in Geneva. Sincerely, Hamlet
2005 2004 2003 JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
2006 2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
2006 2005 2004 2003 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.1-0.3
String. class .metaClass.default = { self -> self ?: '<unknown>' } '' .default()
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
@Grab( group= 'org.ccil.cowan.tagsoup' , module= 'tagsoup' , version= '1.2' ) import org.ccil.cowan.tagsoup.Parser def parser = new XmlParser(new Parser()) def url = 'http://twitter.com/hamletdrc' def html = parser.parse(url)
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
def (x, y) = [ 1 , 2 ] @Singleton, @Lazy, @Immutable, @Delegate, ... and more
def (x, y) = [ 1 , 2 ] assert x == 1 assert y == 2
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
Command Chains stand 7.minutes at busstop ride 10.stops on bus towards Basel
JSON Builder import groovy.json.* def json = new JsonBuilder() json.person { name 'William Tell' status 'mythological' }
AST Transformations @ToString, @EqualsAndHashCode @TupleConstructor, @Canonical @Log, @Field, @Package, ... and many more
2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0 0.17 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 2.0 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0 0.17 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } }
@groovy.transform.TypeChecked void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } }
@groovy.transform.TypeChecked void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } } 1 compilation error: [Static type checking] - Cannot find matching method java.lang.String#toUppercase() at line: 4, column: 43
void method(Object message) { if (message instanceof String) { log.info( &quot;Received input: &quot; + message.toUpperCase() ); } }
@groovy.transform.TypeChecked void method(Object message) { if (message instanceof String) { log.info( &quot;Received input: ${ message.toUpperCase() }&quot; ) } }
def keys = [x: 1 ,y: 2 ,z: 3 ] *.key def values = [x: '1' ,y: '2' ,z: '3' ] *.value keys*.toUpperCase() values*.toUpperCase()
Dimension d1 = [ 100 ] Dimension d2 = [ '100' , '200' ] Dimension d3 = new Dimension( width: 100 , height: 100 , depth: 100 )
@groovy.transform.TypeChecked – Not a static compiler – No new syntax – No new semantics – Bytecode not changed – Targeted at Java developers

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10 Years of Groovy

  • 1. A Very Groovy Birthday Hamlet D'Arcy
  • 4. A Very Groovy Birthday Geneva JUG – 2 Years
  • 8. A Very Groovy Birthday Geneva JUG – 2 Years Groovy – 10 th Year
  • 12. 2003
  • 13. 2003
  • 15. “Refactored CompositeString to be called ______ :)”
  • 18. 2003 Range MarkupBuilder Closure GString
  • 19. new groovy.xml.MarkupBuilder().root() { ( 1 .. 3 ).each { child(id: &quot;child $it &quot; ) } }
  • 20. new groovy.xml.MarkupBuilder().root() { ( 1 .. 3 ).each { child(id: &quot;child $it &quot; ) } } <root> <child id='child1' /> <child id='child2' /> <child id='child3' /> </root>
  • 21. 2004 2003 Range MarkupBuilder Closure GString
  • 22. 2004 2003 JSR-241 Range MarkupBuilder Closure GString
  • 23. 2004 2003 JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 24. def text = '''Dear $person, So nice to meet you in <% print city %>. Sincerely, $signed''' def vars = [person: 'JUG' , city: 'Geneva' , signed: 'Hamlet' ] def engine = new groovy.text.SimpleTemplateEngine() engine.createTemplate(text).make(vars)
  • 25. def text = '''Dear $person, So nice to meet you in <% print city %>. Sincerely, $signed''' def vars = [person: 'JUG' , city: 'Geneva' , signed: 'Hamlet' ] def engine = new groovy.text.SimpleTemplateEngine() engine.createTemplate(text).make(vars) Dear JUG, So nice to meet you in Geneva. Sincerely, Hamlet
  • 26. 2005 2004 2003 JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 27. 2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 28. 2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 29. 2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 30. 2006 2005 2004 2003 XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString
  • 31. 2006 2005 2004 2003 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
  • 32. 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
  • 33. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 0.1-0.3
  • 34. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.1-0.3
  • 35. String. class .metaClass.default = { self -> self ?: '<unknown>' } '' .default()
  • 36. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 37. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 38. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 39. 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 40. 2008 2007 2006 2005 2004 2003 Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 41. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0, 1.5 0.4-0.7 0.1-0.3
  • 42. @Grab( group= 'org.ccil.cowan.tagsoup' , module= 'tagsoup' , version= '1.2' ) import org.ccil.cowan.tagsoup.Parser def parser = new XmlParser(new Parser()) def url = 'http://twitter.com/hamletdrc' def html = parser.parse(url)
  • 43. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 44. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 45. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 46. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 47. 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 48. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 49. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 50. def (x, y) = [ 1 , 2 ] @Singleton, @Lazy, @Immutable, @Delegate, ... and more
  • 51. def (x, y) = [ 1 , 2 ] assert x == 1 assert y == 2
  • 52. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 53. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 54. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 55. 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 56. 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 57. 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 58. 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 59. 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 60. 2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 61. 2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 62. Command Chains stand 7.minutes at busstop ride 10.stops on bus towards Basel
  • 63. JSON Builder import groovy.json.* def json = new JsonBuilder() json.person { name 'William Tell' status 'mythological' }
  • 64. AST Transformations @ToString, @EqualsAndHashCode @TupleConstructor, @Canonical @Log, @Field, @Package, ... and many more
  • 65. 2011 2010 2009 2008 2007 2006 2005 2004 2003 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 66. 2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 67. 2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0 0.17 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 68. 2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 2.0 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0 0.17 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3
  • 69. void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } }
  • 70. @groovy.transform.TypeChecked void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } }
  • 71. @groovy.transform.TypeChecked void method(String message) { if (message != null ) { log.info( &quot;Received input: ${ message.toUppercase() }&quot; ) } } 1 compilation error: [Static type checking] - Cannot find matching method java.lang.String#toUppercase() at line: 4, column: 43
  • 72. void method(Object message) { if (message instanceof String) { log.info( &quot;Received input: &quot; + message.toUpperCase() ); } }
  • 73. @groovy.transform.TypeChecked void method(Object message) { if (message instanceof String) { log.info( &quot;Received input: ${ message.toUpperCase() }&quot; ) } }
  • 74. def keys = [x: 1 ,y: 2 ,z: 3 ] *.key def values = [x: '1' ,y: '2' ,z: '3' ] *.value keys*.toUpperCase() values*.toUpperCase()
  • 75. Dimension d1 = [ 100 ] Dimension d2 = [ '100' , '200' ] Dimension d3 = new Dimension( width: 100 , height: 100 , depth: 100 )
  • 76. @groovy.transform.TypeChecked – Not a static compiler – No new syntax – No new semantics – Bytecode not changed – Targeted at Java developers
  • 77. def v = 1 v = v.toString() println v.toUpperCase()
  • 78. Flow Sensitive Typing def v = 1 v = v.toString() println v.toUpperCase()
  • 79. Flow Sensitive Typing def v = 1 v = v.toString() println v.toUpperCase() – Under discussion
  • 80. int fib(int i) { i < 2 ? 1 : fib(i - 2 ) + fib(i - 1 ) }
  • 81. @groovy.transform.CompileStatic int fib(int i) { i < 2 ? 1 : fib(i - 2 ) + fib(i - 1 ) }
  • 82. @groovy.transform.CompileStatic – Is a static compiler – No new syntax – Requires new semantics – Bytecode is changed
  • 83. @groovy.transform.CompileStatic – Is a static compiler – No new syntax – Requires new semantics – Bytecode is changed – InvokeDynamic?
  • 84. 2011 2010 2009 2008 2007 2006 2005 2004 2003 2012 2.0 @Grab Gant 0.3 Duration MockFor XmlSlurper JSR-241 SimpleTemplateEngine Range MarkupBuilder Closure GString 1.0 1.0 0.17 1.0 1.8 2.0 1.3 0.9 0.4, 0.5 1.6, 1.7 1.1, 1.2 1.0 1.0, 1.5 0.4-0.7 0.1-0.3