The report of JavaOne2011 about groovy

Transcript

1. 4UBOE
   CZ
   +BWB http://www.flickr.com/photos/compujeramey (SPPWZͷ࢖͍Ͳ͜Ζ ͭͷಋೖύλʔϯ 2011 ೥ ౓ ൛ 5IF
   TFWFO
   (SPPWZ
   VTBHF
   QBUUFSOT
2. 8IP
   BN
   * 㾎ࢯ໊ɿத໺
   ༃࣏ʢBLB
   OPCFBOTʣ 㾎ॴଐɿ/55ιϑτ΢ΣΞגࣜձࣾ 㾎ϒϩάɿ౾ແ೔ه
   
   
   
   
   
   
   
   
   
   
   
   IUUQEIBUFOBOFKQOPCFBOT 㾎ϓϩμΫτɿ
   
   
   
   
   
   
   
   
   
   
   
   IUUQTHJUIVCDPNOPCFBOT
3. $ time groovy -e 'println "Hello, world!";' Hello, world! real 0m1.177s user 0m1.321s sys 0m0.171s $ time groovyclient -e 'println "Hello, world!";' Hello, world! real 0m0.029s user 0m0.001s sys 0m0.002s
4. (SPPWZʙ ͰHSPPWZTFSWFS͕ى ಈ͠ͳ͍ࣄ৅͕ʂ http://jira.codehaus.org/browse/GROOVY-5101
5. (SPPWZͰ࢖͏ ͔ɺ࢑ఆରॲΛೖΕͨ࠷ ৽ιʔε͔ΒϏϧυ͠ͳ ͓͍ͯͩ͘͠͞PS[ https://github.com/downloads/kobo/groovyserv/ groovyserv-0.10-SNAPSHOT-21eda1f.jar
9. http://gihyo.jp/book/2011/978-4-7741-4727-7 ٕज़ධ࿦ࣾΑΓ ઈࢍൃചத
10. &YUFOEJOH
    +BWBT
    3FBDI
    XJUI
    (SPPWZ
    4FWFO
    4DFOBSJPT
11. ষ
12. (SPPWZʙࣣͭͷಋೖύλʔϯ ສೳ઀ணࡎ
    4VQFS
    (MVF ΍ΘΒ͔ͳ৺ଁ
    -JRVJE
    )FBSU εϚʔτઃఆ
    4NBSU
    $POpHVSBUJPO ಺ࢹڸखज़ ,FZIPMF
    4VSHFSZ ແ੍ݶͷղ์
    6OMJNJUFE
    0QFOOFTT ϓϩτλΠϓ
    1SPUPUZQF খਓ͞ΜεΫϦϓτ
    )PVTF&MG ೥౓൛
13. (SPPWZʙࣣͭͷಋೖύλʔϯ ສೳ઀ணࡎ
    4VQFS
    (MVF ΍ΘΒ͔ͳ৺ଁ
    -JRVJE
    )FBSU εϚʔτઃఆ
    4NBSU
    $POpHVSBUJPO ಺ࢹڸखज़ ,FZIPMF
    4VSHFSZ ແ੍ݶͷղ์
    6OMJNJUFE
    0QFOOFTT ϓϩτλΠϓ
    1SPUPUZQF
    খਓ͞ΜεΫϦϓτ
    )PVTF&MG ೥౓൛
14. (SPPWZʙࣣͭͷಋೖύλʔϯ ສೳ઀ணࡎ
    4VQFS
    (MVF ΍ΘΒ͔ͳ৺ଁ
    -JRVJE
    )FBSU
    ϦοϓεςΟοΫ -JQTUJDL ಺ࢹڸखज़ ,FZIPMF
    4VSHFSZ
    ແ੍ݶͷղ์
    6OMJNJUFE
    0QFOOFTT ΰʔετϥΠλʔ (IPTU
    8SJUFS খਓ͞ΜεΫϦϓτ
    )PVTF&MG ೥౓൛
15. ͭͣͭ ঺հ͍͖ͯ͠·͢
16. 
    ສೳ઀ணࡎ 4VQFS
    (MVF http://www.flickr.com/photos/yto/
17. ສೳ઀ணࡎ
    4VQFS
    (MVF
    +BWB
    Ͱ࡞ΒΕͨطଘͷίϯϙʔωϯτ΍ϑϨʔϜ ϫʔΫΛ(SPPWZ
    Λάϧʔ ކ
    ͱͯ͠౷߹͢Δ ݎ࿚ੑ΍ύϑΥʔϚϯε͕ඞཁͱ͞ΕΔج൫΍ओཁ ίϯϙʔωϯτͰ+BWBͷڧΈΛ׆͔͢ ॊೈੑ΍ढ़හੑ͕ඞཁͱ͞ΕΔϏϡʔ΍ίϯτϩʔ ϥͷϨΠϠͰ
    (SPPWZͷڧΈΛ׆͔͢
18. ͨͱ͑͹ 9.-1BSTFSɺ+BWBͷωοτϫʔΫ"1*ɺ4XJOHΛ૊ Έ߹Θͤͯɺ(SPPWZؔ܎ͷ೔ຊޠϒϩάͷҰཡΛද ࣔͯ͠ΈΔ
19. (SPPWZίʔυ // this pipe generated by kiyotaka def url = 'http://pipes.yahoo.com/pipes/pipe.run?_id=081f8f5039 194af0f25909129d6d007d&_render=rss' def items = new XmlParser().parse(url).channel.item def cols = 'pubDate title description'.tokenize() groovy.swing.SwingBuilder.build { frame(id:'f', title: 'Japanese Groovy Blogs', visible:true) { scrollPane { table { tableModel(list: items) { cols.each { col -> closureColumn header: col, read: { it[col].text() } } } } } } f.pack() }
20. ࣮ߦ݁Ռ
21. 
    ΍ΘΒ͔ͳ৺ଁ -JRVJE
    )FBSU http://www.flickr.com/photos/luilainez
22. ΍ΘΒ͔ͳ৺ଁ෦
    -JRVJE
    )FBSU +BWBͰڧݻͳΞϓϦέʔγϣϯߏ଄Λߏங͠ɺγε ςϜͷத֩ʹҐஔ͢ΔɺมԽ͠΍͍͢Ϗδωεϩ δοΫͷ෦෼͚ͩΛ(SPPWZ PS
    (SPPWZʹΑΔ%4- ͰॊೈʹεΫϦϓςΟϯά͢Δ සൟʹมΘΔෳࡶͳϏδωεϧʔϧΛ࣋ͭΞϓϦ έʔγϣϯྖҬʹಛʹద͍ͯ͠Δ
23. ͨͱ͑͹ Ϙʔφεͷ഑෼ϩδοΫ͚ͩॊೈʹ͍ͨ͠
24. 
    ϦοϓεςΟοΫ -JQTUJDL New!! http://www.flickr.com/photos/taniasaiz
25. ϦοϓεςΟοΫ
    -JQTUJDL (SPPWZͷ͋ΒΏΔػೳɾϓϩμΫτΛ࢖ͬͯίʔυ ΛಡΈ΍͘͢͢Δ (%,
    (SPPWZ
    #FBOT
    (1BUI
    -JTUT
    .BQT
    $BMMBCMF
    9.-
    42-
    $PNNBOE
    DIBJOT
    (1BST
    4DSJQUPN
    ͳͲ ͳͲ ಛʹʮ%4-ʯ (SPPWZ͔Βɺ%4-͕ΑΓॻ͖΍͘͢ͳͬͨ ʢಛఆ৚݅ԼͰʣϝιουݺग़ͷׅހ͕লུͰ͖Δ
26. ͨͱ͑͹ invite “You” to javaone
27. ͨͱ͑͹ invite(“You”).to(javaone)
28. ίʔυҰࣜ def invite(subject) { [ to : { target -> target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone)
29. ·ͣ͸JOWJUFϝιουͷݺग़ def invite(subject) { [ to : { target -> target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone)
30. ΫϩʔδϟΛؚΉ.BQΛฦͯ͠ def invite(subject) { [ to : { target -> target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone) Ωʔ͕lUPzɺ஋͕ΫϩʔδϟͷΤϯ τϦ͚ͩΛ࣋ͭ.BQ͕SFUVSO͞ΕΔ
31. ͦͷΫϩʔδϟΛݺग़͢ʂ def invite(subject) { [ to : { target -> target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone) ͜ͷΫϩʔδϟͷݺग़ʹͳΔ
32. ݁ہ͜͏͍͏͜ͱ def invite(subject) { [ to : { target -> target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone) ݁ہ͸͜Εˣ͕࣮ߦ͞Εͨͷͱಉ͡ javaone.add(“You”)
33. %4-ͷͨΊͷ࢓ࠐΈΛཪʹӅͯ͠͠·͑͹ invite “You” to javaone ίʔυ͸ͱͯ΋͖ͬ͢Γͯ͠ɺҙຯ΋Ұ໨ྎવ
34. 
    ಺ࢹڸखज़ ,FZIPMF
    4VSHFSZ http://www.flickr.com/photos/larsjuh
35. ಺ࢹڸखज़
    ,FZIPMF
    4VSHFSZ (SPPWZεΫϦϓτΛ઀ଓͰ͖Δখ͞ͳόοΫυΞΛ γεςϜʹઃ͚͓ͯ͘ ΞϓϦέʔγϣϯશମΛఀࢭͨ͠ΓϦίϯύΠϧ͢ Δ͜ͱͳ͘ɺ(SPPWZεΫϦϓτ͔Β௚઀తʹෆ۩߹ ͷ෼ੳ΍ৼΔ෣͍ͷมߋͳͲΛ࣮ࢪͰ͖Δ ӡ༻தʹ͓͚Δ਍அ΍อकɺόά΍ηΩϡϦςΟ্ͷۓ ٸରԠͳͲͰศརʂ ྫʣ+FOLJOTͷ$-* ηΩϡϦςΟͷ֬อʹ͸े෼஫ҙ͢Δ͜ͱʂ
36. 
    ແ੍ݶͷղ์
    6OMJNJUFE
    0QFOOFTT http://www.flickr.com/photos/eiriknewth
37. ແ੍ݶͷ։์
    6OMJNJUFE
    0QFOOFTT ࠷େݶͷੜ࢈ੑ΍ॊೈੑΛಘΔͨΊɺΞϓϦέʔ γϣϯશମΛ(SPPWZ΍(SBJMTͰߏங͢Δ কདྷͷཁٻʹඋ͑ͯ͋Β͔͡Ίઃܭ͢ΔͳΜͯແཧ શͯͷίʔυ͕มԽΛड͚ೖΕΒΕΔΑ͏ʹ 1FSM΍1)1ɾ1ZUIPOɾ3VCZʹଓ͜͏ े෼ͳ஌ࣝͱܦݧΛ࣋ͭখن໛ͳνʔϜͰൺֱతγ ϯϓϧͳγεςϜΛ։ൃ͢Δ৔߹͸ޮՌ͕ߴ͍ ෳࡶ౓͕ߴ͍γεςϜɾେن໛ͳνʔϜɾಈతݴޠ ʹෆ׳Εͳ৔߹ͳͲʹ͸ɺٯޮՌʹͳΔ৔߹΋
38. 
    ΰʔετϥΠλʔ (IPTU
    8SJUFS New!! http://www.flickr.com/photos/striatic
39. ΰʔετϥΠλʔ
    (IPTU
    8SJUFS ΞϊςʔγϣϯΛϚʔΧʔͱͨ͠ɺ"45ม׵ʹΑΔ ίʔυੜ੒Λར༻͢Δ ίʔυΛॻ͍ͯͳ͍ͷʹɺόΠτίʔυϨϕϧͰػೳ͕ ੝Γࠐ·ΕΔ "45ม׵ͷྫ !*NNVUBCMF
    !-PH
    !%FMFHBUF
    !-B[Z
    !4JOHMFUPO
    !#JOEBCMF
    !"VUP$MPOF
    !5JNFE*OUFSSVQU
    
40. ˏ-PH @groovy.util.logging.Log class Foo { def method() { log.info('info message') log.fine('fine message') log.severe('severe message') } } new Foo().method() $ groovy astLog.groovy Nov 9, 2011 1:09:10 PM java_util_logging_Logger$info call INFO: info message Nov 9, 2011 1:09:10 PM java_util_logging_Logger$severe call SEVERE: severe message
41. ˏ*NNVUBCMF @Immutable class Foo { int x Date date = new Date(1000) } def a = new Foo(x:1) assert a.x == 1 assert a.date.getTime() == 1000 a.date.setTime(2000) assert a.date.getTime() == 1000 a.x = 3 ๷ޚతίϐʔ͞ΕΔͨ ΊɺΦϒδΣΫτͷঢ়ଶ Λมߋͯ͠΋ɺݩͷΦϒ δΣΫτʹӨڹ͸ͳ͍ ϑΟʔϧυʹ࠶୅ೖ͠Α͏ͱ͢Δͱ 3FBE0OMZ1SPQFSUZ&YDFQUJPO͕ൃੜ͢Δ
42. ˏ4JOHMFUPO @Singleton class Foo { def hello() { "hello" } } assert Foo.instance.hello() == "hello" // => Caught: java.lang.RuntimeException: // Can't instantiate singleton Foo. Use Foo.instance new Foo() HFU*OTUBODF Λ௨ͯ͠औಘ͢Δ ࣗ෼ͰOFX͠Α͏ͱ͢Δͱ 3VOUJNF&YDFQUJPO͕ൃੜ͢Δ
43. ˏ%FMFHBUF class StringList { @Delegate List<String> list = new ArrayList<String>() } def stringList = new StringList() stringList.add("A") stringList.add("B") assert stringList == ["A", "B"] stringList.each { print it } // => AB BEEϝιου͸ఆ͍ٛͯ͠ͳ͍͕ɺ ϑΟʔϧυͷMJTUʹҕৡ͞Ε͍ͯΔ
44. ΦϦδφϧͷ"45ม׵΋ͭ͘ΕΔ @HelloWorld x $ groovy sample.groovy Hello, World! ΞϊςʔγϣϯͷΞϯΧʔϙΠϯ τͱͯ͠ͷμϛʔม਺એݴ
45. ΦϦδφϧͷ"45ม׵΋ͭ͘ΕΔ @GroovyASTTransformationClass("org.jggug.kobo.gastah.HelloWorldASTTransformation") @Retention(RetentionPolicy.RUNTIME) public @interface HelloWorld { String value() } @GroovyASTTransformation(phase = CompilePhase.CANONICALIZATION) class HelloWorldASTTransformation extends ClassCodeVisitorSupport implements ASTTransformation { SourceUnit sourceUnit // forced to override by super class public void visit(ASTNode[] nodes, SourceUnit source) { AnnotatedNode target = (AnnotatedNode) nodes[1] AnnotationNode includeAnnotation = (AnnotationNode) nodes[0] def additionNode = new AstBuilder().buildFromCode({ println "Hello, World!" })[0] def statements = additionNode.statements // ϒϩοΫ಺ͷ׬શϦϓϨʔε source.getAST().getStatementBlock().getStatements().clear() source.getAST().getStatementBlock().getStatements().addAll(0, statements) } } https://github.com/nobeans/jggug-20110617 !)FMMP8PSME ͙Β͍ͳΒ ͜ͷ͙Β͍ͷ ίʔυྔͰ0,
46. 
    খਓ͞ΜεΫϦϓτ )PVTF&MG
47. খਓ͞ΜεΫϦϓτ )PVTF&MG ϓϩδΣΫτͰར༻͢ΔछʑͷϢʔςΟϦςΟπʔ ϧΛ(SPPWZεΫϦϓτͱͯ͠ॻ͘ ϏϧυࣗಈԽɺ$*ɺσϓϩΠɺΠϯετʔϥɺαʔϏε ؂ࢹɺ௨஌ɺ౷ܭɺυΩϡϝϯτੜ੒ɺػೳςετɺ )5.-εΫϨΠϐϯάɺςετ༻σʔλੜ੒ɺσʔλҠ ߦπʔϧͳͲͳͲ (SPPWZͷศར͕͞खͬऔΓૣ࣮͘ײͰ͖ɺϓϩδΣ Ϋτ಺ͷ(SPPWZ΁ͷཧղ΍਌͠Έ΋ਂ·Δ ͸͡Ίͯ(SPPWZಋೖΛࢼͯ͠ΈΔͱ͖ʹ͓͢͢Ί
48. ˻͕࣌ؒ͋Ε͹˼ ຊ೥੯͘͠΋ϨΪϡϥʔ ݍ֎ʹ࿙Εͨύλʔϯ ΋؆୯ʹ঺հ͠·͢
49. ϓϩτλΠϓ
    1SPUPUZQF Old! http://www.flickr.com/photos/solarbotics
50. ϓϩτλΠϓ
    1SPUPUZQF ৽ٕज़΍ΞϧΰϦζϜɺϢʔβΠϯλϑΣʔεͳͲ ͷ࣮ݱՄೳੑݕূͷͨΊͷϓϩτλΠϓ։ൃʹ (SPPWZ ΍(SBJMTɺ(SJ⒎PO Λ༻͍Δ ։ൃͨ͠ϓϩτλΠϓ͸ɺཁ݅ʹԠͯ͡ඞཁͳΒҰ ෦·ͨ͸શ෦Λ+BWBͰॻ͖׵͑ɺͦͷ··੡඼ɾೲ ೖγεςϜʹൃలͤͨ͞Γ
51. εϚʔτઃఆ 4NBSU
    $POGJHVSBUJPO Old!
52. εϚʔτઃఆ
    4NBSU
    $POGJHVSBUJPO γεςϜͷઃఆϑΝΠϧͱͯ͠ɺ9.-΍ϓϩύςΟ ϑΝΠϧͰ͸ͳ͘(SPPWZεΫϦϓτΛ༻͍Δ (SPPWZͷ؆ܿͰಡΈ΍͍͢ه๏Λ׆͔ͨ͠ॊೈͳઃ ఆදݱ͕Ͱ͖Δ ܁Γฦ͠΍৚݅෼ذͳͲ΋ࣗવʹهड़Ͱ͖Δ (SPPWZͷશػೳ͕࢖͑ΔͷͰɺ؀ڥʹಈతʹదԠ͢ ΔʮεϚʔτͳ ݡ͍ ʯઃఆΛهड़ͨ͠Γɺઃఆه ड़༻ͷઐ༻%4-Λಋೖ͢Δ͜ͱ΋Ͱ͖Δ
53. (SPPWZ͕ɺԼࠀ্Λૂ͏ /FYU
    #JH
    +7.
    -BOHͰ͸ͳ ͘ɺ͋͘·Ͱ+BWBʹدΓఴ͏ ݈ؾͳଘࡏͰ͋Δ͜ͱ͕͏· ͓͘఻͑Ͱ͖ͨͰ͠ΐ͏͔ʁ
54. ࢀߟࢿྉ +BWB0OFͷൃදࢿྉ IUUQTPSBDMFVTXJOHBUFXFCDPNQVCMJTIFE PSBDMFVTTFTTJPOT4@QEG ϓϩάϥϛϯά(SPPWZʢٕज़ධ࿦ࣾʣ IUUQHJIZPKQCPPL