The report of JavaOne2011 about groovy

4UBOECZ+BWB http://www.ﬂickr.com/photos/compujeramey (SPPWZͷ࢖͍Ͳ͜Ζ ͭͷಋೖύλʔϯ 2011 ೥ ౓ ൛ 5IFTFWFO(SPPWZVTBHFQBUUFSOT

8IPBN* 㾎ࢯ໊ɿத໺༃࣏ʢBLBOPCFBOTʣ 㾎ॴଐɿ/55ιϑτ΢ΣΞגࣜձࣾ 㾎ϒϩάɿ౾ແ೔ه IUUQEIBUFOBOFKQOPCFBOT 㾎ϓϩμΫτɿ IUUQTHJUIVCDPNOPCFBOT

$ 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

(SPPWZʙ ͰHSPPWZTFSWFS͕ى ಈ͠ͳ͍ࣄ৅͕ʂ http://jira.codehaus.org/browse/GROOVY-5101

(SPPWZͰ࢖͏ ͔ɺ࢑ఆରॲΛೖΕͨ࠷ ৽ιʔε͔ΒϏϧυ͠ͳ ͓͍ͯͩ͘͠͞PS[ https://github.com/downloads/kobo/groovyserv/ groovyserv-0.10-SNAPSHOT-21eda1f.jar

http://gihyo.jp/book/2011/978-4-7741-4727-7 ٕज़ධ࿦ࣾΑΓ ઈࢍൃചத

&YUFOEJOH+BWBT 3FBDIXJUI(SPPWZ 4FWFO4DFOBSJPT

(SPPWZʙࣣͭͷಋೖύλʔϯ ສೳ઀ணࡎ 4VQFS(MVF ΍ΘΒ͔ͳ৺ଁ -JRVJE)FBSU εϚʔτઃఆ 4NBSU$POpHVSBUJPO ಺ࢹڸखज़ ,FZIPMF4VSHFSZ ແ੍ݶͷղ์
6OMJNJUFE0QFOOFTT ϓϩτλΠϓ 1SPUPUZQF খਓ͞ΜεΫϦϓτ )PVTF&MG ೥౓൛

(SPPWZʙࣣͭͷಋೖύλʔϯ ສೳ઀ணࡎ 4VQFS(MVF ΍ΘΒ͔ͳ৺ଁ -JRVJE)FBSU ϦοϓεςΟοΫ -JQTUJDL ಺ࢹڸखज़ ,FZIPMF4VSHFSZ
ແ੍ݶͷղ์ 6OMJNJUFE0QFOOFTT ΰʔετϥΠλʔ (IPTU8SJUFS খਓ͞ΜεΫϦϓτ )PVTF&MG ೥౓൛

ͭͣͭ ঺հ͍͖ͯ͠·͢

ສೳ઀ணࡎ 4VQFS(MVF http://www.ﬂickr.com/photos/yto/

ສೳ઀ணࡎ 4VQFS(MVF +BWBͰ࡞ΒΕͨطଘͷίϯϙʔωϯτ΍ϑϨʔϜ ϫʔΫΛ(SPPWZΛάϧʔ ކ ͱͯ͠౷߹͢Δ ݎ࿚ੑ΍ύϑΥʔϚϯε͕ඞཁͱ͞ΕΔج൫΍ओཁ ίϯϙʔωϯτͰ+BWBͷڧΈΛ׆͔͢ ॊೈੑ΍ढ़හੑ͕ඞཁͱ͞ΕΔϏϡʔ΍ίϯτϩʔ ϥͷϨΠϠͰ(SPPWZͷڧΈΛ׆͔͢

ͨͱ͑͹ 9.-1BSTFSɺ+BWBͷωοτϫʔΫ"1*ɺ4XJOHΛ૊ Έ߹Θͤͯɺ(SPPWZؔ܎ͷ೔ຊޠϒϩάͷҰཡΛද ࣔͯ͠ΈΔ

(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() }

࣮ߦ݁Ռ

΍ΘΒ͔ͳ৺ଁ -JRVJE)FBSU http://www.ﬂickr.com/photos/luilainez

΍ΘΒ͔ͳ৺ଁ෦ -JRVJE)FBSU +BWBͰڧݻͳΞϓϦέʔγϣϯߏ଄Λߏங͠ɺγε ςϜͷத֩ʹҐஔ͢ΔɺมԽ͠΍͍͢Ϗδωεϩ δοΫͷ෦෼͚ͩΛ(SPPWZ PS(SPPWZʹΑΔ%4- ͰॊೈʹεΫϦϓςΟϯά͢Δ සൟʹมΘΔෳࡶͳϏδωεϧʔϧΛ࣋ͭΞϓϦ έʔγϣϯྖҬʹಛʹద͍ͯ͠Δ

ͨͱ͑͹ Ϙʔφεͷ഑෼ϩδοΫ͚ͩॊೈʹ͍ͨ͠

ϦοϓεςΟοΫ -JQTUJDL New!! http://www.ﬂickr.com/photos/taniasaiz

ϦοϓεςΟοΫ -JQTUJDL (SPPWZͷ͋ΒΏΔػೳɾϓϩμΫτΛ࢖ͬͯίʔυ ΛಡΈ΍͘͢͢Δ (%, (SPPWZ#FBOT (1BUI -JTUT .BQT $BMMBCMF
9.- 42- $PNNBOEDIBJOT (1BST 4DSJQUPN ͳͲ ͳͲ ಛʹʮ%4-ʯ (SPPWZ͔Βɺ%4-͕ΑΓॻ͖΍͘͢ͳͬͨ ʢಛఆ৚݅ԼͰʣϝιουݺग़ͷׅހ͕লུͰ͖Δ

ͨͱ͑͹ invite “You” to javaone

ͨͱ͑͹ invite(“You”).to(javaone)

ίʔυҰࣜ def invite(subject) { [ to : { target ->
target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone)

·ͣ͸JOWJUFϝιουͷݺग़ def invite(subject) { [ to : { target ->
target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone)

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

ͦͷΫϩʔδϟΛݺग़͢ʂ def invite(subject) { [ to : { target ->
target.add(subject) } ] } def javaone = [] assert javaone == ["Nakano”, "<Your Name>"] invite(“You”).to(javaone) ͜ͷΫϩʔδϟͷݺग़ʹͳΔ

݁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”)

%4-ͷͨΊͷ࢓ࠐΈΛཪʹӅͯ͠͠·͑͹ invite “You” to javaone ίʔυ͸ͱͯ΋͖ͬ͢Γͯ͠ɺҙຯ΋Ұ໨ྎવ

಺ࢹڸखज़ ,FZIPMF4VSHFSZ http://www.ﬂickr.com/photos/larsjuh

಺ࢹڸखज़ ,FZIPMF4VSHFSZ (SPPWZεΫϦϓτΛ઀ଓͰ͖Δখ͞ͳόοΫυΞΛ γεςϜʹઃ͚͓ͯ͘ ΞϓϦέʔγϣϯશମΛఀࢭͨ͠ΓϦίϯύΠϧ͢ Δ͜ͱͳ͘ɺ(SPPWZεΫϦϓτ͔Β௚઀తʹෆ۩߹ ͷ෼ੳ΍ৼΔ෣͍ͷมߋͳͲΛ࣮ࢪͰ͖Δ ӡ༻தʹ͓͚Δ਍அ΍อकɺόά΍ηΩϡϦςΟ্ͷۓ ٸରԠͳͲͰศརʂ ྫʣ+FOLJOTͷ$-*
ηΩϡϦςΟͷ֬อʹ͸े෼஫ҙ͢Δ͜ͱʂ

ແ੍ݶͷղ์ 6OMJNJUFE0QFOOFTT http://www.ﬂickr.com/photos/eiriknewth

ແ੍ݶͷ։์ 6OMJNJUFE0QFOOFTT ࠷େݶͷੜ࢈ੑ΍ॊೈੑΛಘΔͨΊɺΞϓϦέʔ γϣϯશମΛ(SPPWZ΍(SBJMTͰߏங͢Δ কདྷͷཁٻʹඋ͑ͯ͋Β͔͡Ίઃܭ͢ΔͳΜͯແཧ શͯͷίʔυ͕มԽΛड͚ೖΕΒΕΔΑ͏ʹ 1FSM΍1)1ɾ1ZUIPOɾ3VCZʹଓ͜͏ े෼ͳ஌ࣝͱܦݧΛ࣋ͭখن໛ͳνʔϜͰൺֱతγ ϯϓϧͳγεςϜΛ։ൃ͢Δ৔߹͸ޮՌ͕ߴ͍ ෳࡶ౓͕ߴ͍γεςϜɾେن໛ͳνʔϜɾಈతݴޠ
ʹෆ׳Εͳ৔߹ͳͲʹ͸ɺٯޮՌʹͳΔ৔߹΋

ΰʔετϥΠλʔ (IPTU8SJUFS New!! http://www.ﬂickr.com/photos/striatic

ΰʔετϥΠλʔ (IPTU8SJUFS ΞϊςʔγϣϯΛϚʔΧʔͱͨ͠ɺ"45ม׵ʹΑΔ ίʔυੜ੒Λར༻͢Δ ίʔυΛॻ͍ͯͳ͍ͷʹɺόΠτίʔυϨϕϧͰػೳ͕ ੝Γࠐ·ΕΔ "45ม׵ͷྫ !*NNVUBCMF !-PH !%FMFHBUF
!-B[Z !4JOHMFUPO !#JOEBCMF !"VUP$MPOF !5JNFE*OUFSSVQU

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

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

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

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

ΦϦδφϧͷ"45ม׵΋ͭ͘ΕΔ @HelloWorld x $ groovy sample.groovy Hello, World! ΞϊςʔγϣϯͷΞϯΧʔϙΠϯ τͱͯ͠ͷμϛʔม਺એݴ

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,

খਓ͞ΜεΫϦϓτ )PVTF&MG

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

˻͕࣌ؒ͋Ε͹˼ ຊ೥੯͘͠΋ϨΪϡϥʔ ݍ֎ʹ࿙Εͨύλʔϯ ΋؆୯ʹ঺հ͠·͢

ϓϩτλΠϓ 1SPUPUZQF Old! http://www.ﬂickr.com/photos/solarbotics

ϓϩτλΠϓ 1SPUPUZQF ৽ٕज़΍ΞϧΰϦζϜɺϢʔβΠϯλϑΣʔεͳͲ ͷ࣮ݱՄೳੑݕূͷͨΊͷϓϩτλΠϓ։ൃʹ (SPPWZ ΍(SBJMTɺ(SJ⒎PO Λ༻͍Δ ։ൃͨ͠ϓϩτλΠϓ͸ɺཁ݅ʹԠͯ͡ඞཁͳΒҰ ෦·ͨ͸શ෦Λ+BWBͰॻ͖׵͑ɺͦͷ··੡඼ɾೲ ೖγεςϜʹൃలͤͨ͞Γ

εϚʔτઃఆ 4NBSU$POGJHVSBUJPO Old!

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

(SPPWZ͕ɺԼࠀ্Λૂ͏ /FYU#JH+7.-BOHͰ͸ͳ ͘ɺ͋͘·Ͱ+BWBʹدΓఴ͏ ݈ؾͳଘࡏͰ͋Δ͜ͱ͕͏· ͓͘఻͑Ͱ͖ͨͰ͠ΐ͏͔ʁ

ࢀߟࢿྉ +BWB0OFͷൃදࢿྉ IUUQTPSBDMFVTXJOHBUFXFCDPNQVCMJTIFE PSBDMFVTTFTTJPOT4@QEG ϓϩάϥϛϯά(SPPWZʢٕज़ධ࿦ࣾʣ IUUQHJIZPKQCPPL

The report of JavaOne2011 about groovy

The report of JavaOne2011 about groovy

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