Javaな会社のScalaへの取り組み

Presentation slides at http://summit.scala-kansai.org/

Transcript

1. +BWBͳձࣾͷ
   4DBMB΁ͷऔΓ૊Έ
   גࣜձࣾψʔϥϘɹ០ढ़و
   
2. C •    –  ( •  )
3. Java $ Scala $ $
4. •  Scala $ •  $ •  Scala
6. •  2004$Backlog$(Java/Seasar/WebWork)$ •  2008$Cacoo$(Java/Seasar/Cubby)$
7. We— Java
   
8. 8IZ
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   •  ੩తܕ෇͚
   – ։ൃޮ཰
   – อकੑ
   •  ߴ଎ͳ࣮ߦ଎౓࣮ߦޮ཰
   – εϨουϞσϧ
   – αʔόʔͷ୆਺͕গͳͯ͘ࡁΉ
   •  ౰࣌͸ ޮ཰ͷྑ͍ϑϨʔϜϫʔΫ
   – 4FBTBS8FC8PSL
   – 4%BP4+%#$
   
9. +BWB
   UP
   4DBMB
   •  4FBTBSͷ։ൃ͕ࢭ·Δ
   •  ྡͷࣳੜͰ͸3P3͕੝Γ্͕Γ
   •  +BWB
   ͳ͔ͳ͔ग़ͳ͍
   •  )PU
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   – ίʔυमਖ਼ͷͨͼʹ5PNDBU࠶ىಈ
   •  +BWBͷ୅ସΛ୳ͨ͠຤ʹ
   
10. 8IZ
    4DBMB
    •  ݎ࿚ੑ
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    –  $BTFΫϥε
    –  ύλʔϯϚον
    •  +7.ݴޠ
    –  +BWBࢿ࢈ͷ༗ޮ׆༻
    –  +7.Ͱͷαʔόʔӡ༻ܦݧ
    
11. case$class $case$class$User(id:$Long,$name:$String,$isAdmin:$Boolean)$ $$val$newUser$=$User(1L,$“agata”,$false)$ $$val$updatedUser$=$newUser.copy(name$=$“agaMno”)$ •  ߦͰ+BWBͷߦ෼͙Β͍
    •  σϑΥϧτͰಡΈऔΓઐ༻ϓϩύςΟ෇༩
    •  FRVBMTIBTI$PEFUP4USJOHDPQZϝιουੜ੒
    •  DPQZͰݩͷΦϒδΣΫτΛഁյͤͣʹίϐʔ
    •  ύλʔϯϚονʹద༻Մೳ
    
12. case$class$AddAccountCommand(name:$String,$password:$String,$email:$String…)$ case$class$UpdateAccountCommand(id:$Long,$name:$String,$email:$String$…)$ $ object$AccountService${$ $def$add(command:$AddAccountCommand):$Account$=$…$ $def$update(command:$UpdateAccountCommand):$Account$=$…$ }$ $ ublic$class$Account${$ $$private$Long$id;$ $$private$String$name;$ $$private$String$password;$ $$private$String$email;$ $$…$ }$ public$class$AccountService${$ $public$void$add(Account$account)${$…$}$ $public$void$update(Account$account)${$…$}$ }$ $ Scala Java
13. Play2 •  $ – DB MigraVon $ –  Hot$Reloading$ •  $ – Routes$ – View/Template$ – build.scala$
14. Play$2 develop feature,X 5.sql 5.sql 6.sql 4.sql feature,Y ! #$```$!Ups$ alter$table$post$add$show_link_meta$boolean$not$null$default$true;$ $ #$```$!Downs$ alter$table$post$drop$show_link_meta;$
15. •  2004$Backlog$(Java/Seasar/WebWork)$ •  2008$Cacoo$(Java/Seasar/Cubby)$ •  2011$Typetalk$(Scala/Play$2)$ •  2013$Backlog$API$v2$(Scala/Play$2)$ •  013$Nulab$Account$(Java/Spring)$ •  2014$ (Scala/Play$2)$ •  014$Nulab$Services$Status(Go)$ •  2015$Backlog$Redmine$Importer(Scala/Akka)
16. Typetalk ( ) Web/API$ (Scala/Play$2) Streaming$ (Node.js) DB iOS Android Redis Redis Pub/Sub Socket.IO
17. API Web (JS) API$ $ OAuth$2$ object$TopicController$exnteds$Controller${$ $$self:$Auth$ $$//$API$Methods$ }$ object$TopicWebController$extends$TopicController$with$WebAuth$ object$TopicAPIController$extends$TopicController$with$APIAuth$
18. Backlog ( ) Web $ API$ (XML`RPC)$ $(Java/Seasar) API$v2(REST/JSON)$ (Scala/Play$2) API DB iOS Android DB $
19. Backlog$APIv2 DB Client Controller$ (Play$2)$ ApplicaVo nService Repository$ PresentaVon$ ApplicaVon$ Domain$ Infrastructure$ Service Value$ Object EnVty SpecificaVon Dao$ Record$
20. 4DBMBΛࣾ಺Ͱ
    ීٴͤ͞ΔͨΊͷ
    औΓ૊Έ
    
21. ࣾ಺ΞϓϦΛ4DBMBͰ࡞੒
    •  $ •  $ •  $ •  Backlog $ •  YouTube/SoundCloud/Vimeo Mix $ •  Scala
22. ࣾ಺ษڧձ
    
23. ͓ۚͰղܾ
    
24. ͓͢͢Ίಋೖϓϥϯ
    •  جຊߏจ͸֤ࣗݸਓֶशͰԡ͓͑ͯ͘͞
    •  ·ͣ͸ࣾ಺ΞϓϦͳͲɺখ͞ΊͷΞϓϦΛ ࠾༻ͯ͠ΈΔɻ
    •  ࣾ಺ษڧձॏཁ
    •  ࢥ͍੾࣮ͬͯҊ݅ʹಋೖ
    – ࠷ॳ͸ϕλʔ+BWB͔ΒͰ0,
    – ׳Ε͖ͯͨΒͩΜͩΜ4DBMBؔ਺ܕΒ͘͠
    
25. •  Java Scala $ –  cala Scala $ •  Scala $ –  $