実践GraphQL on Scala/Real world GraphQL on Scala

Scala関西サミット2018 「実践GraphQL on Scala」の発表資料

- https://github.com/petitviolet/graphql_on_scala

Transcript

1. ࣮ફ(SBQI2-PO4DBMB
   4DBMBؔ੢4VNNJU
   !QFUJUWJPMFU
   
   
   

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2. ͸͡Ίʹ
   w αϯϓϧίʔυ
   w IUUQTHJUIVCDPNQFUJUWJPMFUHSBQIRM@PO@TDBMB
   w ϦϯΫू
   w IUUQTHSBQIRMHJUIVCJPMFBSO
   w IUUQTXXXIPXUPHSBQIRMDPN
   w IUUQTTBOHSJBHSBQIRMPSHMFBSO
   2
   

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3. Ͱɺ୭ʁ
   w খࢵ߂و
   w !QFUJUWJPMFU
   w 'SJOHFגࣜձࣾ
   w ؔ੢ग़਎
   w ڈ೥ͷ4DBMBؔ੢Ͱ͸ϝλϓϩάϥϛϯάʹ͍ͭͯ
   3
   

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4. (SBQI2-
   w ੝Γ্͕ͬͯΔ͚ͲΑ͘஌Βͳ͍
   w ஌ͬͯΔ͚Ͳ4DBMBͰग़དྷΔͷʁ
   w ΍ͬͯΔ͚Ͳ΍Γํʹࣗ৴ͳ͍
   4
   

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5. ࠓ೔ͷΰʔϧ
   ʮ࣍ͷϓϩδΣΫτͰ͸
   ɹ(SBQI2-Λ 4DBMBͰ
   ΍Γ͍ͨʂʯ
   5
   

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6. ࠓ೔࿩͢͜ͱ࿩͞ͳ͍͜ͱ
   ࿩͢͜ͱ
   w (SBQI2-ʹ͍ͭͯ͟ʔͬͱ
   w 4DBMBͰͷ࣮ફʹ͍ͭͯ
   w ͳͥ(SBQI2-ͳͷ͔ɺͲ͏΍͍ͬͯΔͷ͔
   w جຊతͳ࣮૷ͷ࢓ํ͔Βઃܭʹ͍ͭͯ
   ࿩͞ͳ͍͜ͱ
   w 4DBMBҎ֎Ͱͷ(SBQI2-ʹ͍ͭͯ
   w 4VCTDSJQUJPO!
   w ͦͷଞࡉ͔͍࢓༷
   6
   

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7. ࠓ೔࿩͢͜ͱ
   w (SBQI2-ͱ͸
   w Ͳ͏cͳͥ
   (SBQI2-Λ࣮ફ͍ͯ͠Δͷ͔
   w 4DBMBͰͷ(SBQI2-
   w 4DBMBͰͷ(SBQI2-࣮ફ
   7
   

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8. ɹ(SBQI2-ʁ
   8
   

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9. 9
   (SBQI2-JTBOPQFOTPVSDFEBUBRVFSZBOE
   NBOJQVMBUJPOMBOHVBHF BOEBSVOUJNFGPSGVMpMMJOH
   RVFSJFTXJUIFYJTUJOHEBUB
   https://en.wikipedia.org/wiki/GraphQL
   

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10. (SBQI2-ͱ͸
    w 'BDFCPPL͕೥ࠒʹൃදͨ͠΋ͷ
    w ಺෦తʹ͸೥͘Β͍͔Β։ൃ
    w 2VFSZ-BOHVBHF
    w "1*ͷͨΊͷΫΤϦݴޠ
    w (SBQI2-ͱ͍͏࢓༷͕͋Δ
    w ެࣜIUUQTHSBQIRMPSH
    10
    

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11. (SBQI2-ͱ͸
    w ࢓༷͸'BDFCPPL͕ࡦఆ͍ͯ͠Δ
    w IUUQTGBDFCPPLHJUIVCJPHSBQIRM
    w IUUQTHJUIVCDPNGBDFCPPLHSBQIRM
    w ࢓༷ͱ͖ͯͬͪ͠ΓͱܾΊΒΕ͍ͯΔ
    w (JUIVCͰΦʔϓϯʹٞ࿦͞Ε͍ͯΔ
    w ֓೦Ͱ͸ͳ͍
    11
    

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12. (SBQI2-ͱ͸
    w (JUIVC͕ʹ"1*Wͱͯ͠(SBQI2-Λ࠾༻
    w ͔ͦ͜Β஌໊౓্͕͕ͬͨ
    
    12
    

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13. 3&45GVMͱൺ΂ͯΈΔ
    w (SBQI2-੝Γ্͕ͬͯΔ
    13
    

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14. (SBQI2-ͱ͸
    14
    https://gql.foundation/
    

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15. (SBQI2-ΩςΔ
    15
    

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16. (SBQI2-ͱ͸
    w ܕγεςϜΛఏڙ͍ͯ͠Δ
    w "1*ΠϯλϑΣʔεͰ࢖༻͢ΔܕΛఆٛͰ͖Δ
    w ඞཁͳσʔλΛΫϥΠΞϯτ͔Β໰͍߹ΘͤΔ
    w ໰͍߹Θͤ ΫΤϦ
    ༻ͷݴޠ࢓༷
    w ඞཁͳσʔλ ϑΟʔϧυ
    ͚ͩΛࢦఆͰ͖Δ
    w (SBQIJ2-͕ඇৗʹศར
    w ϒϥ΢βͰಈ͘*%&తͳ΋ͷ
    16
    

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17. (SBQI2-ͷ༷ࢠ (SBQIJ2-
    
    17
    

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18. (SBQI2-ͱ͸
    w ؔ࿈͢ΔΦϒδΣΫτ΋·ͱΊͯऔಘՄೳ
    w ؔ࿈Λܕͱͯ͠දݱ͓͚ͯ͠͹ྑ͍
    w υΩϡϝϯτ΋εΩʔϚ͔Βࣗಈੜ੒
    18
    

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19. 3&45GVM (SBQI2-ͱͷൺֱ
    19
    QSPT DPOT
    3&45GVM
    w Α͘஌ΒΕ͍ͯΔ
    w Ϧιʔεͱ"1*ͷؔ࿈෇͚
    w )551ͱ૬ੑ͕ྑ͍
    w Ϧιʔεͷઃܭ͕େม
    w ϦΫΤετճ਺૿͕͑ͪ
    (SBQI2-
    w *'Λܕఆٛग़དྷΔ
    w ϦΫΤετΛ࠷దԽग़དྷΔ
    w ΫΤϦͷ੹຿ΛΫϥΠΞϯτ
    ʹدͤΔ͜ͱ͕ग़དྷΔ
    w ஌ݟࣄྫ͕ཷ·͍ͬͯͳ͍
    w )551ͱ૬ੑ͕ྑ͘ͳ͍
    w ϑΝΠϧΛѻ͍ਏ͍ FHը૾
    

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20. (SBQI2-ͷ࢖͍Ͳ͜Ζ͸Ͳ͔͜ ओ؍
    w ࢖͍΍͍͢ͷ͸಺෦޲͚"1*
    w ߟ͑Δ͜ͱ͕গͳ͘ɺγϯϓϧʹอͪ΍͍͢
    w ֎෦޲͚͸·ͩ3&45ͷํ͕Ұൠత͔΋
    w #''ʹ΋ྑͦ͞͏
    w ෳ਺ͷόοΫΤϯυΛଋͶͨ"1*Λ࡞Γ΍͍͢
    w ඞཁͳσʔλΛඞཁͳ࣌ʹऔಘ
    w ෆඞཁͳͷʹຖճ໰͍߹ΘͤΔɺΛආ͚Δ
    20
    

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21. ஫ҙ఺
    w (SBQI2-͸ศར͕ͩɺۜͷ஄ؙͰ͸ͳ͍
    w Α͘ग़དྷͨ3&45ͳΒɺ(SBQI2-Ͱ࣮ݱ͍ͯ͠Δ
    ͜ͱ͸શͯग़དྷΔ
    w ʮ(SBQI2-ʹ͔͠ग़དྷͳ͍͜ͱʯ͸ແ͍
    w αϘͬͯ΋͋Δఔ౓࣮ݱͰ͖Δͷ͕(SBQI2-
    w "1*ͷܕදݱ υΩϡϝϯτࣗಈੜ੒ͳͲ
    w ౰વࣦΘΕΔ΋ͷ΋͋Δ
    21
    

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22. (SBQI2-ͷUZQFTZTUFN
    ओͳొ৔ਓ෺͸͜ͷลΓ
    w OVMMBCMFOPOOVMM -JTU
    w 0CKFDU5ZQF
    w *OUFSGBDF
    w 4DBMBS5ZQF
    w &OVN5ZQF
    w 6OJPO5ZQF
    w "SHVNFOU
    w *OQVU0CKFDU5ZQF
    22
    

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23. (SBQI2-ͷUZQFTZTUFN
    ओͳొ৔ਓ෺͸͜ͷลΓ
    w OVMMBCMFOPOOVMM -JTU
    w 0CKFDU5ZQF
    w *OUFSGBDF
    w 4DBMBS5ZQF
    w &OVN5ZQF
    w 6OJPO5ZQF
    w "SHVNFOU
    w *OQVU0CKFDU5ZQF
    23
    

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24. OVMMBCMFOPOOVMM -JTU
    w OVMMBCMFOPOOVMM
    w AA͕͍ͭͨΒOPOOVMM
    w 0QUJPO<">A͔A"Aͷҧ͍
    w -JTU
    w <9>Ͱ9ͷ-JTUʹͳΔ
    w <4USJOH>͸OVMMBCMFͳ4USJOHͷOVMMBCMFͳ-JTU
    type User {
    name: String! ←!Ͱnon-null
    projects: [Project!]! ←[x]ͰxͷList
    }
    24
    (SBQI2-ͷܕఆٛ
    

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25. OVMMBCMFOPOOVMM -JTU
    type User {
    name: String!
    projects: [Project!]!
    }
    25
    case class User(name: String, projects: Seq[Project])
    type User {
    name: String
    projects: [Project]
    }
    case class User(
    name: Option[String], projects: Option[Seq[Option[Project]]])
    

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26. ࣮ફʁ
    26
    

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27. Ͳ͏࣮ફ͍ͯ͠Δͷ͔
    w ޿ࠂγεςϜͷ؅ཧը໘޲͚"1*
    w ޿ࠂ഑৴ͷઃఆ΍ϨϙʔτΛӾཡͰ͖Δ
    w ಺෦޲͚"1*ͱͯ͠৴པͰ͖ΔΫϥΠΞϯτʹఏڙ
    w ΫϥΠΞϯτ͸&MNͰॻ͔Ε͍ͯΔ
    w ,VCFSOFUFTʹσϓϩΠ͍ͯ͠Δ
    w 2VFSZͱ.VUBUJPOͲͪΒ΋(SBQI2-
    w ϑΝΠϧͷ\Ξοϓ μ΢ϯ^ϩʔυ͸ඇ(SBQI2-
    27
    

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28. ͳͥ(SBQI2-Λ࠾༻ͨ͠ͷ͔
    w ؅ཧը໘࡞Δ͚ͲɺͲ͏΍ͬͯ࡞Δʁ
    w Ϧιʔεઃܭ͸೉͍͠ͷ͸ݟ͑ͯΔ
    w ʮ͜ͷը໘։͘ͷʹ"1*Λճ΋ୟ͘ͷʁʯ
    w ʮEPDTͱҧ͏Ϩεϙϯεฦͬͯ͘ΔͰ͚͢Ͳʁʯ
    w 4XBHHFS+40/4DIFNB࢖͏ʜʁ
    w %%%ͷ3FQPTJUPSZ͕pOE#Z9YYͩΒ͚
    w ը໘͔ΒͷϦΫΤετ͕ଟ༷
    28
    

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29. 3&45GVM (SBQI2-ͱͷൺֱ
    29
    QSPT DPOT
    3&45GVM
    w Α͘஌ΒΕ͍ͯΔ
    w Ϧιʔεͱ"1*ͷؔ࿈෇͚
    w )551ͱ૬ੑ͕ྑ͍
    w Ϧιʔεͷઃܭ͕େม
    w ϦΫΤετճ਺૿͕͑ͪ
    (SBQI2-
    w *'Λܕఆٛग़དྷΔ
    w ϦΫΤετΛ࠷దԽग़དྷΔ
    w ΫΤϦͷ੹຿ΛΫϥΠΞϯτ
    ʹدͤΔ͜ͱ͕ग़དྷΔ
    w ஌ݟࣄྫ͕ཷ·͍ͬͯͳ͍
    w )551ͱ૬ੑ͕ྑ͘ͳ͍
    w ϑΝΠϧΛѻ͍ਏ͍ FHը૾
    

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30. 3&45GVM (SBQI2-ͱͷൺֱ
    30
    QSPT DPOT
    3&45GVM
    w Α͘஌ΒΕ͍ͯΔ
    w Ϧιʔεͱ"1*ͷؔ࿈෇͚
    w )551ͱ૬ੑ͕ྑ͍
    w Ϧιʔεͷઃܭ͕େม
    w ϦΫΤετճ਺૿͕͑ͪ
    (SBQI2-
    w *'Λܕఆٛग़དྷΔ
    w ϦΫΤετΛ࠷దԽग़དྷΔ
    w ΫΤϦͷ੹຿ΛΫϥΠΞϯτ
    ʹدͤΔ͜ͱ͕ग़དྷΔ
    w ஌ݟࣄྫ͕ཷ·͍ͬͯͳ͍
    w )551ͱ૬ੑ͕ྑ͘ͳ͍
    w ϑΝΠϧΛѻ͍ਏ͍ FHը૾
    ਏ͍ͱࢥ͍ͬͯΔͱ͜ΖΛ
    େମղܾͰ͖ͦ͏ͳݟࠐΈ
    

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31. 3&45GVM (SBQI2-ͱͷൺֱ
    31
    QSPT DPOT
    3&45GVM
    w Α͘஌ΒΕ͍ͯΔ
    w Ϧιʔεͱ"1*ͷؔ࿈෇͚
    w )551ͱ૬ੑ͕ྑ͍
    w Ϧιʔεͷઃܭ͕େม
    w ϦΫΤετճ਺૿͕͑ͪ
    (SBQI2-
    w *'Λܕఆٛग़དྷΔ
    w ϦΫΤετΛ࠷దԽग़དྷΔ
    w ΫΤϦͷ੹຿ΛΫϥΠΞϯτ
    ʹدͤΔ͜ͱ͕ग़དྷΔ
    w ஌ݟࣄྫ͕ཷ·͍ͬͯͳ͍
    w )551ͱ૬ੑ͕ྑ͘ͳ͍
    w ϑΝΠϧΛѻ͍ਏ͍ FHը૾
    ੾Γ୓͍͍֮ͯ͘ޛͰ
    Կͱ͔ͳΓͦ͏
    

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32. ͳͥ(SBQI2-Λ࠾༻ͨ͠ͷ͔
    w ͋ͱ͸λΠϛϯά
    w ৽͍͠ϓϩμΫτ։ൃͷػձ͕͋ͬͨ
    w (SBQI2-ʹϚονͨ͠ཁ݅ͩͬͨ
    w νʔϜϝϯόʹ΋(SBQI2-΍Γ͍ͨਓ͕͍ͨ
    w ϑϩϯτΤϯυʹ͍ͨͷ͕޾ӡ
    32
    

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33. (SBQI2-Λ࠾༻ͯ͠Ͳ͏ʁ
    w "1*ઃܭͰ೰Ή͜ͱ͕গͳͯ͘޾ͤ
    w ΫϥΠΞϯτͷ͜ͱΑ͘஌Βͳͯ͘΋Կͱ͔ͳΔ
    w ཪػೳΛఏڙग़དྷ͍ͯΔ
    w (SBQIJ2-͕Ұ࣌తͳ؅ཧը໘ʹ
    w 4DBMBͰඇৗʹ΍Γ΍͍͢
    33
    

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34. 4DBMBͰͷ(SBQI2-
    34
    

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35. 4DBMBͰͷ(SBQI2-
    w TBOHSJBHSBQIRMTBOHSJB
    w (SBQI2-ϥΠϒϥϦ!0MFH*MZFOLP
    w 4DBMBͰ(SBQI2-΍ΔͳΒίϨ
    w ಛఆͷ8FC"QQ'SBNFXPSLʹґଘ͠ͳ͍
    w *'͕+40/ʹͳ͍ͬͯΔͷͰࣗ༝ʹબ΂Δ
    w +T7BMVFతͳ΋ͷΛύʔεͯ͠(SBQI2-ΫΤϦ
    ͱ࣮ͯ͠ߦ͠ɺ+T7BMVFతͳ΋ͷΛฦ͢
    35
    

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36. implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    36
    (SBQI2-ͷܕఆٛ
    4BOHSJBͰͷఆٛ
    

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37. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    37
    

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38. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    38
    0CKFDU5ZQFʹ
    ରԠ෇͚Δܕ
    

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39. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    39
    $POUFYU ޙड़
    
    

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40. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    40
    ϑΟʔϧυఆٛ
    

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41. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    41
    AOBNFAϑΟʔϧυ
    

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42. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    42
    SFTPMWFؔ਺ͷ$POUFYUʹ͸
    w $POUFYU $UY
    
    w 7BMVF $IBSBDUFS
    
    ͕٧·͍ͬͯΔ
    

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43. type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    43
    $POUFYUWBMVFͰ6TFSܕͷ
    ΠϯελϯεʹΞΫηεՄೳ
    

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44. implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    0CKFDU5ZQF
    44
    <">Λ-JTU5ZQF "5ZQF
    Ͱදݱ
    OPOOVMMͳ1SPKFDUͷ
    OPOOVMMͳ-JTU
    

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45. implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    type User {
    id: ID!
    name: String!
    status: UserStatus!
    projects: [Project!]!
    }
    0CKFDU5ZQF
    45
    SFTPMWFؔ਺ͷதͰ%#ΞΫηεͳͲͯ͠
    ؔ࿈ΦϒδΣΫτΛऔಘग़དྷΔ
    

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46. implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    46
    6TFSOBNFΛऔಘ͢Δ2VFSZΛॻ͘ͱɺ
    VTFS5ZQFͷOBNFϑΟʔϧυͷSFTPMWFͷ݁ՌΛಘΔ
    

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47. implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    0CKFDU5ZQF
    47
    %#ΞΫηε͕ඞཁʹͳΔϑΟʔϧυ͕͋ͬͯ΋
    ͦͷϑΟʔϧυΛऔಘ͠ͳ͍ͳΒSFTPMWFؔ਺͕࣮ߦ͞
    Εͣ%#ΞΫηε΋ൃੜ͠ͳ͍
    

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48. 0CKFDU5ZQF
    w ఆ͕ٛΊΜͲ͍͘͞ʁ
    48
    implicit val userType: ObjectType[Ctx, User] =
    ObjectType(name = "User",
    fields = fields[Ctx, User](
    Field("id", IDType,
    resolve = { ctx => ctx.value.id }),
    Field("name", StringType,
    resolve = { ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType,
    resolve = { ctx => ctx.value.status }),
    Field("projects", ListType(projectType),
    resolve = { ctx => ProjectResolver.byUser(ctx.value) })
    )
    )
    

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49. 0CKFDU5ZQF
    w ͦ͜ͰϚΫϩ
    w DBTFDMBTTͳΒ͍͍ײ͡ʹղܾͯ͘͠ΕΔ
    w ґଘ͢Δଞͷಠࣗܕ͸JNQMJDJUͰએݴ͓ͯ͘͜͠ͱ
    w ࠓճͳΒQSPKFDU5ZQFͱ͔
    import sangria.macros.derive
    val userType: ObjectType[Ctx, User] =
    derive.deriveObjectType()
    49
    

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50. &OVN5ZQF
    val userStatusType = EnumType[UserStatus](
    "UserStatus",
    values = List(
    EnumValue[UserStatus]("Active", value = UserStatus.Active),
    EnumValue[UserStatus]("Paused", value = UserStatus.Paused)
    )
    )
    enum UserStatus {
    Active
    Paused
    }
    sealed abstract class UserStatus(val value: Int)
    object UserStatus {
    case object Active extends UserStatus(1)
    case object Paused extends UserStatus(2)
    }
    50
    

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51. &OVN5ZQF΋ϚΫϩͰ
    val userStatusType: EnumType[UserStatus] =
    derive.deriveEnumType[UserStatus]()
    enum UserStatus {
    Active
    Paused
    }
    sealed abstract class UserStatus(val value: Int)
    object UserStatus {
    case object Active extends UserStatus(1)
    case object Paused extends UserStatus(2)
    }
    51
    

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52. w &OVN5ZQF΋ϚΫϩͰಋग़Ͱ͖Δ
    w ATFBMFEAͱAPCKFDUAͷ૊Έ߹Θͤ
    &OVN5ZQF΋ϚΫϩͰ
    val userStatusType: EnumType[UserStatus] =
    derive.deriveEnumType[UserStatus]()
    sealed abstract class UserStatus(val value: Int)
    object UserStatus {
    case object Active extends UserStatus(1)
    case object Paused extends UserStatus(2)
    }
    52
    

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53. w ީิʹͳΔܕ 0CKFDU5ZQF
    Λ-JTUͰ༩͑Δ
    6OJPO5ZQF
    union Plan = Free | Standard | Enterprise
    object Plan {
    case class Free(startDate: ZonedDateTime)
    case class Standard(startDate: ZonedDateTime)
    case class Enterprise(userLimit: Int, startDate: ZonedDateTime)
    }
    implicit val planType: UnionType[Ctx] = {
    val free = derive.deriveObjectType[Ctx, Plan.Free]()
    val standard = derive.deriveObjectType[Ctx, Plan.Standard]()
    val enterprise = derive.deriveObjectType[Ctx, Plan.Enterprise]()
    UnionType("Plan", types = free :: standard :: enterprise :: Nil)
    }
    53
    

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54. w ೖྗ஋ͱͯ͠+40/Λड͚औΔͨΊͷ΍ͭ
    w +40/Ͱड͚औͬͯ4DBMBͷΦϒδΣΫτʹม׵
    *OQVU0CKFDU5ZQF
    mutation {
    UpdateTask(attributes: {
    taskId: "t1",
    taskName: "newName"
    }) { id }
    }
    case class UpdateTaskParam(taskId: String,
    taskName: Option[String],
    taskDescription: Option[String],
    assignedTo: Option[String])
    54
    

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55. w ͍ͭ͜΋ϚΫϩͰࣗಈಋग़ग़དྷΔ
    *OQVU0CKFDU5ZQF
    case class UpdateTaskParam(taskId: String,
    taskName: Option[String],
    taskDescription: Option[String],
    assignedTo: Option[String])
    55
    implicit val paramJson = jsonFormat4(UpdateTaskParam.apply)
    val param = derive.deriveInputObjectType[UpdateTaskParam]()
    mutation {
    UpdateTask(attributes: {
    taskId: "t1",
    taskName: "newName"
    }) { id }
    }
    

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56. w &YFDVUPSʹεΩʔϚɺ࣮ߦ͍ͨ͠ΫΤϦɺ$POUFYU
    ͳͲΛ༩͑Δͱ+40/Λฦͯ͘͠ΕΔ
    (SBQI2-ͷ࣮ߦ
    val result: Future[JsValue] =
    Executor.execute[Ctx, Unit, JsObject](
    schema,
    document,
    context
    )
    56
    w ఆٛͨ͠(SBQI2-εΩʔϚ
    w ϦΫΤετͷ+40/Λύʔεͨ݁͠Ռ
    w ࣮ߦ͢ΔͨΊͷDPOUFYU
    

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57. 4DBMBͰͷ(SBQI2-
    w 4DBMBͱ૬ੑόπάϯ
    w ڧྗͳܕγεςϜͰ(SBQI2-ͷܕΛදݱ
    w ϚΫϩͰϘΠϥʔϓϨʔτ΋࡟ݮ
    w σϑΥϧτOPOOVMM࠷ߴ
    w 0QUJPOΛ͚ͭͳ͍ͱOVMMBCMFʹͳΒͳ͍
    w +40/ͱͷ૬ޓม׵
    w DBTFDMBTT͕͋ΔͷͰࣗಈಋग़Ͱ͖Δ
    w TBOHSJBͷ͓͔͛Ͱे෼ઓ͑Δ
    57
    

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58. (SBQI2-ͷ࣮ફ
    58
    

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59. (SBQI2-Ͱͷ࣮ફฤ
    w (SBQI2-Λ4DBMB4BOHSJBͰͲ͏࣮૷͍ͯ͠Δ͔
    w ͋͘·Ͱ͜͏΍࣮ͬͯફ͍ͯ͠Δɺͱ͍͏࿩
    w ͍Ζ͍Ζ೰ΈϙΠϯτ΋ଟ͍
    w (SBQI2-ͳΒͰ͸ͷ೰Έ΋͋Δ
    w খ͍͞΋ͷ͔Βେ͖͍΋ͷ·Ͱ͍Ζ͍Ζ
    59
    

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60. (SBQI2-Ͱͷ࣮ફฤ
    w ΞʔΩςΫνϟ
    w εΩʔϚͷઃܭ
    w $POUFYUΛͲ͏͢Δ͔
    w ೝূɺೝՄΛͲ͏͢Δ͔
    w τϥϯβΫγϣϯ
    w ΤϥʔϋϯυϦϯά
    w /໰୊
    w FUD
    60
    

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61. ΞʔΩςΫνϟ
    61
    

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62. ΞʔΩςΫνϟ
    w ϓϩάϥϛϯάϨϕϧͰͷઃܭ
    w (SBQI2-ʹͲ͜·Ͱ੹຿Λ೚ͤΔ͔
    w ͲΜͳײ͡Ͱ࡞Δͷ͕͍͍ͷ͔
    62
    

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63. ΞʔΩςΫνϟ
    HTTP
    GraphQL
    Business Logic
    Database Access
    63
    

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64. w (SBQI2-͸)551ϨΠϠͱϏδωεϩδοΫͷؒ
    ΛऔΓ࣋ͭଘࡏͱͯ͠ઃܭ͢Δͷ͕ྑ͍
    w (SBQI2-͸͋͘·Ͱ*'ͱͯ͠ར༻͢Δ
    ΞʔΩςΫνϟ
    HTTP
    GraphQL
    Business Logic
    Database Access
    64
    

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65. w (SBQI2-࡞ऀͷ-FF#ZSPOࢯ΋ݴ͍ͬͯΔ
    w ೝূೝՄɺΩϟογϡ΍%#ΫΤϦͳͲ͸
    (SBQI2-ϨΠϠͰ͸ͳͦ͘ͷԼͰ΍Δ΂͖
    w ަ׵Մೳੑ্͕͕ͬͯকདྷ໾ʹཱͭ
    ΞʔΩςΫνϟ
    65
    https://www.youtube.com/watch?v=zVNrqo9XGOs
    

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66. w (SBQI2-ͷར఺͸2VFSZʹ͋ΒΘΕΔ
    w ΫϥΠΞϯτͷཁٻʹԠ͑Δॊೈͳ2VFSZ
    w .VUBUJPO͸ਖ਼௚ͦ͜·Ͱʜ
    ΞʔΩςΫνϟ
    66
    

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67. w $234
    w $PNNBOE2VFSZ3FTQPOTJCJMJUZ4FHSFHBUJPO
    ΞʔΩςΫνϟ
    67
    https://docs.microsoft.com/ja-jp/azure/architecture/guide/architecture-styles/cqrs
    

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68. ΞʔΩςΫνϟ
    HTTP
    GraphQL
    Business Logic
    Database Access
    68
    

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69. ΞʔΩςΫνϟ
    69
    HTTP
    GraphQL
    UseCase/Application
    Database Access(DAO)
    Query Mutation
    Domain
    3FQPTJUPSZ
    
    Resolver
    

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70. w $234Λ؆ུԽͯ͠࠾༻͍ͯ͠Δ
    w ߋ৽ܥ͸%%%Ͱ͖ͬͪΓϞσϦϯά࣮૷
    w ࢀরܥ͸TFMFDUͨ͠σʔλΛՃ޻͢Δ͚ͩ
    w (SBQI2-ͷ2VFSZ͸ͲΜͳσʔλΛඞཁͱ͞ΕΔ
    ͔ɺݺͼग़͞ΕΔ·ͰΘ͔Βͳ͍
    w %%%3FQPTJUPSZ͸ݫ͍͠
    w ఘΊ΋େࣄ
    w %BUB"DDFTT0CKFDUΛ࢖͏
    ΞʔΩςΫνϟ
    70
    

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71. w ͱ͸͍͑2VFSZܥͷSFTPMWFͰ%"0Λ௚઀ݺͿͱɺ
    %"0ЋͳॲཧΛͨ͘͠ͳͬͨ࣌ʹࠔΔ
    w ΩϟογϡೖΕͨΓϖʔδωʔγϣϯͨ͠Γ
    w 3FTPMWFS૚Λ༻ҙ͓ͯ͘͠ͱྑ͍
    w ಺෦Ͱ͸%"0Ћఔ౓
    w SFTPMWFؔ਺͔Β࢖ΘΕΔ
    ΞʔΩςΫνϟ
    71
    

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72. w 3FTPMWFSͷ࣮૷ྫ
    ΞʔΩςΫνϟ
    72
    Field("users", ListType(userType), resolve = { ctx =>
    UserResolver.all()(ctx.ctx)
    })
    object UserResolver {
    def all()(implicit ctx: GraphQLContext): Future[Seq[User]] = {
    withCache("user#all") {
    UserDao.findAll()
    }
    }
    }
    

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73. εΩʔϚ
    73
    

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74. εΩʔϚ
    w ΫϥΠΞϯτʹͲΜͳεΩʔϚΛఏڙ͢Δ͔
    w 3&45GVMͳ"1*ʹ͓͚Δ63-ઃܭʹ͍ۙ
    w ·͞ʹϦιʔεઃܭ
    w εΩʔϚͷେ͖ͳ෼͚ํ
    w ࢀরܥ͸2VFSZ
    w ߋ৽ܥ͸.VUBUJPO
    74
    

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75. εΩʔϚ 2VFSZ
    
    w SPPUϨϕϧ͸ඇৗʹॏཁ
    w ʮ(SBQI2-͸ΫϥΠΞϯτ͕ඞཁͳσʔλ͚ͩ
    Λબ୒ͯ͠औಘ͢Δ͜ͱ͕ग़དྷΔʯͷى఺
    w ͔͜͜Βؔ࿈Λ୧͍ͬͯ͘͜ͱʹͳΔ
    type Query {
    projects: [Project!]!
    tasks(status: TaskStatus): [Task!]!
    users(arg: UserSearchCondition): [User!]!
    }
    75
    

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76. εΩʔϚ 2VFSZ
    
    w AWJFXFSA
    w ϦΫΤετ͖ͯͨ͠Ϣʔβࣗ਎ʹඥͮ͘৘ใ
    w ࣗ෼ࣗ਎ΛOPOOVMMͰఏڙͨ͠Γ
    type Query {
    projects: [Project!]!
    tasks: [Task!]!
    users: [User!]!
    viewer: ViewerQuery!
    }
    type ViewerQuery {
    self: User!
    assignedTasks: [Task!]!
    belongsTo: [Project!]!
    }
    76
    

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77. εΩʔϚ 2VFSZ
    
    w AWJFXFSA
    w ϦΫΤετ͖ͯͨ͠Ϣʔβࣗ਎ʹඥͮ͘৘ใ
    w ࣗ෼ࣗ਎ΛOPOOVMMͰఏڙͨ͠Γ
    w (JUIVCWΛύΫΔ
    77
    

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78. εΩʔϚ .VUBUJPO
    
    w શͯSPPUϨϕϧʹฒ΂Δͷ͕Φεεϝ
    w ωετͨ͠.VUBUJPO͸࣮ߦॱং͕อূ͞Εͳ͍
    mutation {
    CreateTask(…) { id }
    UpdateTask(…) { id } // CreateTaskͷޙʹ࣮ߦ͞ΕΔ
    }
    mutation {
    Task {
    Create(…) { id }
    Update(…) { id } // Createͷޙʹ࣮ߦ͞ΕΔอূ͸ͳ͍
    }
    }
    78
    

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79. εΩʔϚ .VUBUJPO
    
    w "SHVNFOUͱ*OQVU0CKFDU5ZQF͸͓޷ΈͰྑͦ͞͏
    w 63-ύϥϝʔλPS+40/ͷΠϝʔδ
    w *OQVU0CKFDU5ZQF͸DBTFDMBTTʹύʔεग़དྷͯศར
    79
    *OQVU0CKFDU5ZQF
    "SHVNFOU
    

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80. όʔδϣχϯά
    80
    

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81. όʔδϣχϯά
    w Α͋͘Δޡղ
    w ʮ(SBQI2-ͩͱόʔδϣχϯά͠ͳͯ͘Α͍ʯ
    81
    

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82. όʔδϣχϯά
    w "1*ͷύεͱͯ͠όʔδϣχϯά͸ෆཁ
    w WHSBQIRM
    w WHSBQIRM
    82
    "
    

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83. όʔδϣχϯά
    w εΩʔϚͷόʔδϣχϯά͸ඞཁ
    w ϑΟʔϧυͷ௥ՃͷΈɺͩͱෆཁ
    w มߋ͸!EFQFSFDBUFE͚ͭͯɺมߋޙͷϑΟʔϧ
    υผ໊Ͱ௥Ճɺ͠͹Βͨ͘͠ΒมߋલͷΛফ͢
    w ࡟আ͸!EFQFSFDBUFE͚ͭͯ͠͹Βͨ͘͠Βফ͢
    w %#ͷεΩʔϚͱಉ͡Α͏ͳϑϩʔ
    w ϑΟʔϧυ໊͸ඇৗʹॏཁ
    w มߋͮ͠Β͍ɺͱ͍͏ͷΛ೦಄ʹஔ͍͓ͯ͘
    83
    

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84. όʔδϣχϯά
    w 'JFMEʹAEFQSFDBUFE3FBTPOAΛ༩͑Δ
    84
    Field("name", StringType,
    resolve = { ctx => ctx.value.name }),
    Field("displayName", StringType,
    deprecationReason = Some("use `name` instead"),
    resolve = { ctx => ctx.value.name }),
    

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85. (SBQI2-ʹ͓͚Δ
    $POUFYU
    85
    

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86. val userType: ObjectType[Ctx, User] = ObjectType[Ctx, User](
    "User", fields[Ctx, User](
    Field("id", IDType, resolve = { _.value.id }),
    Field("name", StringType, resolve = {
    ctx: Context[Ctx, User] => ctx.value.name }),
    Field("status", userStatusType, resolve = { _.value.status }),
    Field("projects", ListType(projectType), resolve = { ctx =>
    ProjectResolver.byIds(ctx.value.projectIds)(ctx.ctx)
    })
    )
    )
    0CKFDU5ZQF
    86
    

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87. (SBQI2-ʹ͓͚Δ$POUFYU
    w (SBQI2-ͷܕʹ͓͚ΔSFTPMWFΛఆٛ͢Δࡍʹొ৔
    ͢Δ$POUFYUʹԿΛ࣋ͨͤΔ͔
    w ʮ$POUFYUʯͱ͍͏໊લ͕೉͍͠
    w DPOUFYUVBMͳ৘ใͬͯԿʁ
    87
    

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88. (SBQI2-ʹ͓͚Δ$POUFYU
    w ྫϩάΠϯதͷϢʔβ΍%#΁ͷΞΫηεΛ࣋ͭ
    context"WBMVFXIJDIJTQSPWJEFEUPFWFSZSFTPMWFSBOEIPMET
    JNQPSUBOUDPOUFYUVBMJOGPSNBUJPOMJLFUIFDVSSFOUMZMPHHFEJOVTFS
    PSBDDFTTUPBEBUBCBTF
    IUUQTHSBQIRMPSHMFBSOFYFDVUJPOSPPUpFMETSFTPMWFST
    88
    

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89. (SBQI2-ʹ͓͚Δ$POUFYU
    w %#ΞΫηεՄೳͳ4FSWJDF3FQPTJUPSZͳͲ
    89
    IUUQTTBOHSJBHSBQIRMPSHMFBSOJOQVUBOEDPOUFYUPCKFDUT
    

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90. (SBQI2-ʹ͓͚Δ$POUFYU
    w ͳΔ΄Ͳɺ%"0΍4FSWJDF΍3FQPTJUPSZΛ$POUFYU
    ͔ΒΞΫηεग़དྷΔΑ͏ʹͨ͠Βྑ͍Μͩͳʂ
    90
    

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91. (SBQI2-ʹ͓͚Δ$POUFYU
    w ͳΔ΄Ͳɺ%"0΍4FSWJDF΍3FQPTJUPSZΛ$POUFYU
    ͔ΒΞΫηεग़དྷΔΑ͏ʹͨ͠Βྑ͍Μͩͳʂ
    91
    ͓͢͢Ί͠ͳ͍
    

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92. (SBQI2-ʹ͓͚Δ$POUFYU
    w %"0͕શͯͷϑΟʔϧυ͔Β$POUFYUܦ༝Ͱ޷͖
    উखʹΞΫηεग़དྷΔΑ͏ʹͳͬͯ͠·ͬͯϨΠ
    Ϡʔ͕յΕΔ
    w SFTPMWFؔ਺ͰશͯΛ΍ͬͯ͠·͑Δঢ়ଶʹ
    w ݁Ռͱͯ͠(SBQI2-ϨΠϠ͕ް͘ͳΔ
    92
    

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93. (SBQI2-ʹ͓͚Δ$POUFYU
    w $POUFYU͸ಉҰϦΫΤετ಺Ͱڞ௨ͯ͠ࢀরՄೳ
    w (SBQI2-ΫΤϦͷ࣮ߦ୯Ґ ϦΫΤετ
    Ͱڞ௨͠
    ͯࢀর͍ͨ͠΋ͷΛ࣋ͨͤΔ΂͖
    w ϩάΠϯϢʔβ
    w τϥϯβΫγϣϯ
    w &YFDVUJPO$POUFYU
    w FUD
    93
    

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94. w $POUFYUͷ࣮૷ྫ
    w ϩάΠϯϢʔβ
    w τϥϯβΫγϣϯ %#4FTTJPO
    
    w &YFDVUJPO$POUFYU
    class GraphQLContext(
    userOpt: Option[User],
    session: DBSession,
    ec: ExecutionContext
    )
    (SBQI2-ʹ͓͚Δ$POUFYU
    94
    

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95. ೝূೝՄ
    95
    

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96. ೝূೝՄ
    w 8FCΞϓϦέʔγϣϯͳΒେମ͋Δ΍ͭ
    w ೝূ "VUIFOUJDBUJPO
    
    w ୭͔Λಛఆ͢Δ
    w ೝՄ "VUIPSJ[BUJPO
    
    w ݖݶΛ֬ೝ͢Δ
    w (SBQI2-ͱͲ͏૊Έ߹ΘͤΔ΂͖͔ɺͱ͍͏࿩
    96
    

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97. ೝূ
    w ೝূͨ݁͠Ռ͸શମͰ࢖͍ճ͍ͨ͠
    w ෳ਺ͷ2VFSZ.VUBUJPOΛಉ࣌ʹ࣮ߦ͢Δࡍʹɺ
    ผʑʹೝূΛ͢Δͷ͸ྲྀੴʹڐ༰Ͱ͖ͳ͍
    w ೝূॲཧͦͷ΋ͷ͸(SBQI2-ͱ͸ؔ܎ͳ͍
    w $PPLJF࢖͓͏͕+85࢖͓͏͕͓޷͖ʹ
    97
    

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98. ೝূ
    w (SBQI2-ͷ$POUFYUΛ࡞੒͢ΔࡍʹೝূΛߦ͏
    w ೝূ݁ՌΛ$POUFYUʹೖΕͯ͠·͑͹ڞ༗ग़དྷΔ
    98
    object GraphQLContext {
    def create(userIdOpt: Option[String])(
    implicit ec: ExecutionContext, s: DBSession): GraphQLContext = {
    userIdOpt.flatMap { userId =>
    authenticate(userId).map { user =>
    new GraphQLContext(Some(user), ec, s)
    }
    } getOrElse { new GraphQLContext(None, ec, s) }
    }
    private def authenticate(userId: String): Option[User] = ???
    }
    GBDUPSZͰೝূͭͭ͠ੜ੒
    

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99. ೝূ
    w ೝূΛඞཁͱ͢Δ2VFSZ.VUBUJPOΛ࣮૷͢Δ
    w ೝূॲཧͦͷ΋ͷ͸(SBQI2-ͱ͸੾Γ཭͢
    w .JEEMFXBSF͕࢖͏ͱڧ੍Ͱ͖ͯศར
    w ΫΤϦ࣮ߦͷCFGPSFBGUFSʹॲཧΛࠩ͠ࠐΊΔ
    w TBOHSJBFYFDVUJPO഑ԼͷΫϥεΛར༻͢Δ
    w 'JFME5BH
    w .JEEMFXBSF.JEEMFXBSF#FGPSF'JFME
    99
    

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100. w ೝূඞਢʹ͍ͨ͠pFMEͷఆٛʹUBHΛ෇༩͢Δ
     w &YFDVUPSFYFDVUFʹNJEEMFXBSFͱͯ͠
     "VUIFOUJDBUJPO'JMUFSΛ༩͑Ε͹ಈ͘
     ೝূ
     val self: Field[Ctx, User] = Field(
     "self",
     userType,
     tags = Middlewares.RequireAuthentication :: Nil,
     resolve = { ctx => ctx.ctx.loggedInUser }
     )
     ೝূඞਢͳ͜ͱΛλάͰ໌ࣔ
     Executor.execute[Ctx, Unit, JsObject](
     schema, queryDocument, context,
     middleware = AuthenticationFilter :: Nil
     )
     100
     

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101. ೝূ
     type Ctx = GraphQLContext
     case object RequireAuthentication extends FieldTag
     object AuthenticationFilter extends MiddlewareBeforeField[Ctx] {
     override type QueryVal = Unit
     override type FieldVal = Unit
     private type MCtx = MiddlewareQueryContext[Ctx, _, _]
     override def beforeQuery(context: MCtx) = ()
     override def afterQuery(queryVal: QueryVal, context: MCtx) = ()
     override def beforeField(queryVal: QueryVal,
     mctx: MCtx,
     ctx: Context[Ctx, _]) = {
     if (ctx.field.tags contains RequireAuthentication) {
     if (!ctx.ctx.isLoggedIn) {
     throw AuthenticationError("must logged in!")
     }
     }
     continue
     }
     }
     101
     

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102. type Ctx = GraphQLContext
     case object RequireAuthentication extends FieldTag
     object AuthenticationFilter extends MiddlewareBeforeField[Ctx] {
     override type QueryVal = Unit
     override type FieldVal = Unit
     private type MCtx = MiddlewareQueryContext[Ctx, _, _]
     override def beforeQuery(context: MCtx) = ()
     override def afterQuery(queryVal: QueryVal, context: MCtx) = ()
     override def beforeField(queryVal: QueryVal,
     mctx: MCtx,
     ctx: Context[Ctx, _]) = {
     if (ctx.field.tags contains RequireAuthentication) {
     if (!ctx.ctx.isLoggedIn) {
     throw AuthenticationError("must logged in!")
     }
     }
     continue
     }
     }
     ೝূ
     ೝূඞਢͳϑΟʔϧυʹ෇༩͢Δ5BH
     102
     

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103. type Ctx = GraphQLContext
     case object RequireAuthentication extends FieldTag
     object AuthenticationFilter extends MiddlewareBeforeField[Ctx] {
     override type QueryVal = Unit
     override type FieldVal = Unit
     private type MCtx = MiddlewareQueryContext[Ctx, _, _]
     override def beforeQuery(context: MCtx) = ()
     override def afterQuery(queryVal: QueryVal, context: MCtx) = ()
     override def beforeField(queryVal: QueryVal,
     mctx: MCtx,
     ctx: Context[Ctx, _]) = {
     if (ctx.field.tags contains RequireAuthentication) {
     if (!ctx.ctx.isLoggedIn) {
     throw AuthenticationError("must logged in!")
     }
     }
     continue
     }
     }
     ೝূ
     0CKFDU5ZQF౳ͷpFMEʹࠩ͠ࠐΉॲཧ
     103
     

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104. type Ctx = GraphQLContext
     case object RequireAuthentication extends FieldTag
     object AuthenticationFilter extends MiddlewareBeforeField[Ctx] {
     override type QueryVal = Unit
     override type FieldVal = Unit
     private type MCtx = MiddlewareQueryContext[Ctx, _, _]
     override def beforeQuery(context: MCtx) = ()
     override def afterQuery(queryVal: QueryVal, context: MCtx) = ()
     override def beforeField(queryVal: QueryVal,
     mctx: MCtx,
     ctx: Context[Ctx, _]) = {
     if (ctx.field.tags contains RequireAuthentication) {
     if (!ctx.ctx.isLoggedIn) {
     throw AuthenticationError("must logged in!")
     }
     }
     continue
     }
     }
     ೝূ
     3FRVJSF"VUIFOUJDBUJPOλά͕෇͍ͯΔͷʹ
     ϩάΠϯͯ͠ͳ͍৔߹͸ྫ֎Λૹग़
     104
     

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105. ೝՄ
     w ೝՄ͸ΞϓϦέʔγϣϯ૚Ͱߦ͏
     w (SBQI2-ʹ͸ؔ܎ͳ͍࿩ͳͷͰׂѪ
     105
     

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106. %#τϥϯβΫγϣϯ
     106
     

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107. %#τϥϯβΫγϣϯ
     w Ͳͷ୯ҐͰτϥϯβΫγϣϯΛ࣮ߦ͢Δ͔
     w ͍ͭ#FHJO͍ͯͭ͠$PNNJU3PMMCBDL͢Δ͔
     w (SBQI2-ΫΤϦ͸ෳ਺ͷ2VFSZ.VUBUJPOΛ·ͱ
     Ί࣮ͯߦ͢Δ͜ͱ͕ग़དྷΔ
     w ಛʹ.VUBUJPO͸ߋ৽ܥͳͷͰτϥϯβΫγϣϯ
     Λผʑʹ͍ͨ͠ͱ͍͏ཉٻ͸͋Δ͸ͣ
     107
     

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108. %#τϥϯβΫγϣϯ
     w ݁࿦ɺϦΫΤετʹରͯ͠τϥϯβΫγϣϯ
     w ຊ౰ʹτϥϯβΫγϣϯΛผʹ͍ͨ͠ૢ࡞ΛϦ
     ΫΤετʹ৐ͤͯ·ͱΊ࣮ͯߦ͢Δ͜ͱ͕͋Δ
     ͩΖ͏͔ʁ
     108
     

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109. %#τϥϯβΫγϣϯ
     w τϥϯβΫγϣϯͷ੹຿͕(SBQI2-ϨΠϠʹʜ
     w $POUFYUʹ࣋ͨͤͯΫΤϦؒͰڞ༗͢Δ
     w ઃܭతʹ͸ͪΐͬͱඍົͳؾ࣋ͪ
     w ԿΛ༏ઌ͢Δ͔Ͱܾఆ͢Δ΂͖
     109
     

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110. ΤϥʔϋϯυϦϯά
     110
     

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111. ΤϥʔϋϯυϦϯά
     w (SBQI2-Ͱ͸εςʔλείʔυ͸جຊతʹ
     w Τϥʔ͸ϨεϙϯεϘσΟʹೖΕͯฦ٫͞ΕΔ
     111
     

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112. ΤϥʔϋϯυϦϯά
     w ෳ਺ͷ2VFSZ.VUBUJPOΛ࣮ߦͨ͠ࡍʹɺͲΕ͔
     ͭͰ΋ࣦഊͨ͠Βશମ͕Τϥʔʹͳͬͯ͠·͏
     ͱ͍͏໰୊͕͋Δ
     w ྫɿτοϓϖʔδͷදࣔʹඞཁͳϦιʔεΛ·
     ͱΊͯऔಘͨ͠ΒɺҰ෦෼͚ͩऔಘʹࣦഊͨ͠
     ͚ͩͰશମ͕ਅͬനʹͳΔ
     w ϚΠΫϩαʔϏε࣌୅ʹ͙ͦΘͳ͍ײ
     w #''ʹ࢖͍ਏ͍ʜ
     112
     

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113. ΤϥʔϋϯυϦϯά
     w ͍Ζ͍Ζબ୒ࢶ͸͋Δ
     w શ෦औಘͰ͖ͳ͍ͱҙຯແ͍୯ҐͰΫΤϦൃߦ
     w গʑࣦഊͯ͠΋ϦτϥΠ͢Ε͹͑͑΍Μ
     w FUD
     w ੒ޭࣦഊΛಉډͤ͞Δͷ͸͔ͳΓେมͦ͏
     w 6OJPO5ZQFʹͯ͠੒ޭࣦഊΛදݱ͢Δͱ͔ʁ
     w SFTPMWFͰྫ֎͕౤͛ΒΕͳ͍Α͏ʹέΞ͕ඞཁ
     113
     

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114. ΤϥʔϋϯυϦϯά
     w ͰɺͲ͏͍ͯ͠Δ͔
     w Ұ෦ͷΤϥʔΛશମͷΤϥʔͱ͍ͯ͠Δ
     w ࣮૷ίετͱͷ݉Ͷ߹͍
     w Ұ෦Ͱ΋ࣦഊ͢ΔͷͬͯԿ͔͕͓͔͍͠
     w #''ͳΒಛఆͷΞϓϦ͕ෆ௨ʹͳΔՄೳੑ΋
     w ୯ҰΞϓϦͳΒ૝ఆ͢Δඞཁͳ͍
     114
     

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115. ΤϥʔϋϯυϦϯά
     w Τϥʔͷछྨ͚ͩΘ͔ΔΑ͏ʹ
     w ϦΫΤετෆਖ਼αʔόΤϥʔೝূΤϥʔ
     sealed abstract class ErrorType(val value: String)
     object ErrorType {
     case object BadRequest extends ErrorType("BadRequest")
     case object ServerError extends ErrorType("ServerError")
     case object AuthError extends ErrorType("AuthError")
     }
     implicit val error = derive.deriveEnumType[ErrorType]()
     115
     

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116. ΤϥʔϋϯυϦϯά
     w Τϥʔͷछྨ͚ͩΘ͔ΔΑ͏ʹ
     w ϦΫΤετෆਖ਼αʔόΤϥʔೝূΤϥʔ
     sealed abstract class ErrorType(val value: String)
     object ErrorType {
     case object BadRequest extends ErrorType("BadRequest")
     case object ServerError extends ErrorType("ServerError")
     case object AuthError extends ErrorType("AuthError")
     }
     implicit val error = derive.deriveEnumType[ErrorType]()
     def handleException(m: ResultMarshaller, msg: String, tp: ErrorType) =
     HandledException(
     msg,
     additionalFields = Map("type" -> m.enumNode(tp.value, error.name)),
     addFieldsInExtensions = false,
     addFieldsInError = true
     )
     )BOEMFE&YDFQUJPOΛ࢖͑͹
     (SBQI2-ͬΆ͍ΤϥʔϝοηʔδΛฦ٫Ͱ͖Δ
     116
     

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117. ΤϥʔϋϯυϦϯά
     w Τϥʔͷछྨ͚ͩΘ͔ΔΑ͏ʹ
     w ϦΫΤετෆਖ਼αʔόΤϥʔೝূΤϥʔ
     sealed abstract class ErrorType(val value: String)
     object ErrorType {
     case object BadRequest extends ErrorType("BadRequest")
     case object ServerError extends ErrorType("ServerError")
     case object AuthError extends ErrorType("AuthError")
     }
     implicit val error = derive.deriveEnumType[ErrorType]()
     def handleException(m: ResultMarshaller, msg: String, tp: ErrorType) =
     HandledException(
     msg,
     additionalFields = Map("type" -> m.enumNode(tp.value, error.name)),
     addFieldsInExtensions = false,
     addFieldsInError = true
     )
     117
     

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118. ΤϥʔϋϯυϦϯά
     w ϋϯυϦϯά͢Δ΂͖Τϥʔ͕ଟ͍
     w +40/ͷTZOUBYΤϥʔ
     w ΫΤϦͷTZOUBYΤϥʔɺWBMJEBUJPOΤϥʔ
     w ϏδωεϩδοΫ্ͷΤϥʔ
     w ͦͷଞɺUISPX͞ΕͨΤϥʔ
     w Ͳ͏΍ͬͯϋϯυϦϯά͢Δʁ
     w &YDFQUJPO)BOEMFSΛؤு࣮ͬͯ૷͢Δ
     w &YFDVUPSFYFDVUFͷSFDPWFSͰ΋ؤுΔ
     118
     

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119. ΤϥʔϋϯυϦϯά
     private val exceptionHandler = {
     def handleException(m: ResultMarshaller, msg: String, tp: ErrorType) =
     HandledException(
     msg,
     additionalFields = Map("type" -> m.enumNode(tp.value, errorType.name)),
     addFieldsInExtensions = false,
     addFieldsInError = true
     )
     val onException: PartialFunction[(ResultMarshaller, Throwable), HandledException] = {
     case (m, qa: QueryAnalysisError) =>
     logger.warn(s"QueryAnalysisError occurred. msg = ${qa.getMessage}")
     handleException(m, qa.getMessage, ErrorType.BadRequest)
     case (m, se: SyntaxError) =>
     logger.info(s"SyntaxError occurred. msg = ${se.getMessage()}")
     handleException(m, se.getMessage, ErrorType.BadRequest)
     case (m, ewr: ErrorWithResolver) =>
     logger.error(s"ErrorWithResolver occurred. msg = ${ewr.getMessage}", ewr)
     handleException(m, ewr.getMessage, ErrorType.ServerError)
     case (m, AuthenticationError(msg)) =>
     logger.info(s"AuthenticationError occurred. msg = ${msg}")
     handleException(m, msg, ErrorType.BadRequest)
     case (m, NotFoundException(msg)) =>
     logger.info(s"NotFoundException occurred. msg = ${msg}")
     handleException(m, msg, ErrorType.BadRequest)
     case (m, t: Throwable) =>
     logger.error(s"unknown server error occurred. msg = ${t.getMessage}", t)
     handleException(m, t.getMessage, ErrorType.ServerError)
     }
     val onViolation: PartialFunction[(ResultMarshaller, Violation), HandledException] = {
     case (m, v) =>
     logger.warn(s"Violation error occurred. msg = ${v.errorMessage}")
     handleException(m, v.errorMessage, ErrorType.BadRequest)
     }
     val onUserFacingError
     : PartialFunction[(ResultMarshaller, UserFacingError), HandledException] = {
     case (m, v: WithViolations) =>
     logger.warn(s"WithViolations occurred. msg = ${v.getMessage()}")
     handleException(m, v.getMessage, ErrorType.BadRequest)
     case (m, ie: InternalError) =>
     logger.error(s"InternalError occurred. msg = ${ie.getMessage()}", ie)
     handleException(m, ie.getMessage, ErrorType.ServerError)
     case (m, ee: ExecutionError) =>
     logger.error(s"ExecutionError occurred. msg = ${ee.getMessage()}", ee)
     handleException(m, ee.getMessage, ErrorType.ServerError)
     case (m, ufe) =>
     logger.warn(s"UserFacingError occurred. msg = ${ufe.getMessage()}")
     handleException(m, ufe.getMessage, ErrorType.BadRequest)
     }
     ExceptionHandler(onException, onViolation, onUserFacingError)
     }
     Future.fromTry(QueryParser.parse(document)) zip GraphQLContext.create(userIdOpt) flatMap {
     case (queryDocument: Document, context: GraphQLContext) =>
     val result: Future[JsValue] =
     Executor.execute[Ctx, Unit, JsObject](
     schema,
     queryDocument,
     context,
     exceptionHandler = exceptionHandler,
     operationName = operation,
     variables = vars,
     middleware = Middlewares.value
     )
     result
     .map { jsValue =>
     OK -> jsValue
     }
     .recover {
     case error: QueryAnalysisError =>
     BadRequest -> error.resolveError
     case error: ErrorWithResolver =>
     InternalServerError -> error.resolveError
     }
     } recover {
     case v: SyntaxError =>
     BadRequest -> new Exception(v.getMessage()) with ErrorWithResolver with WithViolations {
     override def exceptionHandler: ExceptionHandler = GraphQLServer.exceptionHandler
     override def violations: Vector[Violation] = Vector.empty
     }.resolveError
     case v: ValidationError =>
     BadRequest -> v.resolveError
     case NonFatal(t) =>
     InternalServerError -> InternalError(t, GraphQLServer.exceptionHandler).resolveError
     }
     119
     

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120. ΤϥʔϋϯυϦϯά
     private val exceptionHandler = {
     def handleException(m: ResultMarshaller, msg: String, tp: ErrorType) =
     HandledException(
     msg,
     additionalFields = Map("type" -> m.enumNode(tp.value, errorType.name)),
     addFieldsInExtensions = false,
     addFieldsInError = true
     )
     val onException: PartialFunction[(ResultMarshaller, Throwable), HandledException] = {
     case (m, qa: QueryAnalysisError) =>
     logger.warn(s"QueryAnalysisError occurred. msg = ${qa.getMessage}")
     handleException(m, qa.getMessage, ErrorType.BadRequest)
     case (m, se: SyntaxError) =>
     logger.info(s"SyntaxError occurred. msg = ${se.getMessage()}")
     handleException(m, se.getMessage, ErrorType.BadRequest)
     case (m, ewr: ErrorWithResolver) =>
     logger.error(s"ErrorWithResolver occurred. msg = ${ewr.getMessage}", ewr)
     handleException(m, ewr.getMessage, ErrorType.ServerError)
     case (m, AuthenticationError(msg)) =>
     logger.info(s"AuthenticationError occurred. msg = ${msg}")
     handleException(m, msg, ErrorType.BadRequest)
     case (m, NotFoundException(msg)) =>
     logger.info(s"NotFoundException occurred. msg = ${msg}")
     handleException(m, msg, ErrorType.BadRequest)
     case (m, t: Throwable) =>
     logger.error(s"unknown server error occurred. msg = ${t.getMessage}", t)
     handleException(m, t.getMessage, ErrorType.ServerError)
     }
     val onViolation: PartialFunction[(ResultMarshaller, Violation), HandledException] = {
     case (m, v) =>
     logger.warn(s"Violation error occurred. msg = ${v.errorMessage}")
     handleException(m, v.errorMessage, ErrorType.BadRequest)
     }
     val onUserFacingError
     : PartialFunction[(ResultMarshaller, UserFacingError), HandledException] = {
     case (m, v: WithViolations) =>
     logger.warn(s"WithViolations occurred. msg = ${v.getMessage()}")
     handleException(m, v.getMessage, ErrorType.BadRequest)
     case (m, ie: InternalError) =>
     logger.error(s"InternalError occurred. msg = ${ie.getMessage()}", ie)
     handleException(m, ie.getMessage, ErrorType.ServerError)
     case (m, ee: ExecutionError) =>
     logger.error(s"ExecutionError occurred. msg = ${ee.getMessage()}", ee)
     handleException(m, ee.getMessage, ErrorType.ServerError)
     case (m, ufe) =>
     logger.warn(s"UserFacingError occurred. msg = ${ufe.getMessage()}")
     handleException(m, ufe.getMessage, ErrorType.BadRequest)
     }
     ExceptionHandler(onException, onViolation, onUserFacingError)
     }
     Future.fromTry(QueryParser.parse(document)) zip GraphQLContext.create(userIdOpt) flatMap {
     case (queryDocument: Document, context: GraphQLContext) =>
     val result: Future[JsValue] =
     Executor.execute[Ctx, Unit, JsObject](
     schema,
     queryDocument,
     context,
     exceptionHandler = exceptionHandler,
     operationName = operation,
     variables = vars,
     middleware = Middlewares.value
     )
     result
     .map { jsValue =>
     OK -> jsValue
     }
     .recover {
     case error: QueryAnalysisError =>
     BadRequest -> error.resolveError
     case error: ErrorWithResolver =>
     InternalServerError -> error.resolveError
     }
     } recover {
     case v: SyntaxError =>
     BadRequest -> new Exception(v.getMessage()) with ErrorWithResolver with WithViolations {
     override def exceptionHandler: ExceptionHandler = GraphQLServer.exceptionHandler
     override def violations: Vector[Violation] = Vector.empty
     }.resolveError
     case v: ValidationError =>
     BadRequest -> v.resolveError
     case NonFatal(t) =>
     InternalServerError -> InternalError(t, GraphQLServer.exceptionHandler).resolveError
     }
     ΍Δ͔͠ͳ͍
     120
     

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121. /໰୊
     121
     

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122. /໰୊
     w (SBQI2-Ͱ͸ϦΫΤετΛճʹݻఆͰ͖Δ
     w ؔ࿈Λ୧ͬͯඞཁͳσʔλΛऔಘ͢Δ
     w ݁Ռͱͯ͠/ͳ42-͕ൃߦ͞Ε͕ͪ
     122
     

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123. /໰୊
     QSPKFDU͕/ݸ͋Ε͹
     VTFST΋/ճऔಘ͢Δɺ
     ·͞ʹ/ͳঢ়ଶ
     123
     

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124. /໰୊
     w /Λճආ͢ΔͨΊͷ࢓૊Έ͕ఏڙ͞Ε͍ͯΔ
     w %FGFSSFE3FTPMWFS
     w 'FUDIFS
     w SFTPMWF͢ΔͷΛ஗Βͤͯɺ·ͱΊͯऔಘͰ͖Δ΋
     ͷΛ·ͱΊͯऔಘ͢ΔΑ͏ʹ͢Δ
     w pOE#Z*E/ΛpOE#Z*ETʹ͢Δ͚ͩͳΠϝʔδ
     w Ωϟογϡͨ͠Γ΋Մೳ
     124
     

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125. object UserResolver {
     private implicit lazy val hasId: HasId[User, UserId] = HasId(_.id)
     val userFetcher: Fetcher[GraphQLContext, User, User, UserId] = {
     Fetcher.apply { (ctx: GraphQLContext, ids: Seq[UserId]) =>
     UserDao.findByIds(ids)(ctx.ec)
     }
     }
     def byId(userId: UserId)(
     implicit ctx: GraphQLContext): DeferredValue[GraphQLContext, User] = {
     DeferredValue(userFetcher.defer(userId))
     }
     }
     /໰୊
     125
     

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126. object UserResolver {
     private implicit lazy val hasId: HasId[User, UserId] = HasId(_.id)
     val userFetcher: Fetcher[GraphQLContext, User, User, UserId] = {
     Fetcher.apply { (ctx: GraphQLContext, ids: Seq[UserId]) =>
     UserDao.findByIds(ids)(ctx.ec)
     }
     }
     def byId(userId: UserId)(
     implicit ctx: GraphQLContext): DeferredValue[GraphQLContext, User] = {
     DeferredValue(userFetcher.defer(userId))
     }
     }
     /໰୊
     126
     4FR<6TFS*E>4FR<6TFS>ͳॲཧ
     

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127. object UserResolver {
     private implicit lazy val hasId: HasId[User, UserId] = HasId(_.id)
     val userFetcher: Fetcher[GraphQLContext, User, User, UserId] = {
     Fetcher.apply { (ctx: GraphQLContext, ids: Seq[UserId]) =>
     UserDao.findByIds(ids)(ctx.ec)
     }
     }
     def byId(userId: UserId)(
     implicit ctx: GraphQLContext): DeferredValue[GraphQLContext, User] = {
     DeferredValue(userFetcher.defer(userId))
     }
     }
     /໰୊
     127
     4FR<6TFS*E>4FR<6TFS>ͳॲཧΛ
     ϥοϓ͢Δ'FUDIFS
     

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128. object UserResolver {
     private implicit lazy val hasId: HasId[User, UserId] = HasId(_.id)
     val userFetcher: Fetcher[GraphQLContext, User, User, UserId] = {
     Fetcher.apply { (ctx: GraphQLContext, ids: Seq[UserId]) =>
     UserDao.findByIds(ids)(ctx.ec)
     }
     }
     def byId(userId: UserId)(
     implicit ctx: GraphQLContext): DeferredValue[GraphQLContext, User] = {
     DeferredValue(userFetcher.defer(userId))
     }
     }
     /໰୊
     128
     'FUDIFSEFGFSͰ*%Λ౉͢ͱ
     ͍͍ײ͡ʹ/Λ௵ͯ͘͠ΕΔ
     

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129. /໰୊
     129
     w ؔ࿈Λ୧Δ/Λղফ͢Δͷ΋༻ҙ͞Ε͍ͯΔ
     object UserResolver {
     private val usersByProjects: Relation[User, User, ProjectId] =
     Relation[User, ProjectId]("byProjects", { u: User =>
     u.projectIds
     })
     lazy val userFetcherByProject: Fetcher[GraphQLContext, User, User, UserId] = {
     Fetcher.relOnly { (ctx: GraphQLContext, rel: RelationIds[User]) =>
     val ids: Seq[ProjectId] = rel.apply(usersByProjects)
     UserDao.findByProjectIds(ids)(ctx.ec)
     }
     }
     def findByProjectId(projectId: ProjectId)(
     implicit ctx: GraphQLContext): DeferredValue[GraphQLContext, Seq[User]] = {
     DeferredValue(userFetcherByProject.deferRelSeq(usersByProjects, projectId))
     }
     }
     

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130. ·ͱΊ
     130
     

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131. ·ͱΊ
     w (SBQI2-ศརͩ͠Φεεϝ
     w ۜͷ஄ؙͰ͸ͳ͍ ೋ౓໨
     
     w ࣍ͷϓϩδΣΫτͰ΋࠾༻͍ͨ͠
     w 3&45΍ͬͯͨࠒͱ೰ΉϙΠϯτ͕มΘΔ
     w Ͳ͕ͬͪྑ͍ɺͱ͍͏࿩Ͱ͸ͳ͍
     w 4DBMBͱ΋૬ੑ͸ྑ͍
     w 4BOHSJBΛ࢖͑͹े෼ઓ͑Δ
     131
     

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132. ࣮ફͰ͖ͦ͏Ͱ͠ΐ͏͔ʁ
     132
     

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133. ࠓ೔ͷΰʔϧ
     ʮ࣍ͷϓϩδΣΫτͰ͸
     ɹ(SBQI2-Λ 4DBMBͰ
     ΍Γ͍ͨʂʯ
     133
     

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134. ࣮ફ(SBQI2-PO4DBMB
     4DBMBؔ੢4VNNJU
     !QFUJUWJPMFU
     
     
     

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