Realmの処理を再利用可能かつ合成可能にする

https://github.com/ukitaka/RealmIO の解説

Transcript

1. RealmͷॲཧΛ࠶ར༻Մೳ
   ͔ͭ߹੒Մೳʹ͢Δ
   @ukitaka
   

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2. ಥવͰ͕͢Έͳ͞Μ
   

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3. RealmͷॲཧΛ͢Δؔ਺Λ
   Ͳ͏ॻ͍͍ͯ·͔͢
   

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4. ྫ͑͹͜͏
   

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5. ྫ͑͹͜͏
   RealmͷΠϯελϯε͸தͰੜ੒͢Δ
   

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6. ྫ͑͹͜͏
   τϥϯβΫγϣϯΛ࣮ߦ͢Δ
   

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7. ྑͦ͞͏ʁ
   

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8. ͍͔ͭ͘໰୊͕͋Δ
   

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9. Կ͕໰୊͔
   

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10. Կ͕໰୊͔
    ͦΕͧΕͰτϥϯβΫγϣϯ͕࣮ߦ͞Εͯ͠·͏
    

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11. τϥϯβΫγϣϯ
    • ݺͼग़͠ͷͨͼʹɺॲཧ͕࣮ߦ͞Εͯ͠·͏
    ͷͰɺ1ͭͷτϥϯβΫγϣϯʹ·ͱΊΒΕͳ
    ͍ɻॲཧΛAtomicʹͰ͖ͳ͍ɻ
    • ॲཧͷهड़ͱ࣮ࡍͷ࣮ߦ͕෼཭Ͱ͖͍ͯͳ͍ɻ
    

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12. τϥϯβΫγϣϯ
    • RealmʹݶΒͣɺҰൠతʹτϥϯβΫγϣϯͷ
    ։࢝͸ॏ͍ॲཧ
    • ຖճੜ੒͢Δͷͱ1ͭͷτϥϯβΫγϣϯʹ·
    ͱΊΔͷͰ(खݩͰܭଌͨ͠ͱ͜Ζ)10ഒҧ͏
    

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13. ͭ·Γɺ͜ͷ··Ͱ͸
    

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14. ࠶ར༻͠ʹ͍͘ʂ
    

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16. Ͳ͏͢Δʁ
    

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17. ෳ਺༻ͷؔ਺Λผʹ࡞Δʁ
    

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18. ͡Ό͋͜Ε͸…ʁ
    

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19. ͜Μͳؔ਺Λຖճ࡞Δͷʁ
    

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20. ߹੒Ͱ͖ΔΑ͏ʹ͍ͨ͠ʂ
    

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22. τϥϯβΫγϣϯͷ։࢝Λ
    ࢖͏ଆͰ΍ΒͤͯΈΔ
    

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25. ࠶ར༻ͨ͠Γɺ
    ૊Έ߹ΘͤͨΓ
    

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26. 1ͭͷτϥϯβΫγϣϯΛ
    ૊ΈཱͯΔ͜ͱ͕Ͱ͖ΔΑ͏
    ʹ͸ͳͬͨʂ
    

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27. ࣮ࡍDDDຊͳͲʹ͸ͦ͏͠Ζͱ
    ॻ͍ͯ͋Δ
    ʮΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʯ ΑΓ
    

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28. ྑͦ͞͏ʁ
    

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29. ͍͔ͭ͘໰୊͕͋Δ
    

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30. Կ͕໰୊͔
    • τϥϯβΫγϣϯͷ੍ޚͷ੹೚͸ݺͼग़͠ଆ
    ʹ͋Δ͕ɺͦͷ͜ͱΛڧ੍Ͱ͖ͳ͍ɻͭ·Γ
    ։࢝͠๨ΕͳͲΛίϯύΠϧ࣌ʹݕग़Ͱ͖ͳ
    ͍ɻ
    • γάωνϟΈ͚ͨͩͰ͸τϥϯβΫγϣϯͷ
    ։͕࢝ඞཁͳͷ͔Ͳ͏͔Θ͔Βͳ͍ɻ
    

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31. Կ͕໰୊͔
    τϥϯβΫγϣϯΛ։࢝͢΂͖ʁ
    ࣮͸Կ͔ॻ͖ࠐΜͰ͍ͨΓ͠ͳ͍ʁ
    (ಡΈࠐΈΛͯ͠ɺͳ͚Ε͹৽ن࡞੒ͱ͔)
    

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33. Կ͕໰୊͔
    • ຖճҾ਺Ͱ౉͢ͷͪΐͬͱΊΜͲ͍͘͞
    • σϑΥϧτઃఆͷRealmΛ࢖͏ͱ͍͏҉໧ͷ
    ྃղ͕͋Ε͹౉ͣ͞ʹதͰੜ੒ͯ͠΋ྑ͍
    ͕…
    

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35. ੔ཧ: Ͳ͏ͳ͍ͬͯΕ͹ཧ૝͔
    • ॲཧͷ಺༰Λఆٛͭͭ͠ɺͦΕͧΕΛ߹੒Ͱ͖Δ
    Α͏ʹ͍ͨ͠ɻͭ·ΓτϥϯβΫγϣϯΛ૊Έཱ
    ͯΔλΠϛϯάͱ࣮ߦͷλΠϛϯάΛ෼͚͍ͨɻ
    • τϥϯβΫγϣϯͷ։͕࢝ඞཁͰ͋Δ͜ͱΛ໌ࣔ
    తɺ੩తʹදݱ͍ͨ͠ɻ
    • Ͱ͖Ε͹࢖͍׳ΕͨI/FͰɺ؆ܿʹॻ͖͍ͨ
    

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36. ੔ཧ: Ͳ͏ͳ͍ͬͯΕ͹ཧ૝͔
    • ॲཧͷ಺༰Λఆٛͭͭ͠ɺͦΕͧΕΛ߹੒Ͱ͖Δ
    Α͏ʹ͍ͨ͠ɻͭ·ΓτϥϯβΫγϣϯΛ૊Έཱ
    ͯΔλΠϛϯάͱ࣮ߦͷλΠϛϯάΛ෼͚͍ͨɻ
    • τϥϯβΫγϣϯͷ։͕࢝ඞཁͰ͋Δ͜ͱΛ໌ࣔ
    తɺ੩తʹදݱ͍ͨ͠ɻ
    • Ͱ͖Ε͹࢖͍׳ΕͨI/FͰɺ؆ܿʹॻ͖͍ͨ
    

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37. ๻Β͸Ͳ͔͜Ͱಉ͡Α͏ͳ
    ͜ͱΛ΍͍ͬͯΔ΋ͷΛ
    ࣮͸ݟͨ͜ͱ͕͋Δ
    

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40. ͜Ε͸͋Εͩ…
    

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41. ※ۤखͳํͷͨΊʹϞβΠΫॲཧΛࢪ͍ͯ͠·͢
    

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42. ʮScalaؔ਺ܕσβΠϯ&ϓϩάϥϛϯάʯ ΑΓ
    

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43. ؔ਺ܕϓϩάϥϛϯάͷྗΛ
    आΓΔ
    

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44. ࡞ͬͨ
    

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45. RealmIO
    https://github.com/ukitaka/RealmIO
    

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46. Ͳ͏࡞͔ͬͨʁ
    

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47. ͜ΕΛ
    

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48. ͜͏͡Ό
    

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49. ͜͏͡Ό
    CurryԽ͢Δͱڞ௨ͷύλʔϯ͕ݟ͑Δ
    

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51. ͢΂ͯͷRealmͷॲཧ͸͜͏දͤΔ
    ※ʮRealmΛड͚औͬͯԿ͔Λͯ݁͠ՌΛฦ͢ʯΈ͍ͨͳײ͡Ͱ͢ɻ
    ※Errorॲཧ͸Ұ୴ߟ͑ͯ·ͤΜ
    

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52. ͞Βʹ͜ΕΛ
    

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53. ͜͏͡Ό
    

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54. ͭ·Γ͜ΕΛ
    

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55. ͜͏͡Ό
    

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56. ͜ͷܕΛϕʔεʹਐΊΔ
    

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57. ͜͜·Ͱͷ·ͱΊ
    

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58. ڞ௨෦෼͕͋ͬͨͷͰ͜͏͚ͨͩ͠
    

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59. RealmIO
    

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60. RealmIO
    

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61. RealmIO
    

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62. RealmIO
    

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63. ࣮ࡍͷίʔυͰ͸ErrorΛthrow
    Ͱ͖ΔΑ͏ʹͳ͍ͬͯΔ
    

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64. ͳΜͱͳ͘
    runΛݺͿ·Ͱ࣮ߦ͞Εͳ͍
    ײ͡͸ग़͖ͯͨ
    

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65. ͕ɺ
    ·ͩͳʹ΋ղܾ͍ͯ͠ͳ͍
    

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66. ͩΕ΋τϥϯβΫγϣϯ
    ։࢝ͯ͠ͳ͘Ͷʁ
    

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67. ࡞Δ
    

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68. τϥϯβΫγϣϯ੍ޚ
    

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69. τϥϯβΫγϣϯ੍ޚ
    Realm͕RealmIOΛҾ਺ʹऔͬͯ
    

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70. τϥϯβΫγϣϯ੍ޚ
    τϥϯβΫγϣϯ։࢝ͯ͠
    

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71. τϥϯβΫγϣϯ੍ޚ
    ࣮ߦ !!!
    

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72. τϥϯβΫγϣϯ੍ޚ
    • ࢖͏ͱ͖͸realm.run(io:) ΛݺͿΑ͏ʹ͢Δ
    • io.run͸௚઀ݺ΂ͳ͍Α͏ʹɺ࣮ࡍ͸internal
    ͳΓʹ͓ͯ͘͠ɻ
    

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73. ͱ͜ΖͰRead͚ͩͷͱ͖͸ʁ
    

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74. τϥϯβΫγϣϯ੍ޚ
    • ύϑΥʔϚϯεతʹ΋ɺແବʹτϥϯβΫ
    γϣϯΛ։࢝͢΂͖Ͱ͸ͳ͍ɻ
    • ಡΈࠐΈͷΈͷ৔߹͸τϥϯβΫγϣϯΛ։
    ࢝͠ͳ͍Α͏ʹ͢ΔͨΊʹɺॲཧ͕Readͳͷ
    ͔Writeͳͷ͔Λ൑ผ͢Δ࢓૊Έ͕ඞཁɻ
    

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75. τϥϯβΫγϣϯ੍ޚ
    ܕ৘ใ͔Β͸Read/Write͕൑ผͰ͖ͳ͍
    

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76. ࡞Δ
    

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77. ͜ΕΛ
    

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78. ͜͏͡Ό
    

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79. ͜͏͡Ό
    Read͔Write͔ΛܕύϥϝʔλͰද͢
    

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80. ͭ·Γ͜ΕΛ
    

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81. ͜͏͡Ό
    

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82. ͜͏͡Ό
    Read͔Write͔Λද͢ܕύϥϝʔλ
    

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83. ͜͏͡Ό
    ฦΓ஋ͷܕΛද͢ܕύϥϝʔλ
    

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84. τϥϯβΫγϣϯ੍ޚ
    

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85. τϥϯβΫγϣϯ੍ޚ
    Writeͷ৔߹͸τϥϯβΫγϣϯΛ
    ։͔࢝ͯ͠ΒॲཧΛ࣮ߦ
    

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86. τϥϯβΫγϣϯ੍ޚ
    Readͷ৔߹͸τϥϯβΫγϣϯΛ
    ։࢝ͤͣʹॲཧΛ࣮ߦ
    

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87. Ͱ͖͖ͯͨ
    

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88. ࣮ࡍʹެ։͍ͯ͠Δίʔυͱ
    ΄΅͓ͳ͡
    

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89. PhantomType
    ͪͳΈʹRWܕύϥϝʔλ͸
    PhantomType(༓ྶܕ)ͱ͍ͬͯɺRead /
    WriteΛද͚ͩ͢ͰɺͲͷϝιουͷγάω
    νϟʹ΋ݱΕͳ͍ɻ
    

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90. ͜͜·Ͱͷ·ͱΊ
    

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92. flatMapͰ
    ߹੒Ͱ͖ΔΑ͏ʹ͢Δ
    

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93. ࢖͍ํΠϝʔδ
    

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94. ࢖͍ํΠϝʔδ
    

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95. ͻͱͭ໰୊͕͋Δ
    

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96. ߹੒ͨ͠Β
    Read / Write
    Ͳ͏ͳΔʁ
    

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97. Read / Write
    

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98. Read / Write
    RWܕύϥϝʔλʹԠͯ͡
    ෳ਺ͷflatMapͷ࣮૷͕ඞཁ
    

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99. Read / Write
    

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100. τϥϯβΫγϣϯ
     ΋ͪΖΜrunͨ͠Β1ͭͷ
     τϥϯβΫγϣϯ಺Ͱॲཧ͕ߦΘΕΔ
     

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101. ׬੒ʂ
     

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102. ͪͳΈʹϥΠϒϥϦͰ͸ɺrealmͷ
     ϝιουͷRealmIO൛Λఏڙ
     

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103. ׬ᘳʁ
     

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104. Ͱ͖ͳ͔ͬͨ͜ͱ
     • εϨουʹ͍ͭͯ͸ͳʹ΋Ͱ͖ͳ͔ͬͨɻॲ
     ཧͷهड़ͱ࣮ߦΛ෼཭͍ͯ͠ΔͷͰɺͦͷ2ͭ
     ͕ผεϨουͰߦΘΕΔՄೳੑ͕͋ΔͷͰɺ
     ͦ͜ͷ҆શੑΛϥΠϒϥϦଆͰอূ͔ͨͬ͠
     ͕ͨɺThreadSafeReferenceͷ੍໿ͰͰ͖
     ͣɻ
     

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105. Ͱ͖ͳ͔ͬͨ͜ͱ
     objectΛҾ਺ड͚औΔϝιουʹ͓͍ͯɺ
     ݺͼग़࣌͠ͷεϨουͱ
     

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106. Ͱ͖ͳ͔ͬͨ͜ͱ
     realm.run(io:)Λݺͼग़͢εϨου͕
     ҧ͏Մೳੑ͕͋Δɻ
     

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107. Ͱ͖ͳ͔ͬͨ͜ͱ
     ඞཁͳΒTSRͰҾ͖௚࣮͢૷ΛೖΕΑ͏ͱ͕ͨ͠…
     

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108. Ͱ͖ͳ͔ͬͨ͜ͱ
     ThreadSafeReference͸τϥϯβΫγϣϯ಺Ͱ
     resolveͰ͖ͳ͍ͱ͍͏੍໿͕͋Δ
     

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109. Ͱ͖ͳ͔ͬͨ͜ͱ
     ͜͜͸τϥϯβΫγϣϯ಺ͳͷͰ
     resolveͰ͖ͳ͍
     

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110. Ͱ͖ͳ͔ͬͨ͜ͱ
     • ࣮ࡍʹେ͖ͳ໰୊ʹͳΔ͔ͱݴΘΕΔͱɺͦ
     ͜·ͰͰ͸ͳ͍(ͱߟ͍͑ͯΔ)ɻಉ͡εϨου
     Ͱrealm.run(io:)ΛݺͿ͔ɺobjectΛҾ਺Ͱड
     ͚औΔϝιου͸flatMapͷதͰ࢖͏Α͏ʹ͢
     Ε͹໰୊͸ى͖ͳ͍ɻ
     

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111. Ͱ͖ͳ͔ͬͨ͜ͱ
     • Stack overflowͷՄೳੑ͕ͳ͘͸ͳ͍ɻͰ΋ͦ
     Μͳʹ߹੒͢Δ͜ͱ͸ݱ࣮తʹ͸ͳ͍ͷͰɺ
     ΄ͱΜͲ໰୊ʹ͸ͳΒͳ͍ɻ
     • RxSwift͕Stack overflowى͜͢ͷͱಉ͘͡Β
     ͍ͷϦεΫ(΄΅ͳ͍)
     

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112. Ͱ͖ͳ͔ͬͨ͜ͱ
     • ଞͷϞφυͱ૊Έ߹ΘͤΔͷ͸(ݱࡏͷSwiftͰ
     ͸)೉͍͠ɻྫ͑͹RxSwiftΛ࢖͍ͬͯΔ৔߹ɺ
     ObservableͱRealmIOΛ͏·͘૊Έ߹ΘͤΔ
     ͷ͸ݫ͍͠ɻ
     • ͜Ε͸ߴ֊ଟ૬͕ͳ͍ͱݫ͍͕͠…Swiftʹ͸
     ೖΒͳͦ͞͏
     

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113. ࢀߟ
     • ReaderϞφυ
     • Slick (ScalaͷDBϥΠϒϥϦ)
     • ΞΠσΟΞ͸͜ΕͷDBIOAction͔Β
     • υϫϯΰൿ఻ͷτϥϯβΫγϣϯϞφυΛղઆ
     IUUQRJJUBDPNQBC@UFDIJUFNTFDEDGGB
     

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114. RealmIO
     https://github.com/ukitaka/RealmIO
     

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