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RealmͷॲཧΛ࠶ར༻Մೳ ͔ͭ߹Մೳʹ͢Δ @ukitaka
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ಥવͰ͕͢Έͳ͞Μ
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RealmͷॲཧΛ͢ΔؔΛ Ͳ͏ॻ͍͍ͯ·͔͢
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ྫ͑͜͏
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ྫ͑͜͏ RealmͷΠϯελϯεதͰੜ͢Δ
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ྫ͑͜͏ τϥϯβΫγϣϯΛ࣮ߦ͢Δ
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ྑͦ͞͏ʁ
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͍͔͕ͭ͋͘Δ
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Կ͕͔
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Կ͕͔ ͦΕͧΕͰτϥϯβΫγϣϯ͕࣮ߦ͞Εͯ͠·͏
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τϥϯβΫγϣϯ • ݺͼग़͠ͷͨͼʹɺॲཧ͕࣮ߦ͞Εͯ͠·͏ ͷͰɺ1ͭͷτϥϯβΫγϣϯʹ·ͱΊΒΕͳ ͍ɻॲཧΛAtomicʹͰ͖ͳ͍ɻ • ॲཧͷهड़ͱ࣮ࡍͷ࣮ߦ͕Ͱ͖͍ͯͳ͍ɻ
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τϥϯβΫγϣϯ • RealmʹݶΒͣɺҰൠతʹτϥϯβΫγϣϯͷ ։࢝ॏ͍ॲཧ • ຖճੜ͢Δͷͱ1ͭͷτϥϯβΫγϣϯʹ· ͱΊΔͷͰ(खݩͰܭଌͨ͠ͱ͜Ζ)10ഒҧ͏
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ͭ·Γɺ͜ͷ··Ͱ
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࠶ར༻͠ʹ͍͘ʂ
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Ͳ͏͢Δʁ
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ෳ༻ͷؔΛผʹ࡞Δʁ
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͡Ό͋͜Ε…ʁ
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͜ΜͳؔΛຖճ࡞Δͷʁ
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߹Ͱ͖ΔΑ͏ʹ͍ͨ͠ʂ
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τϥϯβΫγϣϯͷ։࢝Λ ͏ଆͰΒͤͯΈΔ
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࠶ར༻ͨ͠Γɺ Έ߹ΘͤͨΓ
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1ͭͷτϥϯβΫγϣϯΛ ΈཱͯΔ͜ͱ͕Ͱ͖ΔΑ͏ ʹͳͬͨʂ
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࣮ࡍDDDຊͳͲʹͦ͏͠Ζͱ ॻ͍ͯ͋Δ ʮΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʯ ΑΓ
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ྑͦ͞͏ʁ
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͍͔͕ͭ͋͘Δ
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Կ͕͔ • τϥϯβΫγϣϯͷ੍ޚͷݺͼग़͠ଆ ʹ͋Δ͕ɺͦͷ͜ͱΛڧ੍Ͱ͖ͳ͍ɻͭ·Γ ։࢝͠ΕͳͲΛίϯύΠϧ࣌ʹݕग़Ͱ͖ͳ ͍ɻ • γάωνϟΈ͚ͨͩͰτϥϯβΫγϣϯͷ ։͕࢝ඞཁͳͷ͔Ͳ͏͔Θ͔Βͳ͍ɻ
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Կ͕͔ τϥϯβΫγϣϯΛ։͖࢝͢ʁ ࣮Կ͔ॻ͖ࠐΜͰ͍ͨΓ͠ͳ͍ʁ (ಡΈࠐΈΛͯ͠ɺͳ͚Ε৽ن࡞ͱ͔)
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Կ͕͔ • ຖճҾͰ͢ͷͪΐͬͱΊΜͲ͍͘͞ • σϑΥϧτઃఆͷRealmΛ͏ͱ͍͏҉ͷ ྃղ͕͋Εͣ͞ʹதͰੜͯ͠ྑ͍ ͕…
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ཧ: Ͳ͏ͳ͍ͬͯΕཧ͔ • ॲཧͷ༰Λఆٛͭͭ͠ɺͦΕͧΕΛ߹Ͱ͖Δ Α͏ʹ͍ͨ͠ɻͭ·ΓτϥϯβΫγϣϯΛΈཱ ͯΔλΠϛϯάͱ࣮ߦͷλΠϛϯάΛ͚͍ͨɻ • τϥϯβΫγϣϯͷ։͕࢝ඞཁͰ͋Δ͜ͱΛ໌ࣔ తɺ੩తʹදݱ͍ͨ͠ɻ • Ͱ͖Ε͍׳ΕͨI/FͰɺ؆ܿʹॻ͖͍ͨ
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ཧ: Ͳ͏ͳ͍ͬͯΕཧ͔ • ॲཧͷ༰Λఆٛͭͭ͠ɺͦΕͧΕΛ߹Ͱ͖Δ Α͏ʹ͍ͨ͠ɻͭ·ΓτϥϯβΫγϣϯΛΈཱ ͯΔλΠϛϯάͱ࣮ߦͷλΠϛϯάΛ͚͍ͨɻ • τϥϯβΫγϣϯͷ։͕࢝ඞཁͰ͋Δ͜ͱΛ໌ࣔ తɺ੩తʹදݱ͍ͨ͠ɻ • Ͱ͖Ε͍׳ΕͨI/FͰɺ؆ܿʹॻ͖͍ͨ
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ΒͲ͔͜Ͱಉ͡Α͏ͳ ͜ͱΛ͍ͬͯΔͷΛ ࣮ݟͨ͜ͱ͕͋Δ
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͜Ε͋Εͩ…
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※ۤखͳํͷͨΊʹϞβΠΫॲཧΛࢪ͍ͯ͠·͢
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ʮScalaؔܕσβΠϯ&ϓϩάϥϛϯάʯ ΑΓ
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ؔܕϓϩάϥϛϯάͷྗΛ आΓΔ
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࡞ͬͨ
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RealmIO https://github.com/ukitaka/RealmIO
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Ͳ͏࡞͔ͬͨʁ
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͜ΕΛ
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͜͏͡Ό
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͜͏͡Ό CurryԽ͢Δͱڞ௨ͷύλʔϯ͕ݟ͑Δ
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ͯ͢ͷRealmͷॲཧ͜͏දͤΔ ※ʮRealmΛड͚औͬͯԿ͔Λͯ݁͠ՌΛฦ͢ʯΈ͍ͨͳײ͡Ͱ͢ɻ ※ErrorॲཧҰ୴ߟ͑ͯ·ͤΜ
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͞Βʹ͜ΕΛ
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͜͏͡Ό
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ͭ·Γ͜ΕΛ
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͜͏͡Ό
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͜ͷܕΛϕʔεʹਐΊΔ
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͜͜·Ͱͷ·ͱΊ
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ڞ௨෦͕͋ͬͨͷͰ͜͏͚ͨͩ͠
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RealmIO
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RealmIO
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RealmIO
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RealmIO
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࣮ࡍͷίʔυͰErrorΛthrow Ͱ͖ΔΑ͏ʹͳ͍ͬͯΔ
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ͳΜͱͳ͘ runΛݺͿ·Ͱ࣮ߦ͞Εͳ͍ ײ͡ग़͖ͯͨ
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͕ɺ ·ͩͳʹղܾ͍ͯ͠ͳ͍
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ͩΕτϥϯβΫγϣϯ ։࢝ͯ͠ͳ͘Ͷʁ
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࡞Δ
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τϥϯβΫγϣϯ੍ޚ
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τϥϯβΫγϣϯ੍ޚ Realm͕RealmIOΛҾʹऔͬͯ
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τϥϯβΫγϣϯ੍ޚ τϥϯβΫγϣϯ։࢝ͯ͠
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τϥϯβΫγϣϯ੍ޚ ࣮ߦ !!!
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τϥϯβΫγϣϯ੍ޚ • ͏ͱ͖realm.run(io:) ΛݺͿΑ͏ʹ͢Δ • io.runݺͳ͍Α͏ʹɺ࣮ࡍinternal ͳΓʹ͓ͯ͘͠ɻ
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ͱ͜ΖͰRead͚ͩͷͱ͖ʁ
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τϥϯβΫγϣϯ੍ޚ • ύϑΥʔϚϯεతʹɺແବʹτϥϯβΫ γϣϯΛ։͖࢝͢Ͱͳ͍ɻ • ಡΈࠐΈͷΈͷ߹τϥϯβΫγϣϯΛ։ ࢝͠ͳ͍Α͏ʹ͢ΔͨΊʹɺॲཧ͕Readͳͷ ͔Writeͳͷ͔Λผ͢ΔΈ͕ඞཁɻ
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τϥϯβΫγϣϯ੍ޚ ܕใ͔ΒRead/Write͕ผͰ͖ͳ͍
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࡞Δ
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͜ΕΛ
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͜͏͡Ό
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͜͏͡Ό Read͔Write͔ΛܕύϥϝʔλͰද͢
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ͭ·Γ͜ΕΛ
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͜͏͡Ό
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͜͏͡Ό Read͔Write͔Λද͢ܕύϥϝʔλ
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͜͏͡Ό ฦΓͷܕΛද͢ܕύϥϝʔλ
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τϥϯβΫγϣϯ੍ޚ
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τϥϯβΫγϣϯ੍ޚ Writeͷ߹τϥϯβΫγϣϯΛ ։͔࢝ͯ͠ΒॲཧΛ࣮ߦ
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τϥϯβΫγϣϯ੍ޚ Readͷ߹τϥϯβΫγϣϯΛ ։࢝ͤͣʹॲཧΛ࣮ߦ
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Ͱ͖͖ͯͨ
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࣮ࡍʹެ։͍ͯ͠Δίʔυͱ ΄΅͓ͳ͡
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PhantomType ͪͳΈʹRWܕύϥϝʔλ PhantomType(༓ྶܕ)ͱ͍ͬͯɺRead / WriteΛද͚ͩ͢ͰɺͲͷϝιουͷγάω νϟʹݱΕͳ͍ɻ
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͜͜·Ͱͷ·ͱΊ
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flatMapͰ ߹Ͱ͖ΔΑ͏ʹ͢Δ
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͍ํΠϝʔδ
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͍ํΠϝʔδ
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ͻͱ͕ͭ͋Δ
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߹ͨ͠Β Read / Write Ͳ͏ͳΔʁ
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Read / Write
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Read / Write RWܕύϥϝʔλʹԠͯ͡ ෳͷflatMapͷ࣮͕ඞཁ
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Read / Write
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τϥϯβΫγϣϯ ͪΖΜrunͨ͠Β1ͭͷ τϥϯβΫγϣϯͰॲཧ͕ߦΘΕΔ
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ʂ
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ͪͳΈʹϥΠϒϥϦͰɺrealmͷ ϝιουͷRealmIO൛Λఏڙ
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ᘳʁ
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Ͱ͖ͳ͔ͬͨ͜ͱ • εϨουʹ͍ͭͯͳʹͰ͖ͳ͔ͬͨɻॲ ཧͷهड़ͱ࣮ߦΛ͍ͯ͠ΔͷͰɺͦͷ2ͭ ͕ผεϨουͰߦΘΕΔՄೳੑ͕͋ΔͷͰɺ ͦ͜ͷ҆શੑΛϥΠϒϥϦଆͰอূ͔ͨͬ͠ ͕ͨɺThreadSafeReferenceͷ੍ͰͰ͖ ͣɻ
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Ͱ͖ͳ͔ͬͨ͜ͱ objectΛҾड͚औΔϝιουʹ͓͍ͯɺ ݺͼग़࣌͠ͷεϨουͱ
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Ͱ͖ͳ͔ͬͨ͜ͱ realm.run(io:)Λݺͼग़͢εϨου͕ ҧ͏Մೳੑ͕͋Δɻ
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Ͱ͖ͳ͔ͬͨ͜ͱ ඞཁͳΒTSRͰҾ͖࣮͢ΛೖΕΑ͏ͱ͕ͨ͠…
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Ͱ͖ͳ͔ͬͨ͜ͱ ThreadSafeReferenceτϥϯβΫγϣϯͰ resolveͰ͖ͳ͍ͱ͍͏੍͕͋Δ
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Ͱ͖ͳ͔ͬͨ͜ͱ ͜͜τϥϯβΫγϣϯͳͷͰ resolveͰ͖ͳ͍
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Ͱ͖ͳ͔ͬͨ͜ͱ • ࣮ࡍʹେ͖ͳʹͳΔ͔ͱݴΘΕΔͱɺͦ ͜·ͰͰͳ͍(ͱߟ͍͑ͯΔ)ɻಉ͡εϨου Ͱrealm.run(io:)ΛݺͿ͔ɺobjectΛҾͰड ͚औΔϝιουflatMapͷதͰ͏Α͏ʹ͢ Εى͖ͳ͍ɻ
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Ͱ͖ͳ͔ͬͨ͜ͱ • Stack overflowͷՄೳੑ͕ͳ͘ͳ͍ɻͰͦ Μͳʹ߹͢Δ͜ͱݱ࣮తʹͳ͍ͷͰɺ ΄ͱΜͲʹͳΒͳ͍ɻ • RxSwift͕Stack overflowى͜͢ͷͱಉ͘͡Β ͍ͷϦεΫ(΄΅ͳ͍)
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Ͱ͖ͳ͔ͬͨ͜ͱ • ଞͷϞφυͱΈ߹ΘͤΔͷ(ݱࡏͷSwiftͰ )͍͠ɻྫ͑RxSwiftΛ͍ͬͯΔ߹ɺ ObservableͱRealmIOΛ͏·͘Έ߹ΘͤΔ ͷݫ͍͠ɻ • ͜Εߴ֊ଟ૬͕ͳ͍ͱݫ͍͕͠…Swiftʹ ೖΒͳͦ͞͏
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ࢀߟ • ReaderϞφυ • Slick (ScalaͷDBϥΠϒϥϦ) • ΞΠσΟΞ͜ΕͷDBIOAction͔Β • υϫϯΰൿͷτϥϯβΫγϣϯϞφυΛղઆ IUUQRJJUBDPNQBC@UFDIJUFNTFDEDGGB
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RealmIO https://github.com/ukitaka/RealmIO