CleanArchitecture × Strategyパターンで挑む爆速開発

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CleanArchitecture × Strategyύλʔϯ Ͱ௅Ήര଎։ൃ Tech Lead / Android Engineer @SataKentaro (Ωϟϯϓͷ͑Μ͡ʹ͋)

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PROFILE AndroidΤϯδχΞ — FiNC Technologiesʹॴଐ — ίϛϡχςΟʔػೳΛ։ൃ͢ΔνʔϜͷTL — DroidKaigi2019ͰʮϚςϦΞϧσβΠϯͷىݯͱϕʔεͱͳΔ఩ֶʯͱ͍ ͏λΠτϧͰొஃ Ωϟϯύʔ — ฏۉ͢ΔͱҰ݄ʹ1ճҎ্͸ςϯτੜ׆ — ݱࡏ͸ݐஙՈͷ༑ਓͱςϯτΛσβΠϯத (https://twitter.com/ SataKentaro) ݐங — ֶੜ࣌୅͸ݐஙσβΠϯΛઐ߈ Kentaro Sata (Ωϟϯϓͷ͑Μ͡ʹ͋) AndroidΤϯδχΞ / Ωϟϯύʔ / ݐங

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$MFBO"SDIJUFDUVSFΛಋೖͯ͠Έͨ࿩ $MFBO"SDIJUFDUVSFͰ͸ղܾͰ͖ͳ͍෦෼͕ग़͖ͯͨ࿩ 4USBUFHZύλʔϯΛ࢖͏ͱ͏·͘ղܾͰ͖ͨ࿩ "HFOEB ͜ͷύλʔϯʹ࢒Δ՝୊ͷ࿩

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CleanArchitectureΛಋೖͯ͠Έͨ࿩ tried to use Clean Architecture - 01 -

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6*ͱ%BUBͷґଘʹΑΔϝϯςφϯεੑͷѱ͞ ໌֬ͳઃܭࢦ਑ෆ଍ʹ൐͏ίϛϡχέʔγϣϯίετͷ૿େ ઃܭͷଐਓԽ $MFBO"SDIJUFDUVSFಋೖલͷ՝୊

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6*ͱ%BUBͷґଘʹΑΔϝϯςφϯεੑͷѱ͞ ໌֬ͳઃܭࢦ਑ෆ଍ʹ൐͏ίϛϡχέʔγϣϯίετͷ૿େ ઃܭͷଐਓԽ $MFBO"SDIJUFDUVSFಋೖલͷ՝୊ ։ൃલͷٞ࿦૿େɻ։ൃεϐʔυരԼ͕Γ

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ٞ࿦ΛݮΒͯ͠։ൃεϐʔυΛ্͍͛ͨ

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ےτϨͰղܾ͠Α͏͔ ࢀরݩIUUQTBNFCMPKQCBEBTTDFP

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͍΍ɺ΋ͬͱ͍͍ͷ͕͋Δʂ ࢀরݩIUUQTCMPHDMFBODPEFSDPNVODMFCPCUIFDMFBOBSDIJUFDUVSFIUNM

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6TF$BTF 3FQPTJUPSZ %BUB4UPSF 7JFX 7JFX.PEFM 6* %PNBJO %BUB 1SFTFOUFS ૚ʹ෼͚ͨ

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ઃܭํ਑͕໌֬ʹͳΓνʔϜͰͷٞ࿦͕ݮͬͨ ݸਓͷϨϕϧࠩʹΑΔ৺഑͕͔ͳΓݮͬͯϨϏϡʔίετ  ɹ͕Լ͕ͬͨ 6*ͱ%BUBͷґଘΛണ͕ͤͯ%BUB૚ͷมߋʹڧ͘ͳͬͯ  ɹαʔόʔͱͷ"1*ઃܭٞ࿦͕ݮͬͨ

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CleanArchitectureͰ͸ղܾͰ͖ͳ͍෦෼͕ग़͖ͯͨ࿩ What the Clean Architecture didn’t solve - 02 -

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(SPVQνϟοτͱ%JSFDUνϟοτΛผϦιʔεͱͯ͠ѻ͏ 6*͸(SPVQνϟοτͱ͔%JSFDUνϟοτؔ܎ͳ͘ҰͭͰ ͱ͋Δνϟοτͷ࡞Γ௚͠։ൃ

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%BUB4UPSF 3FQPTJUPSZ (SPVQ$IBU3FNPUF%BUB4UPSF (SPVQ$IBU3FQPTJUPSZ 6TFS$IBU3FQPTJUPSZ 6TF$BTF $IBU3PPN6TF$BTF (SPVQ$IBU-PDBM%BUB4UPSF 6TFS$IBU3FNPUF%BUB4UPSF 6TFS$IBU-PDBM%BUB4UPSF 6* %BUB ͜Μͳײ͡ʹ։ൃ͠Α͏ͱࢥͬͨ

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͢Έ·ͤΜɻҰͭ໧͍ͬͯͨ͜ͱ͕͋Γ·͢ɻ

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͢Έ·ͤΜɻҰͭ໧͍ͬͯͨ͜ͱ͕͋Γ·͢ɻ (SPVQνϟοτͱ%JSFDUνϟοτΛผϦιʔεͱͯ͠ѻ͏ 6*͸(SPVQνϟοτͱ͔%JSFDUνϟοτؔ܎ͳ͘ҰͭͰ αʔόʔଆͰνϟοτ͸΋ͷ͘͢͝৭Μͳ֓೦Ͱࡉ͔͘  ɹϦιʔε͕෼͔Ε͍ͯ·͢ɻɻɻ

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֓೦ͷύλʔϯ͸͜Μͳײ͡

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Ͱ΋νϟοτ3PPNͷϦιʔεΛҰ୴औಘͯ͠͠·͑͹ ΫϥΠΞϯτͱͯ͠දݱ͢΂͖֓೦͸͜Ε͚ͩ

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ͳʹ΍Β$BTFจ·ΈΕͷ6TF$BTFʹ

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͔͠΋3PPNऔಘͷϝιουͱ3PPNऔಘޙʹ࢖͏ ϝιουͰ$BTFจͷύλʔϯ͕ҧ͏

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StrategyύλʔϯΛ࢖͏ͱ͏·͘ղܾͰ͖ͨ࿩ solved this with Strategy Pattern - 03 -

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ඞཁͳͷ͸૚͚ͩͱ͸ݶΒͳ͍

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ࠓճղܾ͍ͨ͜͠ͱ

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ےτϨͰղܾ͠Α͏͔ ࢀরݩIUUQTBNFCMPKQCBEBTTDFP

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͍΍ɺ΋ͬͱ͍͍ͷ͕͋Δʂ ࢀরݩIUUQTXXXUFDITDPSFDPNUFDI%FTJHO1BUUFSO4USBUFHZIUNM

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σʔλΛॳظऔಘ͢Δ࣌ʹ࢖͏3FQPTJUPSZͱϝιου σʔλऔಘޙʹ࢖͏3FQPTPUSZͱϝιου ։͍ͨͱ͖ʹ࣍ͷ̎ͭͷ૊Έ߹ΘͤΛܾఆ͍ͨ͠

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σʔλΛॳظऔಘ͢Δ࣌ʹ࢖͏3FQPTJUPSZͱϝιου σʔλऔಘޙʹ࢖͏3FQPTPUSZͱϝιου ඞཁͳ4USBUFHZ͸̎ͭ 0QFO$IBU3PPN4USBUFHZ 0QFOFE$IBU3PPN4USBUFHZ

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औಘʹ࢖͏*%ͷछྨͱ3FQPTJUPSZͱϝιουΛࢦఆͯ͠ 0QFO$IBU3PPN4USBUFHZ

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औಘޙʹ࢖͏ಛఆͷ0QFOFE$IBU3PPN4USBUFHZΛࢦఆ͢Δ 0QFO$IBU3PPN4USBUFHZ

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͋ͱ͸֤$BTFͷύλʔϯΛ4USBUFHZʹஔ͖׵͑Δ͚ͩ 0QFO$IBU3PPN4USBUFHZ 0QFO6TFS$IBU3PPN4USBUFHZ 0QFO"ENJO$IBU3PPN4USBUFHZ 0QFO0GGJDJBM"DDPVOU$IBU3PPN4USBUFHZ 0QFO(SPVQ$IBU3PPN4USBUFHZ $SFBUF6TFS$IBU3PPN4USBUFHZ $SFBUF"ENJO$IBU3PPN4USBUFHZ ʜ 0QFOFE$IBU3PPN4USBUFHZ 0QFOFE6TFS$IBU3PPN4USBUFHZ 0QFOFE"ENJO$IBU3PPN4USBUFHZ 0QFOFE0GGJDJBM"DDPVOU$IBU3PPN4USBUFHZ 0QFOFE(SPVQ$IBU3PPN4USBUFHZ

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εοΩϦ

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͜ͷύλʔϯʹ࢒Δ՝୊ͷ࿩ What even Strategy Pattern doesn’t solve - 04 -

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%*ͣ͠Β͍ʂʂʂ

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౰વ6TF$BTF4USBUFHZͰ͸ͳ͍ͷͰ %BHHFSͱ͔ͷ%*ίϯςφͰͷࢦఆํ๏Λ͏·͘ݟ͚ͭΒΕͯͳ͍