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ORMの選び方(Android編)
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FUJI Goro
March 16, 2016
Technology
2
3.8k
ORMの選び方(Android編)
#potatotips 27 (2016/03/16) の資料です
FUJI Goro
March 16, 2016
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Transcript
ORMͷબͼํ ~ Androidฤ ~ #potatotips 2016/03/16 @__gfx__
ࣗݾհ • Engineer at eBook Initiative Japan • Android Engineer
• Recent Works: Android ORM, Static Gson, Robolectric-Instrumentation • rebuild.fm/133 ͰAndroid NͷΛͨ͠
None
ORM for Android • ͍·͍ͪϕετϓϥΫςΟε͕ఆ·Βͳ͍ྖҬ • ੲʮ͍͢͞ͷActiveAndroidʯͱʮͷ GreenDAOʯ͘Β͍͔͠બࢶ͕ͳ͔ͬͨ • ࠓ΄͔ʹDBFlow,
Requery, OrmaͳͲଟ • NoSQLͷRealmORMػೳΛͭDBͱͯ͠͞Ε ͍ͯΔ
ORMʹٻΊΔͷ • : ϦϑϨΫγϣϯ͍ɻίʔυੜ͖͢ • ϚΠάϨʔγϣϯ: ϚΠάϨʔγϣϯ͕ͭΒ͍ͱ ؾܰʹ͑ͳ͍ɻΧϥϜͷՃ͘Β͍ࣗಈͰͬ ͯ͘Ε •
؆୯: ੍Λ՝͞ͳ͍͜ͱʢe.g. ಛఆͷεʔύʔ Ϋϥε͕ඞཁʣɺίʔυิͱͷ૬ੑͷΑ͞
• AA: ϦϑϨΫγϣϯ༻ɻ͍ • DBFlow, Orma: ίʔυੜɻ͍ • Realm:
ಠࣗDB࣮ɻ͍ ※ ͳ͓Realmߴͱ͍ΘΕΔ͕ɺOrmaDBFlowͱ ͘ΒΔͱʮ͍έʔε͕͋Δʯͱ͍͏ఔ
ϚΠάϨʔγϣϯ • खͰϚΠάϨʔγϣϯίʔυΛॻ͖ͨ͘ͳ͍ w ""WFSTJPOTRMʹ42-Λॻ͘ w %#'MPXBEE$PMVNO -POHDMBTT UJNFTUBNQ
w 0SNBϦωʔϜҎ֎ίʔυෆཁ w 3FBMNBEE'JFME JE MPOHDMBTT
؆୯͞(1): Ϟσϧͷ੍ • ActiveAndroidRealmModelΫϥεΛܧঝ͢Δඞཁ͕͋Γɺ JSON serializeͳͲͰϋϚΔ • AAউखʹprimary keyΛ͚ͭͯϋϚΔ •
Orma, Requery੍ͳ͠ɺDBFlowΠϯλʔϑΣΠεͷ࣮ ΛٻΊΔ ※ ҎલͷRelamϞσϧϝιουΛఆٛͰ͖ͳ͍ͳͲͷ੍͕͋ͬ ͕ͨɺv0.88Ͱ΄ͱΜͲղফ͞Εͨ
؆୯͞(2): ΫΤϦϏϧμ • ίʔυίϯϓϦʔτͱͷ૬ੑΛߟ͑Δ • ""OFX4FMFDU GSPN *UFNDMBTT XIFSF OBNF
+BDL • %#'MPX 42-JUFTFMFDU GSPN *UFNDMBTT XIFSF *UFN@5BCMFOBNFFR +BDL • 0SNBPSNBTFMFDU'SPN*UFN OBNF&R +BDL • 3FBMNSFBMNXIFSF *UFNDMBTT FRVBMT OBNF +BDL
݁ • AAΛ͏ཧ༝ͳ͍ • Orma·͋·͋ΠέͯΔ • DBFlowͳ͔ͳ͔Α͍ɻϚΠάϨʔγϣϯ͠ͳ͍ͳ Β • Realm0.88͔Β͍ͩͿΑ͘ͳͬͨɻϚΠάϨʔγϣ
ϯ͠ͳ͍ͳΒ
OrmaͷΠέͯͳ͍ͱ͜Ζ • ރΕͯͳ͍ʢ։ൃΛ͡Ίͯ3ϲ݄͘Β͍ʣ • ෳࡶͳΫΤϦΛߏஙͰ͖ͳ͍ • has-one, has-many, many-to-manyͳͲͷ associationsͷαϙʔτ͕ශऑ
• ίʔυੜܥҰൠͷͱͯ͠ɺίϯύΠϧΤϥʔʹ ͳͬͨͱ͖ʹؔͳ͍Τϥʔ͕େྔʹग़ͯͭΒ͍
͓·͚: APK sizes • Normal App: 0.85MiB • Orma App:
0.97MB • Realm App: 5.30MB https://github.com/gfx/ORM-APK-Size-Example
https://github.com/gfx/Android-Orma