ORMの選び方（Android編）

#potatotips 27 (2016/03/16) の資料です

Transcript

1. ORMͷબͼํ ~ Androidฤ ~ #potatotips 2016/03/16 @__gfx__
2. ࣗݾ঺հ • Engineer at eBook Initiative Japan • Android Engineer • Recent Works: Android ORM, Static Gson, Robolectric-Instrumentation • rebuild.fm/133 ͰAndroid Nͷ࿩Λͨ͠
4. ORM for Android • ͍·͍ͪϕετϓϥΫςΟε͕ఆ·Βͳ͍ྖҬ • ੲ͸ʮ࢖͍΍͢͞ͷActiveAndroidʯͱʮ଎౓ͷ GreenDAOʯ͘Β͍͔͠બ୒ࢶ͕ͳ͔ͬͨ • ࠓ͸΄͔ʹDBFlow, Requery, OrmaͳͲଟ਺ • NoSQLͷRealm΋ORMػೳΛ΋ͭDBͱͯ͠஫໨͞Ε ͍ͯΔ
5. ORMʹٻΊΔ΋ͷ • ଎౓: ϦϑϨΫγϣϯ͸஗͍ɻίʔυੜ੒͢΂͖ • ϚΠάϨʔγϣϯ: ϚΠάϨʔγϣϯ͕ͭΒ͍ͱ ؾܰʹ࢖͑ͳ͍ɻΧϥϜͷ௥Ճ͘Β͍ࣗಈͰ΍ͬ ͯ͘Ε • ؆୯: ੍໿Λ՝͞ͳ͍͜ͱʢe.g. ಛఆͷεʔύʔ Ϋϥε͕ඞཁʣɺίʔυิ׬ͱͷ૬ੑͷΑ͞
6. ଎౓ • AA: ϦϑϨΫγϣϯ࢖༻ɻ஗͍ • DBFlow, Orma: ίʔυੜ੒ɻ଎͍ • Realm: ಠࣗDB࣮૷ɻ଎͍ ※ ͳ͓Realm͸ߴ଎ͱ͍ΘΕΔ͕ɺOrma΍DBFlowͱ ͘Β΂Δͱʮ଎͍έʔε͕͋Δʯͱ͍͏ఔ౓
7. ϚΠάϨʔγϣϯ • खͰϚΠάϨʔγϣϯίʔυΛॻ͖ͨ͘ͳ͍ w ""
   WFSTJPOTRM
   ʹ42-Λॻ͘
   w %#'MPX
   BEE$PMVNO -POHDMBTT
   UJNFTUBNQ
   w 0SNB
   ϦωʔϜҎ֎͸ίʔυෆཁ
   w 3FBMN
   BEE'JFME JE MPOHDMBTT
8. ؆୯͞(1): Ϟσϧͷ੍໿ • ActiveAndroid΍Realm͸ModelΫϥεΛܧঝ͢Δඞཁ͕͋Γɺ JSON serializeͳͲͰϋϚΔ • AA͸উखʹprimary keyΛ͚ͭͯϋϚΔ • Orma, Requery͸੍໿ͳ͠ɺDBFlow͸ΠϯλʔϑΣΠεͷ࣮૷ ΛٻΊΔ ※ ҎલͷRelamϞσϧ͸ϝιουΛఆٛͰ͖ͳ͍ͳͲͷ੍໿͕͋ͬ ͕ͨɺv0.88Ͱ΄ͱΜͲղফ͞Εͨ
9. ؆୯͞(2): ΫΤϦϏϧμ • ίʔυίϯϓϦʔτͱͷ૬ੑΛߟ͑Δ • ""
   OFX
   4FMFDU GSPN *UFNDMBTT XIFSF OBNF
   
   
   +BDL
   • %#'MPX
   42-JUFTFMFDU GSPN *UFNDMBTT XIFSF *UFN@5BCMFOBNFFR +BDL
   • 0SNB
   PSNBTFMFDU'SPN*UFN OBNF&R +BDL
   • 3FBMN
   SFBMNXIFSF *UFNDMBTT FRVBMT OBNF
   +BDL
10. ݁࿦ • AAΛ࢖͏ཧ༝͸ͳ͍ • Orma͸·͋·͋ΠέͯΔ • DBFlow΋ͳ͔ͳ͔Α͍ɻϚΠάϨʔγϣϯ͠ͳ͍ͳ Β • Realm΋0.88͔Β͍ͩͿΑ͘ͳͬͨɻϚΠάϨʔγϣ ϯ͠ͳ͍ͳΒ
11. OrmaͷΠέͯͳ͍ͱ͜Ζ • ރΕͯͳ͍ʢ։ൃΛ͸͡Ίͯ3ϲ݄͘Β͍ʣ • ෳࡶͳΫΤϦΛߏஙͰ͖ͳ͍ • has-one, has-many, many-to-manyͳͲͷ associationsͷαϙʔτ͕ශऑ • ίʔυੜ੒ܥҰൠͷ࿩ͱͯ͠ɺίϯύΠϧΤϥʔʹ ͳͬͨͱ͖ʹؔ܎ͳ͍Τϥʔ͕େྔʹग़ͯͭΒ͍
12. ͓·͚: APK sizes • Normal App: 0.85MiB • Orma App: 0.97MB • Realm App: 5.30MB https://github.com/gfx/ORM-APK-Size-Example
13. https://github.com/gfx/Android-Orma