Realm を正しく使うには

Android で Realm を使う際の気をつける点とかを共有@ #realm_jp

Transcript

1. 3FBMNΛ
   ਖ਼͘͠࢖͏ʹ͸
   
   "OESPJE
   ฤ !OVNB
   
   
   SFBMN@KQ
2. !OVNB  IUUQOVNBIBUFCMPKQ
3. DPWFMMJOF --$  GFBUIFS
   ܰշͳUXJUUFSΫϥΠΞϯτ
4. 3FBMN
   Λਖ਼͘͠࢖͏ʹ͸  3FBMN
   ͸ߴ଎ͳ%#.4Ͱ͋Δ 3FBMN
   ͸ଞͷ%#.4ͱൺֱͯ͠ѹ౗తʹߴ଎Ͱ͋Δɻ
   ͔͠͠ɺଞͷ%#.4ʹ͸ແ੍͍໿΍஫ҙ఺͕͋Δɻ
   εϨουؒ௨৴ɺίϯϙʔωϯτؒ௨৴ɺςετFUDʜ "OESPJE
   Ͱ
   3FBMNΛ࢖ͬͨ࿩ͷ঺հ UXJUUFSΫϥΠΞϯτ
   GFBUIFS
   Ͱ
   3FBMN
   Λ࢖ͬͨɻ
   πΠʔτͷಡΈࠐΈɺදࣔؔ࿈ʹ͍ͭͯϋϚͬͨ఺Λ঺հɻ
5. ΞδΣϯμ  ઃܭ w ࠓͷઃܭ
   w ੲͷઃܭ
   w ੲͷઃܭͷࣦഊ఺ ςετ w ςετͷ
   5JQT
6. ࠓͷઃܭ 
7. ੲͷઃܭ 
8. πΠʔτͷ؅ཧΦϒδΣΫτ  ࠓ ੲ class Tweet extends RealmObject { String text; Date createAt; String userName; public Tweet(){} public Tweet(String text, Date createAt, String userName) { this.text = text; this.createAt = createAt; this.userName = userName; } } class Tweet implements Content { String text; Date createAt; String userName; // RealmTweet extends RealmObject public Tweet(RealmTweet obj){ this.text = obj.getText(); this.createAt = obj.getCreateAt(); this.userName = obj.getUserName(); } }
9. ੲͷઃܭ  ޓ׵ੑ͕ཉ͔ͬͨ͠ 3FBMN
   Ҏ֎ͷ%#.4΍03.ͷ࠾༻΋ݕ౼͍ͯͨ͠ɻ
   ͍ͭͰ΋৐Γ׵͑ΒΕΔΑ͏ʹɺޓ׵ੑΛҙ͍ࣝͯͨ͠ɻ
10. ੲͷઃܭͷμϝͳ఺  ϝϞϦ࢖͍͗͢໰୊ ͔ͳΓେྔͷΦϒδΣΫτΛϝϞϦ্ʹల։͢ΔͷͰɺ
    ޻෉͕ٻΊΒΕͨɻ 3FBMN
    ͷϝϦοτΛ׆͔ͤͯͳ͍໰୊ ಠࣗΦϒδΣΫτͷల։ʹΑͬͯɺಈ࡞͕஗͘ͳͬͨɻ
    ஗Ԇϩʔυ΍($Λར༻͠ͳ͍ͷͰɺແҙຯͳϝϞϦফඅʹܨ͕ͬͨɻ ޓ׵ੑΛࣺͯͯ
    3FBMN
    Λ࢖͏ํࣜʹํ޲స׵
11. εϨουؒ௨৴  ੲ ࠓ ಡΈࠐΈ όοΫάϥ΢ϯυͰ࣮ߦ ॻ͖ࠐΈ όοΫάϥ΢ϯυͰ࣮ߦ εϨουؒ௨৴ ಠࣗΦϒδΣΫτʹల։ ಡΈࠐΈ 6*εϨουͰ࣮ߦ ॻ͖ࠐΈ όοΫάϥ΢ϯυͰ࣮ߦ εϨουؒ௨৴ ࣝผࢠɺΫΤϦΛ΍ΓͱΓɻ
    ࣍ͷεϨουͰΫΤϦΛ࣮ߦɻ
12. ίϯϙʔωϯτؒ௨৴  ੲ ࠓ ίϯϙʔωϯτؒ௨৴ ಠࣗͷ
    1BSDFMBCMF
    ͳΦϒδΣΫτʹ
    ల։ ίϯϙʔωϯτؒ௨৴ ࣝผࢠɺΫΤϦΛ΍ΓͱΓɻ
    ࣍ͷίϯϙʔωϯτͰΫΤϦ࣮ߦɻ
13. ςετͷ࿩  ઃܭ w +7.Ͱ͸ςετ͕Ͱ͖ͳ͍
    w ϑΝΠϧ࡟আ࣌ͷ஫ҙࣄ߲
    w 6*εϨουςετͷ஫ҙࣄ߲ εϨουؒ௨৴ɺίϯϙʔωϯτؒ௨৴ͷ੍ݶ΋͋ͬͯɺςετ࣮ߦ΋஫ҙ͕ඞཁ
    ͱͳΔɻ
14. ςετͷ࿩  +7.্Ͱ͸ςετ͕Ͱ͖ͳ͍ +7.্ͷςετͰ͸ωΟςΟϒϥΠϒϥϦ͕ಡΈࠐΊͳ͍ͷͰɺ
    3FBMN
    Πϯελϯ ε΁ΞΫηεͰ͖ͳ͍ɻ
    *OTUSVNFOUBUJPO
    5FTU
    Ͱ͋Δඞཁ͕͋Δɻ ิ଍ɹ 3FBMN0CKFDU
    ͷαϒΫϥεΛΠϯελϯεԽ͢Δͷ͸ɺ+7.্Ͱ΋Մೳɻ
    ίϯετϥΫλͷςετ΍ɺ3FBMN
    ΁ͷಡΈॻ͖ͷແ͍ςετͳΒେৎ෉ɻ
15. ςετͷ࿩  ϑΝΠϧ࡟আ࣌ͷ஫ҙࣄ߲ 3FBMN
    ͷ%#ϑΝΠϧ͸શͯͷίωΫγϣϯ͕
    DMPTF
    ͞Ε͍ͯͳ͍ͱ࡟আͰ͖ͣɺ
    ྫ֎͕ඈͿɻ
    !"GUFS
    Ͱ࡟আΛ͢Δ৔߹ʹɺ࣮֬ʹ
    DMPTF
    ͕ݺ͹ΕΔΑ͏ʹ͢Δඞཁ͕͋Δɻ
    
    ςετʹࣦഊͯ͠
    DMPTF
    ͠๨Εͯ
    !"GUFS
    ͕ݺ͹ΕΔͱྫ֎͕ݟ೉͘ͳΔɻ w ςετϝιουͰUSZpOBMMZ USZXJUISFTPVSDFT Λ࢖ͬͯ
    DMPTF
    ͢Δ
    w !"GUFS
    Ͱ
    DMPTF
    ͔ͯ͠Β࡟আΛ͢Δ
16. ςετͷ࿩  !6*5ISFBE5FTU
    ͷ஫ҙ఺ !6*5ISFBE5FTU
    ͸
    !#FGPSF !"GUFS
    ͱ͸ҧ͏εϨουͰ࣮ߦ͞ΕΔɻ
    ͦͷͨΊɺ
    3FBMN
    ΠϯελϯεͳͲ͸ɺ
    ςετϝιου಺Ͱ༻ҙɺ
    ࡟আ͢Δඞཁ͕͋Δɻ