Realmという衝撃

テックランチ

Transcript

1. Realmͱ͍͏িܸ t-kashima
2. Realmͱ͸
6. Realmͱ͸ ϞόΠϧσόΠεͷσʔλϕʔε গͳ͍ίʔυྔͰߴ଎ʹಈ࡞͢Δ ΫϩεϓϥοτϑΥʔϜʹରԠ͍ͯ͠Δ +BWB
   0CKFDUJWF$
   4XJGU ެࣜͷαϙʔτ͕खް͍ (JUIVCɺ5XJUUFSɺP⒎DF
   IPVST
   ʜ
7. Office hours !LJTIJLBXB͞Μʹ࣭໰ʹ౴͑ͯ௖͚Δ
8. Realmͷಛ௃ σʔλ͸σʔλϕʔε΁ͷࢀরΛ࣋ͭ ݴޠͱͷ਌࿨ੑ͕ߴ͍ 044ͷͨΊ։ൃਐḿ͕֬ೝͰ͖Δ
9. Realmͷ࢖͍ํ
10. Model public class Dog extends RealmObject { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } }
11. Insert Realm realm = Realm.getInstance(getContext()); Dog dog = realm.createObject(Dog.class); dog.setName("Rex"); realm.commitTransaction();
12. Query Realm realm = Realm.getInstance(context); RealmResults<Dog> dogs = realm.where(Dog.class) .contains("name", "rex") .findAll();
13. Thread new Thread(new Runnable() { public void run() { Realm realm = Realm.getInstance(context); RealmResults<Dog> dogs = realm.where(Dog.class) .contains("name", "rex") .findAll(); } }).start();
14. Transaction Realm realm = Realm.getInstance(getContext()); Dog dog = realm.createObject(Dog.class); try { dog.setName("Rex"); realm.commitTransaction(); } catch (Exception e) { realm.cancelTransaction(); }
15. Realmͷҹ৅
16. RealmΛ࢖ͬͯخ͔ͬͨ͜͠ͱ εΩʔϚ͕ΫϥεͳͷͰ෼͔Γ΍͍͢ ΫΤϦ͕.POHP෩ʹൃߦͰ͖ͯ࢖͍΍͍͢ 3FBMNࣗମͷ։ൃ͕׆ൃͰ͋Δ ͔݄ʹ౓ͷϝδϟʔόʔδϣϯΞοϓ ໰୊͸ಛʹى͖͍ͯͳ͍
17. RealmΛ࢖ͬͯࠔͬͨ͜ͱ MJNJU΍P⒎TFU͕ͳ͍ͷͰ42-೴ͩͱͭΒ͍ 3FBMN
    #SPXTFSͰΫΤϦͷൃߦ͕Ͱ͖ͳ͍ ϚΠάϨʔγϣϯػೳ͕΄ͱΜͲͳ͍ IUUQTHJUIVCDPNSFBMNSFBMNDPDPBJTTVFT
18. RealmͷϚΠάϨʔγϣϯ
19. public class Migration implements RealmMigration { @Override public long execute(Realm realm, long version) { if (version == 0) { realm.getTable(Dog.class) .addColumn(ColumnType.INTEGER, "age"); version = 1; } return version; } } ࠷৽ʹͳΔΑ͏ͭͣͭίʔυʹॻ͍͍ͯ͘ ඪ४ͷϚΠάϨʔγϣϯ
20. ͜ΕͭΒ͘ͳ͍Ͱ͔͢ʁ
21. ͭΒ͗͢Δ…
22. ࡞Γ·ͨ͠ʂ
23. Monarch IUUQTHJUIVCDPNULBTIJNB.POBSDI
24. Monarchͱ͸ 3BJMT෩ʹϚΠάϨʔγϣϯΛߦ͑Δ ϚΠάϨʔγϣϯϑΝΠϧΛॱ൪ʹ࣮ߦ͢Δ ϚΠάϨʔγϣϯ಺༰ΛϑΝΠϧʹॻ͚Δ 3BJMT࢖ͬͨ͜ͱͳ͍͚Ͳʜ
25. public class Migration implements RealmMigration { @Override public long execute(Realm realm, long version) { if (version == 0) { realm.getTable(Dog.class) .addColumn(ColumnType.INTEGER, "age"); version = 1; } return version; } } ࠷৽ʹͳΔΑ͏ͭͣͭίʔυʹॻ͍͍ͯ͘ ඪ४ͷϚΠάϨʔγϣϯ ϑΝΠϧʹॻ͚Δ
26. Monarchͷ࢖͍ํ
27. bundle exec monarch_migration generate addColumnDog age:int { "up": [ "addcolumn Dog age:int" ] } } 1436076736_add_column_dog.json ϚΠάϨʔγϣϯϑΝΠϧͷ࡞੒
28. public class Migration implements RealmMigration { @Override public long execute(Realm realm, long version) { HashMap<String, Class> classMap = new HashMap<String, Class>() { { put("Dog", Dog.class); } }; return Monarch.migration(getContext(), realm, version, schemeVersion, classMap); } } ϚΠάϨʔγϣϯ
29. ͜ΕͰ࣮ફ΋ͭΒ͘ͳ͍
30. 3FBMN͸ϞόΠϧσʔλϕʔεͷٹੈओ ϚΠάϨʔγϣϯ΋.POBSDIͰ৐Γ੾Ε !LJTIJLBXB͞Μ࠷ߴ ·ͱΊ
31. Realm࠷ߴ