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オフラインファーストなアプリケーション開発
zaki50
March 09, 2017
Technology
1
2k
オフラインファーストなアプリケーション開発
DroidKaigi 2017 Day1
16:00-16:50 Room 3
zaki50
March 09, 2017
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Transcript
my@realm.io ΦϑϥΠϯϑΝʔετ ΞϓϦέʔγϣϯ։ൃ 2017/3/9 Droid Kaigi 2017 16:00- Room3 Makoto
Yamazaki (@zaki50)
my@realm.io Makoto Yamazaki Realm / uPhyca Inc. @zaki50
my@realm.io agenda ΦϑϥΠϯϑΝʔετͱ ΦϑϥΠϯϑΝʔετͰͷٕज़త՝ Realmతղܾࡦ σϞ ·ͱΊ
my@realm.io ΦϑϥΠϯϑΝʔ ετʁ
my@realm.io ΦϑϥΠϯϑΝʔετ ݩʑWebͰͷߟ͑ํ ࠷ॳ͔ΒΦϑϥΠϯͰͷಈ࡞Λߟ͑ͨWebαʔϏε ϒϥβ͕ϩʔΧϧʹετϨʔδΛ࣋ͯΔΑ͏ʹͳͬ ͨ
my@realm.io ϞόΠϧ Billions of Minutes Online (USA) 0 250 500
750 1000 1250 1500 Jun 2013 Jun 2014 Jun 2015 Desktop Mobile App Mobile Browser
my@realm.io ϞόΠϧͰͷΦϑϥΠϯϑΝʔετ αʔϏεΛޭͤ͞ΔͨΊʹྑ͍ΞϓϦ͕ඞཁ ΦϑϥΠϯͰͷར༻ίΞػೳ ར༻ऀΦϑϥΠϯͰ͑Δ͜ͱΛͨΓલͱࢥ͍࢝ Ίͨ
my@realm.io ඞཁͳػೳ αʔόʔͱͷ௨৴ ΦϑϥΠϯ࣌ͷͨΊͷετϨʔδʗσʔλϕʔε ΦϯϥΠϯʹͳͬͨ࣌ͷσʔλಉظ ͜ΕΒ͕ࣗવͳܗͰΞϓϦͷػೳʹΈࠐ·Ε͍ͯΔ͜ͱ
my@realm.io ௨৴෦ͷ՝ Java, React Native, Xamarin σʔλϕʔε ௨৴ʗσʔλಉظػೳ Android
my@realm.io ௨৴ͷ՝
my@realm.io σʔλϕʔεͷ՝ ΦϑϥΠϯ࣌༻ͷϩδοΫΛผ్࣮͢ Δ͜ͱ͕ඞཁ ΦϯϥΠϯ࣌: αʔόʔ͔Βऔಘ(ͱอଘ) ΦϑϥΠϯ࣌: σʔλϕʔε͔Βऔಘ
my@realm.io ಉظͷ՝ ࠷৽ใͷऔಘλΠϛϯά ΦϯϥΠϯʹͳͬͨΒࡍͷΞοϓϩʔυ ෳͰͷมߋͷ౷߹ ਖ਼ͱ͍ͯ͠
my@realm.io Realm Mobile Platform͕ղܾ͠·͢
my@realm.io Realm Mobile Platform ෳσόΠεͷσʔλϕʔεΛϦΞϧλΠϜಉظ ΦϑϥΠϯͰϩʔΧϧͷσʔλϕʔε͕͑Δ ΦϑϥΠϯ࣌ͷมߋিಥΛࣗಈղܾ SD SD SD
SDK SD Object Store Sync Server RMP Dashboar d Event Auth System Encryption Layer Rules Engine Data Connect ors Real-time Sync
my@realm.io RMPͰͷ௨৴ߏ Java, React Native, Xamarin σʔλϕʔε ௨৴ʗσʔλಉظػೳ Android
my@realm.io ୯ͳΔಉظҎ্ͷ͍ํ
my@realm.io Realm Mobile Database
Ϟσϧͷఆٛ my@realm.io public class Task extends RealmObject { @PrimaryKey public
String id = UUID.randomUUID().toString(); @Required public Date createdAt = new Date(); public String text; public boolean completed; }
RealmΠϯελϯεͷऔಘ my@realm.io Realm realm = Realm.getDefaultInstance(); // 様々な機能へアクセスするための入り口。 // データベースコネクションと捉えることも可能。
... // 終わったら忘れずに閉じる realm.close();
σʔλͷૠೖ my@realm.io final Task task = new Task(); task.text =
"原稿を書く"; realm.executeTransactionAsync(new Realm.Transaction() { @Override public void execute(Realm realm) { realm.insert(task); } });
σʔλͷݕࡧͱͷΞΫηε my@realm.io final RealmResults<Task> completedTasks = realm.where(Task.class) .equalTo("completed", true) .findAll();
for (Task completedTask : completedTasks) { Log.d("debug", completedTask.text); }
σʔλͷߋ৽ my@realm.io RealmResults<Task> allTasks = realm.where(Task.class) .findAllSorted("createdAt"); // たとえばリストで position
== 5 の要素がタップされた時 final Task task = allTasks.get(5); realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm realm) { task.completed = true; } });
σʔλͷআ my@realm.io RealmResults<Task> allTasks = realm.where(Task.class) .findAllSorted("createdAt"); // たとえばリストで position
== 5 の要素がスワイプされた時 final Task task = allTasks.get(5); realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm realm) { task.deleteFromRealm(); } });
มߋ௨ my@realm.io completedTasks.addChangeListener( new OrderedRealmCollectionChangeListener<RealmResults<Task>>() { @Override public void onChange(RealmResults<Task>
tasks, OrderedCollectionChangeSet changeSet) { // changeSetから、追加/削除/更新があった要素を取得 可能 } });
Realmͷ͍ํ·ͱΊ my@realm.io • Ϋϥεͱͯ͠ϞσϧΛఆٛ͢Δ • RealmΠϯελϯεΛऔಘ͢Δ • τϥϯβΫγϣϯͷதͰՃߋ৽Λߦ͏ • ݕࡧΛߦ͍ɺදࣔʹඞཁͳΦϒδΣΫτΛRealmResultsݸผͷ
ϞσϧΦϒδΣΫτͱͯ͠औಘ͢Δ • RealmResultsϞσϧΦϒδΣΫτʹηοτͨ͠ϦεφʔͰ࠷৽ ͷใΛड͚औΓදࣔ͢Δ
ͦͷଞͷಛ my@realm.io • ߴ • Ԇϩʔυ • σʔλϕʔε҉߸Խ • ΫϩεϓϥοτϑΥʔϜ(Android,
iOS) • etc.
ηοτΞοϓ my@realm.io // in build.gradle buildscript { repositories { jcenter()
} dependencies { classpath "io.realm:realm-gradle-plugin:3.0.0" } } // in app/build.gradle apply plugin: 'realm-android'
my@realm.io σʔλಉظͷࣗવͳ֦ு
σʔλͷߋ৽ my@realm.io RealmResults<Task> allTasks = realm.where(Task.class) .findAllSorted("createdAt"); // たとえばリストで position
== 5 の要素がタップされた時 final Task task = allTasks.get(5); realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm realm) { task.completed = true; } });
มߋ௨ my@realm.io completedTasks.addChangeListener( new OrderedRealmCollectionChangeListener<RealmResults<Task>>() { @Override public void onChange(RealmResults<Task>
tasks, OrderedCollectionChangeSet changeSet) { // changeSetから、追加/削除/更新があった要素を取得可能 } });
σʔλͷߋ৽ my@realm.io Server-side Realms completed = true; completed = true;
onChange()
ϩάΠϯ my@realm.io // 認証 SyncCredentials credential = SyncCredentials.usernamePassword(email, password, false);
SyncUser user = SyncUser.login(credential, RealmTasksApplication.AUTH_URL); SyncConfiguration defaultConfig = new SyncConfiguration.Builder(user, RealmTasksApplication.REALM_URL) .build(); Realm.setDefaultConfiguration(defaultConfig);
my@realm.io Demo
my@realm.io িಥղܾ
ඪ४ͷղܾϧʔϧ my@realm.io আৗʹ༏ઌ͞ΕΔ ಉ͡ϓϩύςΟͷฤूޙউͪ Ϧετͷૠೖ࣌ؒॱ Operational TransformʹΑΓɺ֤ʹదͳ มߋηοτ͕͞ΕΔ
my@realm.io CAPఆཧ ConsistencyʢҰ؏ੑʣ AvailabilityʢՄ༻ੑʣ Partition Toleranceʢஅੑʣ ̎ͭ·Ͱ͔͠ಉ࣌ʹຬͨ͢͜ͱ͕Ͱ͖ͳ͍
my@realm.io CAPఆཧ ConsistencyʢҰ؏ੑʣ AvailabilityʢՄ༻ੑʣ Partition Toleranceʢஅੑʣ ҰൠతͳRDB
my@realm.io CAPఆཧ ConsistencyʢҰ؏ੑʣ AvailabilityʢՄ༻ੑʣ Partition Toleranceʢஅੑʣ Apache HBaseɺMongoDB
my@realm.io CAPఆཧ ConsistencyʢҰ؏ੑʣ AvailabilityʢՄ༻ੑʣ Partition Toleranceʢஅੑʣ DNSͳͲɻRealm Mobile Platform͜Ε
my@realm.io Eventual Consistency Strong Eventual Consistency Strong Consistency Ұ؏ੑ
my@realm.io ·ͱΊ
my@realm.io ௨৴ͷ σʔλϕʔεͷ ಉظͷ ͍͜͠ͱRMPʹ·͔ͤΑ͏
ࢀߟใ my@realm.io realm.io