Realm Japan meetup #23_Java

1. Realm meetup #23 my@realm.io
2. #realm_jp my@realm.io
3. Makoto Yamazaki Realm Inc. / uPhyca Inc. my@realm.io
4. Recent Updates my@realm.io
5. Realm Java 3.4.0 (was 3.3.1) my@realm.io
6. 3.4·Ͱόάमਖ਼(RMD) • setRequired()Ͱbyte[]ܕͷϑΟʔϧυΛnon-nullʹมߋ͢Δࡍɺbyte[0]ʹม׵͞ ΕΔ΂͖΋ͷ͕byte[1]ʹͳ͍ͬͯͨόάΛमਖ਼ • ϓϥΠϚϦΩʔʹࢦఆ͞Ε͍ͯΔϑΟʔϧυʹରͯ͠setRequired()Ͱnon-nullʹ มߋ͢ΔࡍɺnullͷϑΟʔϧυ͕ଘࡏͨ͠Βྫ֎Λεϩʔ͢ΔΑ͏ʹमਖ਼ • ೝূΤϥʔൃੜ࣌ʹΫϥογϡ͢ΔόάΛमਖ਼(#4726) • αʔόʔಉظ༗ޮ࣌Ͱ΋ɺϩʔΧϧͷσʔλϕʔεͷ҉߸ԽʹରԠ(#4561) • AdminϢʔβʔ͕αʔόʔʹ઀ଓͰ͖ͳ͍όάΛमਖ਼(#4750) • αʔόʔ઀ଓʹࣦഊͨ͠ͱ͖ʹਖ਼͘͠ϦτϥΠ͞Εͳ͍όάΛमਖ਼(#4750) my@realm.io
7. Realm Java 3.4৽ػೳ • ΫΤϦʔதͰͷٯํ޲ͷؔ࿈Λαϙʔτͱਖ਼ࣜAPI΁ͷঢ֨⭐ • ಉظͷਐḿঢ়گͷ௨஌Λड͚औΔAPIΛ௥Ճ(#4104) ⭐ • ݱࡏͷಉظঢ়ଶΛऔಘ͢ΔAPIΛ௥Ճ⭐ • Realm.getDefaultConfiguration()ͷ௥Ճ • RealmSchema.close()ͱRealmObjectSchema.close() Λ deprecated my@realm.io
8. ٯํ޲ͷؔ࿈ʹର͢ΔΫΤϦʔ my@realm.io public class Person extends RealmObject {
 public String name;
 public Dog dog;
 } 
 public class Dog extends RealmObject {
 public String name;
 public int age; @LinkingObjects("dog") public RealmResults<Person> owners;
 } Person owner; owner = realm.where(Dog.class).equalTo("owners.name", "Jane").findFirst; ͜ͷΦϒδΣΫτΛdogϑΟʔϧυ͔Β ࢀর͍ͯ͠ΔશͯͷPersonΦϒδΣΫτ ownersΛϦϯΫΫΤϦʔͰར༻Մೳ
9. ݱࡏͷಉظঢ়ଶΛऔಘ͢ΔAPI my@realm.io public enum State { WAITING_FOR_ACCESS_TOKEN, // ΞΫηετʔΫϯऔಘத ACTIVE, // ΞΫηετʔΫϯ͋Γ DYING, // ϩάΞ΢τॲཧத INACTIVE, // ϩάΠϯલɺϩάΠϯޙ ERROR // Τϥʔ } SyncSession session = SyncManager.getSession(config); SyncState state = session.getState();
10. ಉظͷਐḿΛड͚औΔϦεφʔ my@realm.io SyncSession session = SyncManager.getSession(config); showProgressBar(); session.addUploadProgressListener(ProgressMode.CURRENT_CHANGES, new ProgressListener() { @Override public void onChange(Progress progress) { if (progress.isTransferComplete()) { hideProgressBar(); session.removeProgressListener(this); } else { updateProgressBar(progress.getFractionTransferred()); } } });
11. ಉظͷਐḿΛड͚औΔϦεφʔ my@realm.io SyncSession session = SyncManager.getSession(config); session.addDownloadProgressListener(ProgressMode.INDEFINITELY, new ProgressListener() { @Override public void onChange(Progress progress) { showDownloadingChanges(!progress.isTransferComplete()); } });
12. Realm Java 4.0ʹ޲͚ͯ my@realm.io
13. master-4.0 ϒϥϯν my@realm.io • Realm Java 4.0Ͱఏڙ͞ΕΔඇޓ׵ͳมߋΛؚΉϒϥϯν • ౰໘͸ɺmaster͔Β3.x͕ɺmaster-4.0͔Β4.x͕ϦϦʔε͞ΕΔ༧ఆ • ͠͹Β͘͸̎όʔδϣϯΛฒߦͯ͠ϝϯςφϯε͍͖ͯ͠·͢ • snapshotϦϦʔε΋̎όʔδϣϯฒߦͯ͠ߦ͍·͢ • Breaking Change Wishlist for 4.0 (#4785)Ͱඇޓ׵มߋͷ༧ఆΛ؅ཧ • ͦΕͧΕͷϒϥϯνʹೖͬͨมߋ͸ɺҎԼͷΑ͏ʹࣗಈϚʔδ͞Ε·͢ releases → master → master-4.0
14. Realm Java with Kotlin my@realm.io
15. ηοτΞοϓ my@realm.io apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' // RealmͷϓϥάΠϯ͕KotlinΛೝࣝͰ͖ΔΑ͏ʹɺKotlin pluginΑΓ΋ޙͰapply apply plugin: 'realm-android' android { ... } app/build.gradle
16. Kotlinαϙʔτͱ͸ʁ • RealmͷΞϊςʔγϣϯϓϩηοαΛkapt configurationʹొ࿥ my@realm.io dependencies { annotationProcessor 'io.realm:realm-annotations-processor:3.4.0' } // ཁ͢Δʹ↑ͷ͔ΘΓʹ↓ dependencies { kapt 'io.realm:realm-annotations-processor:3.4.0' }
17. KotlinͰͷϞσϧఆٛ open class User : RealmObject() { @PrimaryKey var id: Long = 0 var name: String = "" var description: Sting? = null } Or open class User( @PrimaryKey var id: Long = 0, var name: String = "", var description: String? = null ) : RealmObject() {} my@realm.io
18. SAMม׵ͷ׆༻ realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm realm) { final Person p = realm.createObject(Person.class); p.name = "Jane"; } }); realm.executeTransaction { val person = realm.createObject(Person::class.java) person.name = "Jane" } my@realm.io Java Kotlin
19. useͰϦιʔε؅ཧ Realm.getDefaultInstance().use { it.executeTransaction { val person = realm.createObject(Person::class.java) person.name = "Jane" } } my@realm.io
20. KClass༻ͷ֦ுؔ਺Λఆٛ fun <T : RealmModel> Realm.createObject(klass : KClass<T>) : T { return this.createObject(klass.java) } realm.executeTransaction { val person = realm.createObject(Person::class) person.name = "Jane" } my@realm.io
21. KClass༻ͷ֦ுؔ਺Λఆٛ fun <T : RealmModel> Realm.where(klass : KClass<T>) : RealmQuery<T> { return this.where(klass.java) } val query = realm.where(Person::class) my@realm.io
22. KProperty༻ͷ֦ுؔ਺Λఆٛ fun <T : RealmModel> RealmQuery<T>.equalTo(property : KProperty<Int?>, value: Int) : RealmQuery<T> { return this.equalTo(property.name, value) } fun <T : RealmModel> RealmQuery<T>.equalTo(property : KProperty<String?>, value: String) : RealmQuery<T> { return this.equalTo(property.name, value) } val persons = realm.where(Person::class).equalTo(Person::age, 25) val persons = realm.where(Person::class).equalTo(Person::age, "25") // Τϥʔ my@realm.io
23. KProperty༻ͷ֦ுؔ਺Λఆٛ fun <T : RealmModel> RealmQuery<T>.group(body: RealmQuery<T>.() -> Unit) : RealmQuery<T> { beginGroup() body() return endGroup() } val persons = realm.where(Person::class) .group { equalTo(Person::age, 25).or().equalTo(Person::age, 30) } .beginsWith(Person::name, "J") my@realm.io
24. Better Kotlin support (#4701) • RealmͷKotlinαϙʔτͷͨΊͷΞΠσΟΞืू • KClass, KPropertyΛαϙʔτ͢ΔͨΊͷ֦ுؔ਺ • @NotNull, @NullableΞϊςʔγϣϯ෇༩ʹΑΔ਌࿨ੑ޲্ • Ϟσϧఆٛʹ࢖ΘΕͨඇNullܕΛ@Requiredѻ͍ʹ my@realm.io Any idea?
25. Ξϯέʔτͷճ౴Λ͓ئ͍͠·͢ jp@realm.io http://bit.ly/RealmJP_23