Realm Japan meetup Osaka #1

Realm Japan meetup Osaka

Transcript

1. Realm meetup Osaka kk@realm.io
2. #realm_jp kk@realm.io
3. Katsumi Kishikawa Realm Inc. kk@realm.io
4. What’s Realm kk@realm.io
5. What’s Realm • ϞόΠϧσόΠεઐ༻ʹ৽͘͠࡞ΒΕͨσʔλϕʔε • ϞόΠϧ༻్ʹ࠷దԽ͞Ε͍ͯΔ - ஗Ԇϩʔυ - θϩίϐʔɾΞʔΩςΫνϟ - ωΠςΟϒɾϦϯΫ • ಠࣗΤϯδϯʢSQLiteΛ࢖͍ͬͯͳ͍ʣ • Φʔϓϯιʔε jp@realm.io jp@realm.io
6. What’s Realm • ߴ଎ͳಈ࡞ • ҉߸ԽΛඪ४૷උ • ϚϧνϓϥοτϑΥʔϜ • ௚ײతͰγϯϓϧͳAPI • ஸೡͳαϙʔτʢ೔ຊޠOKʣ jp@realm.io jp@realm.io
7. Multi platform • Realm Objective-C/Swift 1.0.2 • Realm Java 1.1.1 (was 1.1.0) • Realm React Native 0.14.0 • Realm Xamarin 0.77.1 (was 0.76.0) jp@realm.io jp@realm.io
8. Realm Objective-C/Swift 1.0.2 (was 1.0.1) kk@realm.io
9. Already compatible with Swift 3 & Xcode 8 https://github.com/realm/realm-cocoa/issues/3796 kk@realm.io
10. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } class Comment: Object { dynamic var id: Int = 0 dynamic var content: String = "" dynamic var user: User? = nil } class User: Object { dynamic var id: Int = 0 dynamic var name: String = "" }
11. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } 0CKFDUך؟ـؙٓأ
12. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } 0CKFDUך؟ـؙٓأ 㛇劤涸חEZOBNJD
    WBS
13. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } ⢽㢩
    (FOFSJDTך׋׭
14. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } ؙٓأذ٦ـٕ فٗػذ؍ؕٓي
15. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } ر٦ة㘗 رؿٕؓز⦼
16. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } 㼎ךꟼ鸬
17. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() } 㼎㢳ךꟼ鸬
18. Simple API (Model definition) kk@realm.io class Article: Object { dynamic var id: Int = 0 dynamic var title: String = "" dynamic var content: String = "" dynamic var creationDate: NSDate = NSDate() dynamic var modificationDate: NSDate = NSDate() dynamic var deletionDate: NSDate? = nil dynamic var user: User? = nil let comments = List<Comment>() override class func primaryKey() -> String? { return "id" } } فٓ؎ؤؗ٦
19. Usage (Save) kk@realm.io let realm = try! Realm() let article = Article() article.title = titleTextfield.text article.contents = contentTextfield.text let currentUser = realm.objectForPrimaryKey(User.self, key: userID) article.user = currentUser try! realm.write { in realm.add(article) }
20. Usage (Save) kk@realm.io let realm = try! Realm() let article = Article() article.title = titleTextfield.text article.contents = contentTextfield.text try! realm.write { in realm.add(article) }
21. Usage (Save) kk@realm.io let realm = try! Realm() let article = Article() article.title = titleTextfield.text article.contents = contentTextfield.text try! realm.write { in realm.add(article) }
22. Usage (Save) kk@realm.io let realm = try! Realm() let article = Article() article.title = titleTextfield.text article.contents = contentTextfield.text try! realm.write { in realm.add(article) }
23. Usage (Save) kk@realm.io let realm = try! Realm() let article = Article() article.title = titleTextfield.text article.contents = contentTextfield.text realm.write { () in realm.add(article) }
24. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser = realm.objectForPrimaryKey(User.self, key: userID) let articles = realm .objects(Article) .filter("user = %@", currentUser) let article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
25. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser = realm.objectForPrimaryKey(User.self, key: userID) let articles = realm .objects(Article) .filter("user = %@", currentUser) let article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
26. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser = realm.objectForPrimaryKey(User.self, key: userID) let articles = realm .objects(Article) .filter("user = %@", currentUser) let article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
27. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser = realm.objectForPrimaryKey(User.self, key: userID) let articles = realm .objects(Article) .filter("user = %@", currentUser) let article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
28. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser: User = realm.objectForPrimaryKey(User.self, key: userID) let articles: Results<Article> = realm .objects(Article) .filter("user = %@", currentUser) let article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
29. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser: User = realm.objectForPrimaryKey(User.self, key: userID) let articles: Results<Article> = realm .objects(Article) .filter("user = %@", currentUser) let article: Article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
30. Usage (Query) kk@realm.io let realm = try! Realm() let currentUser: User = realm.objectForPrimaryKey(User.self, key: userID) let articles: Results<Article> = realm .objects(Article) .filter("user = %@", currentUser) let article: Article = articles[indexPath.row] cell.titleTextLabel.text = article.title cell.contentTextLabel.text = article.contents cell.userNameLabel.text = article.user.name
31. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) let realm = try! Realm(configuration: config)
32. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) let realm = try! Realm(configuration: config) ⥂㶷㜥䨽ؿ؋؎ٕせ
33. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) let realm = try! Realm(configuration: config) 农〾⻉
34. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) let realm = try! Realm(configuration: config) و؎ؚٖ٦ءّٝ儗חؿ؋؎ٕ⵴ꤐ
35. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) let realm = try! Realm(configuration: config) ֿךؿ؋؎ٕד⢪欽ׅ׷ذ٦ـٕ׾ꣲ㹀
36. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) Realm.Configuration.defaultConfiguration = config let realm = try! Realm()
37. Usage (RealmConfiguration) kk@realm.io let config = Realm.Configuration(fileURL: NSURL(fileURLWithPath: "..."), encryptionKey: key, deleteRealmIfMigrationNeeded: true, objectTypes: [Article.self, User.self, Comment.self]) Realm.Configuration.defaultConfiguration = config let realm = try! Realm()
38. Multi thread kk@realm.io func updateUnread(id: String) { let realm = try! Realm() guard let tweet = realm.objectForPrimaryKey(Article.self, key: id) else { return } request.performRequestWithHandler { (data, response, error) in if let error = error { return } ... try! realm.write { tweet.unread = false } } }
39. Multi thread kk@realm.io func updateUnread(id: String) { let realm = try! Realm() guard let tweet = realm.objectForPrimaryKey(Article.self, key: id) else { return } request.performRequestWithHandler { (data, response, error) in if let error = error { return } ... try! realm.write { tweet.unread = false } } }
40. Multi thread kk@realm.io func updateUnread(id: String) { let realm = try! Realm() guard let tweet = realm.objectForPrimaryKey(Article.self, key: id) else { return } request.performRequestWithHandler { (data, response, error) -> Void in if let error = error { return } let realm = try! Realm() if let tweet = realm.objectForPrimaryKey(Tweet.self, key: id) { try! realm.write { tweet.favorited = !tweet.favorited } } } }
41. Multi thread kk@realm.io func updateUnread(id: String) { let realm = try! Realm() guard let tweet = realm.objectForPrimaryKey(Article.self, key: id) else { return } request.performRequestWithHandler { (data, response, error) -> Void in if let error = error { return } let realm = try! Realm() if let tweet = realm.objectForPrimaryKey(Tweet.self, key: id) { try! realm.write { tweet.favorited = !tweet.favorited } } } }
42. Best practice kk@realm.io var timeline: Results<Article>? var notificationToken: NotificationToken? override func viewDidLoad() { super.viewDidLoad() ... let realm = try! Realm() timeline = realm.objects(Article.self) .sorted("creationDate", ascending: false) notificationToken = timeline?.addNotificationBlock { [weak self] (results, error) in if let _ = error { return } self?.tableView.reloadData() } } override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return timeline?.count ?? 0 } func getTimeline() { ... request.performRequestWithHandler { (data, response, error) -> Void in if let error = error { self.showAlert(error.localizedDescription) return } let articles = try NSJSONSerialization.JSONObjectWithData(data, options: []) let realm = try! Realm() try! realm.write { articles.forEach { (article) -> () in ... realm.add(article, update: true) } } } }
43. Best practice kk@realm.io var timeline: Results<Article>? var notificationToken: NotificationToken? override func viewDidLoad() { super.viewDidLoad() ... let realm = try! Realm() timeline = realm.objects(Article.self) .sorted("creationDate", ascending: false) notificationToken = timeline?.addNotificationBlock { [weak self] (results, error) in if let _ = error { return } self?.tableView.reloadData() } }
44. Best practice kk@realm.io func getTimeline() { ... request.performRequestWithHandler { (data, response, error) -> Void in if let error = error { self.showAlert(error.localizedDescription) return } let articles = try NSJSONSerialization.JSONObjectWithData(data, options: []) let realm = try! Realm() try! realm.write { articles.forEach { (article) -> () in ... realm.add(article, update: true) } } } }
45. Best practice kk@realm.io func getTimeline() { ... request.performRequestWithHandler { (data, response, error) -> Void in if let error = error { self.showAlert(error.localizedDescription) return } let articles = try NSJSONSerialization.JSONObjectWithData(data, options: []) let realm = try! Realm() try! realm.write { articles.forEach { (article) -> () in ... realm.add(article, update: true) } } } } فٓ؎ؤؗ٦׾ⵃ欽׃ג
    鷄⸇،حفر٦ز
    傀㶷ך3FTVMUTכ荈⹛涸ח
    剑倜ךⰻ㺁ח刿倜ׁ׸׷
46. Migration Tips kk@realm.io let config = Realm.Configuration(schemaVersion: 1, migrationBlock: { (migration, oldSchemaVersion) in migration.enumerate("") { (oldObject, newObject) in ... } }) Realm.Configuration.defaultConfiguration = config let realm = try! Realm()
47. Migration Tips kk@realm.io let config = Realm.Configuration(schemaVersion: 1, migrationBlock: { (migration, oldSchemaVersion) in migration.enumerate("") { (oldObject, newObject) in ... } }) Realm.Configuration.defaultConfiguration = config let realm = try! Realm()
48. Migration Tips kk@realm.io let config = Realm.Configuration(schemaVersion: 1) Realm.Configuration.defaultConfiguration = config let realm = try! Realm()
49. Migration Tips kk@realm.io class User: Object { dynamic var id = 0 dynamic var name = "" } class User: Object { dynamic var id = 0 dynamic var name = "" dynamic var age 0 }
50. Migration Tips kk@realm.io class User: Object { dynamic var id = 0 dynamic var firstname = "" dynamic var lastname = "" } class User: Object { dynamic var id = 0 dynamic var fullname = "" }
51. Advanced Tips kk@realm.io • List<T> is ordered
52. List<T> is ordered kk@realm.io class Data: Object { dynamic var name = "" ... dynamic var order = 0 // ฒ΂ସ͑ͷͨΊͷΧϥϜ͕ඞཁ }
53. List<T> is ordered kk@realm.io override func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) { try! realm.write { let sourceObject = objects[sourceIndexPath.row] let destinationObject = objects[destinationIndexPath.row] let destinationObjectOrder = destinationObject.order if sourceIndexPath.row < destinationIndexPath.row { // ্͔ΒԼʹҠಈͨ͠৔߹ɺؒͷ߲໨Λ্ʹγϑτ for index in sourceIndexPath.row...destinationIndexPath.row { let object = objects[index] object.order -= 1 } } else { // Լ͔Β্ʹҠಈͨ͠৔߹ɺؒͷ߲໨ΛԼʹγϑτ for index in (destinationIndexPath.row..<sourceIndexPath.row).reverse() { let object = objects[index] object.order += 1 } } ɹɹɹɹɹɹɹɹ// Ҡಈͨ͠ηϧͷฒͼΛҠಈઌʹߋ৽ sourceObject.order = destinationObjectOrder } }
54. List<T> is ordered kk@realm.io class Article: Object { dynamic var name = "" ... dynamic var order = 0 // ฒ΂ସ͑ͷͨΊͷΧϥϜ͕ඞཁ }
55. List<T> is ordered kk@realm.io override func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) { try! realm.write { let sourceObject = objects[sourceIndexPath.row] let destinationObject = objects[destinationIndexPath.row] let destinationObjectOrder = destinationObject.order if sourceIndexPath.row < destinationIndexPath.row { // ্͔ΒԼʹҠಈͨ͠৔߹ɺؒͷ߲໨Λ্ʹγϑτ for index in sourceIndexPath.row...destinationIndexPath.row { let object = objects[index] object.order -= 1 } } else { // Լ͔Β্ʹҠಈͨ͠৔߹ɺؒͷ߲໨ΛԼʹγϑτ for index in (destinationIndexPath.row..<sourceIndexPath.row).reverse() { let object = objects[index] object.order += 1 } } ɹɹɹɹɹɹɹɹ// Ҡಈͨ͠ηϧͷฒͼΛҠಈઌʹߋ৽ sourceObject.order = destinationObjectOrder } }
56. List<T> is ordered kk@realm.io class ArticlesWrapper: Object { let articles = List<Article> }
57. List<T> is ordered kk@realm.io override func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) { try! realm.write { let sourceObject = objects[sourceIndexPath.row] objects.removeAtIndex(sourceIndexPath.row) objects.insert(sourceObject, atIndex: destinationIndexPath.row) } }
58. List<T> is ordered kk@realm.io class Category: Object { dynamic var name = "" let articles = List<Article> }
59. Where to find us • " Realm Japan User Group: facebook.com/groups/realmjp • " Twitter: twitter.com/realmJapan • GitHub: github.com/realm • " StackOverflow: ja.stackoverflow.com/questions/tagged/realm • " Email: help@realm.io • " Slack: slack.realm.io/ jp@realm.io kk@realm.io
60. Realm Japan User Group Facebook kk@realm.io
61. Support Chat Slack kk@realm.io
62. Ξϯέʔτ bit.ly/RealmJP_Kansai kk@realm.io
63. Questions? Katsuma Kishikawa kk@realm.io www.realm.io/jp @k_katsumi