Slide 4
Slide 4 text
Recent Updates
• Realm Objective-C/Swift 1.0.2 (was 1.0.1)
• Realm Java 1.1.0 (was 1.0.1)
• Realm React Native 0.14.0 (was 0.13.0)
• Realm Xamarin 0.76.0
[email protected]
[email protected]
Slide 6
Slide 6 text
Realm Objective-C/Swift 1.0.2
• ϓϩύςΟ͕ଘࡏ͠ͳ͍ΫϥεΛอଘ͠Α͏ͱ͢Δͱྫ֎ʹ
• write(_:)ϝιουͷϒϩοΫͰthrowͰ͖ΔΑ͏ʹ
• όΠφϦαΠζ͕গ͠ݮগ
• addNotificationBlock(_:, change:)Ͱॳճͷݺͼग़͠ඞ
ͣ.Initial͕ݺΕΔΑ͏ʹ
• ٯํͷؔ࿈͕มߋʹͳΔ߹ʹ௨͕ݺΕͳ͍Λमਖ਼
[email protected]
[email protected]
Slide 7
Slide 7 text
Already compatible with
Swift 3 & Xcode 8
https://github.com/realm/realm-cocoa/issues/3796
[email protected]
Slide 8
Slide 8 text
Protip for Xcode 8 beta3 and Carthage
[email protected]
$ echo SWIFT_VERSION=\"3.0\">swift3.xcconfig
$ XCODE_XCCONFIG_FILE=`pwd`/swift3.xcconfig \
carthage update --platform iOS --no-use-binaries
Slide 16
Slide 16 text
Using RxRealm
[email protected]
pod 'RxSwift'
pod 'RxCocoa'
pod 'RealmSwift'
pod 'RxRealm'
Slide 17
Slide 17 text
RxRealm makes Realm observable
[email protected]
Realm.asObservable()
Results.asObservable()
List.asObservable()
LinkingObjects.asObservable()
AnyRealmCollection.asObservable()
Slide 18
Slide 18 text
RxRealm makes Realm observable
[email protected]
Results.asObservableArray()
List.asObservableArray()
LinkingObjects.asObservableArray()
AnyRealmCollection.asObservableArray()
Slide 19
Slide 19 text
RxRealm makes Realm observable
[email protected]
Realm.asObservableChangeset()
Results.asObservableChangeset()
List.asObservableChangeset()
LinkingObjects.asObservableChangeset()
AnyRealmCollection.asObservableChangeset()
Slide 20
Slide 20 text
RxRealm makes Realm observable
[email protected]
Realm.asObservableChangesetArray()
Results.asObservableChangesetArray()
List.asObservableChangesetArray()
LinkingObjects.asObservableChangesetArray()
AnyRealmCollection.asObservableChangesetArray()
Slide 21
Slide 21 text
RxRealm makes Realm observable
[email protected]
Realm.rx_add()
Realm.rx_delete()
Slide 22
Slide 22 text
RxRealm makes Realm observable
[email protected]
public func asObservable() -> Observable {
return Observable.create {observer in
let token = self.addNotificationBlock {changeset in
let value: Self
switch changeset {
case .Initial(let latestValue):
value = latestValue
case .Update(let latestValue, _, _, _):
value = latestValue
case .Error(let error):
observer.onError(error)
return
}
observer.onNext(value)
}
return AnonymousDisposable {
observer.onCompleted()
token.stop()
}
}
}
Slide 23
Slide 23 text
RxRealm makes Realm observable
[email protected]
public func asObservable() -> Observable {
return Observable.create {observer in
let token = self.addNotificationBlock {changeset in
let value: Self
...
observer.onNext(value)
}
return AnonymousDisposable {
observer.onCompleted()
token.stop()
}
}
}
Slide 24
Slide 24 text
RxRealm makes Realm observable
[email protected]
public func asObservable() -> Observable {
return Observable.create {observer in
let token = self.addNotificationBlock {changeset in
let value: Self
...
observer.onNext(value)
}
return AnonymousDisposable {
observer.onCompleted()
token.stop()
}
}
}
Slide 25
Slide 25 text
RxRealm makes Realm observable
[email protected]
public extension NotificationEmitter where Self: RealmCollectionType {
public func asObservable() -> Observable {
return Observable.create {...}
}
}
Slide 26
Slide 26 text
RxRealm makes Realm observable
[email protected]
public protocol NotificationEmitter {
func addNotificationBlock(block: (RealmCollectionChange) -> ())
-> NotificationToken
}
extension List: NotificationEmitter {}
extension AnyRealmCollection: NotificationEmitter {}
extension Results: NotificationEmitter {}
extension LinkingObjects: NotificationEmitter {}
Slide 27
Slide 27 text
RxRealm makes Realm observable
[email protected]
public extension NotificationEmitter where Self: RealmCollectionType {
public func asObservable() -> Observable {
return Observable.create {...}
}
}
Slide 28
Slide 28 text
Usage
[email protected]
var token: NotificationToken?
func searchWithText(text: String) {
token = realm
.objects(Location)
.filter("...")
.sorted("...")
.addNotificationBlock { (...) in
...
tableView.reloadData()
}
...
}
Slide 29
Slide 29 text
Usage
[email protected]
realm
.objects(Location)
.filter("address CONTAINS %@", query)
.sorted("identifier")
.asObservable()
.subscribeNext {[unowned self]results in
...
}.addDisposableTo(self.bag)
Slide 30
Slide 30 text
Example
[email protected]
/*
Observable> - wrap Results as observable
*/
realm.objects(Lap).asObservable()
.map {laps in "\(laps.count) laps"}
.subscribeNext {[unowned self]text in
self.title = text
}
.addDisposableTo(bag)
/*
Observable> - convert Results to Array and wrap as observable
*/
realm.objects(Lap).sorted("time", ascending: false).asObservableArray()
.map {array in array.prefix(5) }
.bindTo(tableView.rx_itemsWithCellIdentifier("Cell", cellType: UITableViewCell.self)) {row, element, cell in
cell.textLabel!.text = formatter.stringFromDate(NSDate(timeIntervalSinceReferenceDate: element.time))
}.addDisposableTo(bag)
/*
Use bindable sinks to add objects
*/
addOneItemButton.rx_tap
.map { Lap() }
.bindTo(Realm.rx_add())
.addDisposableTo(bag)
addTwoItemsButton.rx_tap
.map { [Lap(), Lap()] }
.bindTo(Realm.rx_add())
.addDisposableTo(bag)
Slide 31
Slide 31 text
Incremental search
[email protected]
class ViewController: UIViewController, UISearchBarDelegate, UITableViewDataSource {
...
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return results.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
cell = ...
item = results[indexPath.row]
cell.textLabel.text = ...
return cell
}
func searchWithText(text: String) {
realm
.objects(Location)
.filter("...")
.sorted("...")
.addNotificationBlock { (...) in
...
}
...
tableView.reloadData()
}
func searchBar(searchBar: UISearchBar, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
...
searchWithText(text)
return true
}
Slide 32
Slide 32 text
Incremental search
[email protected]
class ViewController: UIViewController {
let bag = DisposeBag()
let realm = try! Realm()
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
searchBar
.rx_text
.subscribeNext { [unowned self] (query) in
self.realm
.objects(Location)
.filter("address CONTAINS %@", query)
.sorted("identifier")
.asObservable()
.bindTo(self.tableView.rx_itemsWithCellIdentifier("Cell", cellType: UITableViewCell.self)) {(
cell.textLabel!.text = element.address
self.tableView.reloadData()
}.addDisposableTo(self.bag)
}
.addDisposableTo(bag)
}
Slide 33
Slide 33 text
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: [email protected]
• ! Slack: slack.realm.io/
[email protected]
[email protected]