SwiftDataを使って10万件のデータを読み書きする

4XJGU%BUBΛ࢖ͬͯ ສ݅ͷσʔλΛಡΈॻ͖͢Δ ౔ ZJEFWୈ̎̕ճษڧձ ͖͋ͲΜ !BLJEPO

BLJEPO w!BLJEPO w4BOTBO w৽ଔͰಇ͖࢝Ίͯϲ݄໨ wࣾձͱ͍͏΋ͷΛ஌Γ࢝ΊͨJ04ΤϯδχΞ ࣗݾ঺հ

BLJEPO IUUQTZJEFWDPOOQBTTDPNFWFOU

BLJEPO

BLJEPO IUUQTZJEFWDPOOQBTTDPNFWFOU

BLJEPO IUUQTZJEFWDPOOQBTTDPNFWFOU ZJEFW ͖͋ͲΜؤுΕ

BLJEPO ϚαΧϦͷىݯʹ͍ͭͯIUUQTRJJUBDPNLBJUZPJUFNTEEGBFDGE ϚαΧϦେ׻ܴ

BLJEPO 4XJGU%BUBΛ࢖ͬͯ ສ݅ͷσʔλΛಡΈॻ͖͢Δ ͷΛௐ΂ͯΈͨ

BLJEPO എܠ w ;ͱɺ഑ྻ͕ҰཡԽ͞ΕͯΔϦετΛ࡞ Γ͍ͨͳʙ w ͳΜͱͳ͘ສ͙݅Β͍Λѻ͍͍ͨͳ w 4XJGU%BUBΛ৮ͬͨ͜ͱͳ͔ͬͨͳ

BLJEPO Α͠΍Ζ͏

BLJEPO ສ݅ͷσʔλΛಡΈॻ͖͢Δ

BLJEPO ϞνϕʔγϣϯJTԿ ສ݅Λຊ౰ʹϩʔΧϧͰ࣋ͭ΂͖ʁ🤔

BLJEPO ϞνϕʔγϣϯJTԿ w ΦϑϥΠϯͰͷར༻Λ૝ఆ w ࢁதɺ஍ԼమɺඈߦػͳͲͳͲ w ݕࡧػೳͷॆ࣮ w ΠϯσοΫεϥϕϧΛ࢖ͬͨߜΓࠐΈମݧ
w $BMM%JSFDUPSZ&YUFOTJPO w ϩʔΧϧ%#͔ΒͰ͔͠ݕࡧͰ͖ͳ͍

BLJEPO ໨࣍ w 4XJGU%BUBɺ4XJGU6*Λ࢖ͬͨγϯϓϧͳ-JTUͷ࣮૷ w ສ݅ΛѻͬͨࡍͷύϑΥʔϚϯε w ສ݅Λ૝ఆͨ࣌͠ͷ࣮૷ύλʔϯ w ଞͷ03.ͱൺֱ

BLJEPO ໨࣍ w4XJGU%BUBɺ4XJGU6*Λ࢖ͬͨγϯϓϧͳ-JTUͷ࣮૷ w ສ݅ΛѻͬͨࡍͷύϑΥʔϚϯε w ສ݅Λ૝ఆͨ࣌͠ͷ࣮૷ύλʔϯ w ଞͷ03.ͱൺֱ

BLJEPO 4XJGU6*ͱ4XJGU%BUBΛ࢖ͬͨ γϯϓϧͳ-JTUͷ࣮૷

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ class SimpleObject {
var id: String var name: String var creationDate: Date }

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData @Model class SimpleObject { @Attribute(.unique) var
id: String var name: String var creationDate: Date } ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData @Model class SimpleObject { @Attribute(.unique) var
id: String var name: String var creationDate: Date init(name: String = "", createdAt: Date = .now) { self.id = UUID().uuidString self.name = name self.creationDate = createdAt } } ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ ɾNPEFMT΁ͷมԽΛ؂ࢹ ɾσʔλΛϑΣον ɾมߋΛอଘ ɾมߋΛ΋ͱʹ໭͢ .PEFM$POUFYU .PEFM$POUBJOFS ɾNPEFMͷ࣋ଓతόοΫΤϯυΛఏڙ ɾDPO
fi HͷΧελϜ ɾTDIFNBNJHSBUJPOͷΧελϜ %#ຊମ %#Λૢ࡞͢ΔJOUFSGBDF

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData let container = try ModelContainer(for: [SimpleObject.self])
ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData import SwiftUI @main struct SwiftDataSampleApp: App
{ var body: some Scene { WindowGroup { SimpleObjectListView() } .modelContainer(for: [SimpleObject.self]) } } ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData import SwiftUI struct SimpleObjectListView: View {
@Environment(\.modelContext) private var modelContext } ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ var object = SimpleObject(name: “akidon") // ... modelContext.insert(object)
try modelContext.save() ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ import SwiftData import SwiftUI struct SimpleObjectListView: View {
@Environment(\.modelContext) private var modelContext @Query(sort: \SimpleObject.name, order: .forward) private var simpleObjects: [SimpleObject] var body: some View { List { ForEach(simpleObjects) { object in Text(object.name) } } } } ɾ.PEFMͷ࣮૷ ɾ.PEFM$POUBJOFS ɾ.PEFM$POUFYU ɾσʔλͷ௥Ճ ɾ!2VFSZ

BLJEPO %&.0

BLJEPO

BLJEPO ݕࡧͱΠϯσοΫεϥϕϧ ΋࣮૷͍ͨ͠

BLJEPO ݕࡧͷ࣮૷ @Query(sort: \SimpleObject.name, order: .forward) private var simpleObjects: [SimpleObject]
@State private var searchText: String = “" var searchResults: [SimpleObject] { if searchText.isEmpty { return simpleObjects } else { return simpleObjects.filter { $0.name.contains(searchText) } } } var body: some View { List { ForEach(searchResults) { object in Text(object.name) } } .searchable(text: $searchText) }

BLJEPO ݕࡧͷ࣮૷ @Query(sort: \SimpleObject.name, order: .forward) private var simpleObjects: [SimpleObject]
@State private var searchText: String = “" var searchResults: [SimpleObject] { if searchText.isEmpty { return simpleObjects } else { return simpleObjects.filter { $0.name.contains(searchText) } } } var body: some View { List { ForEach(searchResults) { object in Text(object.name) } } .searchable(text: $searchText) } 4JNQMF0CKFDUΛશͯϑΣονͯ͠ΔͨΊ %#ݕࡧΑΓ fi MUFSͷํ͕ߴ଎

BLJEPO ΠϯσοΫεϥϕϧͷ࣮૷ IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOTXJGUVJWJFXTFDUJPOJOEFYMBCFM @ 9DPEFҎ্ J04Ҏ্

BLJEPO ΠϯσοΫεϥϕϧػೳͷ࣮૷ var body: some View { List { ForEach(sections,
id: \.key) { section in Section(header: Text(section.key)) { ForEach(section.items) { item in Text(item.name) } } .sectionIndexLabel(section.key) } } .searchable(text: $searchText) }

BLJEPO %&.0

BLJEPO

BLJEPO ໨࣍ w 4XJGU%BUBɺ4XJGU6*Λ࢖ͬͨγϯϓϧͳ-JTUͷ࣮૷ wສ݅ΛѻͬͨࡍͷύϑΥʔϚϯε w ສ݅Λ૝ఆͨ࣌͠ͷ࣮૷ύλʔϯ w ଞͷ03.ͱൺֱ

BLJEPO ·ͣ͸ສ݅Λॻ͖ࠐΉ

BLJEPO ສ݅ͷॻ͖ࠐΈ var object = SimpleObject(name: “akidon") // ... modelContext.insert(object)
try modelContext.save()

BLJEPO ສ݅ͷॻ͖ࠐΈ for _ in 0..<count { let object =
SimpleObject(name: "akidon") modelContext.insert(object) } try modelContext.save() ˞.BJO5ISFBE

BLJEPO ͲΕ͙Β͍͔͔࣌ؒΓͦ͏ʁ ᶃNTᶄ@NTᶅ@NT @Model class SimpleObject { @Attribute(.unique) var id:
String var name: String var creationDate: Date }

BLJEPO Α͠΍Ζ͏

BLJEPO ඵ΄Ͳ6*͕ϒϩοΫ͞ΕΔ

BLJEPO IUUQTXXXFNFSHFUPPMTDPNCMPHQPTUTTXJGUEBUBWTSFBMNQFSGPSNBODFDPNQBSJTPO

BLJEPO $PNQMFY0CKFDUTʹͳΔͱສ݅ͷॻ͖ࠐΈʹඵҎ্͔͔Δ IUUQTXXXFNFSHFUPPMTDPN@OFYUJNBHF VSM'JNBHFT'CMPHT'CMPH'XSJUFQFSGPSNBODFQOHXREQMEQM@)RFL'[ZX1/JD99[5JE

BLJEPO όοΫάϥ΢ϯυͰॻ͖ࠐΈ͍ͨ

BLJEPO ສ݅ͷॻ͖ࠐΈ for _ in 0..<count { let object =
SimpleObject(name: "akidon") modelContext.insert(object) } try modelContext.save()

BLJEPO γϯϓϧͳ-JTUͷ࣮૷ ɾNPEFMT΁ͷมԽΛ؂ࢹ ɾσʔλΛϑΣον ɾมߋΛอଘ ɾมߋΛ΋ͱʹ໭͢ .PEFM$POUFYU .PEFM$POUBJOFS ɾNPEFMͷ࣋ଓతόοΫΤϯυΛఏڙ ɾDPO
fi HͷΧελϜ ɾTDIFNBNJHSBUJPOͷΧελϜ %#ຊମ %#Λૢ࡞͢ΔJOUFSGBDF 4FOEBCMF /PO4FOEBCMF

BLJEPO όοΫάϥ΢ϯυͰॻ͖ࠐΉ IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOTXJGUEBUBNPEFMBDUPS

BLJEPO όοΫάϥ΢ϯυͰॻ͖ࠐΉ import Foundation import SwiftData @ModelActor actor SimpleObjectActor {
func fetchAllData() throws -> [SimpleObject] { var descriptor = FetchDescriptor<SimpleObject>( sortBy: [SortDescriptor(\SimpleObject.name, order: .forward)] ) return try modelContext.fetch(descriptor) } func insert(items: [SimpleObject]) throws { _ = items.map { modelContext.insert($0) } try modelContext.save() } func deleteAll() throws { try modelContext.delete(model: SimpleObject.self) } }

BLJEPO όοΫάϥ΢ϯυͰॻ͖ࠐΉ IUUQTHJUIVCDPNBQQMFTBNQMFCBDLZBSECJSETCMPCNBJO.VMUJQMBUGPSN4IPQ#JSE#SBJOTXJGU "QQMFެࣜαϯϓϧ ೥લ Ͱ͸ .PEFM"DUPSʹ4JOHMFUPOΛ֬ೝ ͕ͩɺOPOJTPMBUFE VOTBGF ͕ඞཁ

BLJEPO %&.0

BLJEPO $PNQMFY0CKFDUͰ΋ࢼͯ͠ΈΔ

BLJEPO $PNQMFY0CKFDU @Model class School { @Attribute(.unique) var id: String
var name: String var location: String @Relationship(deleteRule: .cascade) var students: [Student] } @Model class Student { @Attribute(.unique) var id: String var firstName: String var surname: String var age: Int @Relationship(inverse: \School.students) var school: School? @Relationship(deleteRule: .cascade) var grades: [Grade] } @Model class Grade { @Attribute(.unique) var id: String var subject: String var grade: String var examBoard: String @Relationship(inverse: \Student.grades) var student: Student? } ˞ࡶʹ࡞ͬͨͷͰؒҧͬͯΔ͔΋

BLJEPO %&.0

BLJEPO දࣔʹ໿ඵ͔͔ΔΑ͏ʹͳͬͨ ˞ڐ༰ൣғ͔Ͳ͏͔͸ɺϓϩμΫτ࣍ୈ

BLJEPO ໨࣍ w 4XJGU%BUBɺ4XJGU6*Λ࢖ͬͨγϯϓϧͳ-JTUͷ࣮૷ w ສ݅ΛѻͬͨࡍͷύϑΥʔϚϯε wສ݅Λ૝ఆͨ࣌͠ͷ࣮૷ύλʔϯ w ଞͷ03.ͱൺֱ

BLJEPO ٻΊ͍ͯΔ΋ͷ w ମײҰॠ ඵ ͷ಺ʹϢʔβ͸ϦετΛૢ࡞Ͱ͖Δ w ΠϯσοΫεϥϕϧΛ࣮૷͠௚ײతͳݕࡧ͕࣮ߦͰ͖Δ w ݕࡧόʔΛ࣮૷͠ɺ໊લͷݕࡧ͕Ͱ͖Δ
w ສ݅ͷσʔλΛ࣋ͭঢ়ଶͰ΋ύϑΥʔϚϯεྼԽΛײ͡ͳ͍ w ্هͷશ͕ͯΦϑϥΠϯͰ΋ಈ࡞͢Δ

BLJEPO ࣮૷ύλʔϯ " ແݶεΫϩʔϧͷ࣮૷ # શ݅ΛϑΣονͭͭ͠ɺҰ෦ͷΈදࣔ $ ಠࣗͷσʔλߏ଄Λߏங͢Δ

BLJEPO ແݶεΫϩʔϧͷ࣮૷ ສ݅͸౓ʹGFUDI͢Δඞཁ͸ͳ͍ ද͍ࣔͨ͠಺༰͚ͩΛద੾ʹGFUDI͢Δ ݕࡧͷ࣮૷ΛͲ͏͠Α͏🤔

BLJEPO ແݶεΫϩʔϧ var body: some View { List { ForEach(simpleObjects.enumerated(),
id: \.element.id) { index, object in Text(object.name) .onAppear { let listCount = self.simpleObjects.count if index >= listCount - 1 { var descriptor = FetchDescriptor<SimpleObject>( sortBy: [SortDescriptor(\SimpleObject.name, order: .forward)] ) descriptor.fetchOffset = listCount descriptor.fetchLimit = 50 Task { guard let nextLists = try? modelContext.fetch(descriptor) else { return } await MainActor.run { simpleObjects.append(contentsOf: nextLists) } } } } } } .scrollIndicators(.hidden) }

BLJEPO ແݶεΫϩʔϧ var body: some View { List { ForEach(simpleObjects.enumerated(),
id: \.element.id) { index, object in Text(object.name) .onAppear { let listCount = self.simpleObjects.count if index >= listCount - 1 { var descriptor = FetchDescriptor<SimpleObject>( sortBy: [SortDescriptor(\SimpleObject.name, order: .forward)] ) descriptor.fetchOffset = listCount descriptor.fetchLimit = 50 Task { guard let nextLists = try? modelContext.fetch(descriptor) else { return } await MainActor.run { simpleObjects.append(contentsOf: nextLists) } } } } } } .scrollIndicators(.hidden) } εΫϩʔϧόʔ͸࣮ࡍͷϖʔδͷ௕͞Λ ൓ө͢Δ΂͖ͳͷͰඇදࣔ

BLJEPO ແݶεΫϩʔϧ ݕࡧόʔ private func searchSimpleObjectsInStore(for searchText: String) { let
predicate = #Predicate<SimpleObject> { school in school.name.starts(with: searchText) } let descriptor = FetchDescriptor<SimpleObject>( predicate: predicate, sortBy: [SortDescriptor(\SimpleObject.name, order: .forward)] ) Task { guard let searchedLists = try? modelContext.fetch(descriptor) else { return } await MainActor.run { simpleObjects = searchedLists } } }

BLJEPO ແݶεΫϩʔϧ ݕࡧόʔ IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOTXJGUEBUBJOEFY @ JB J04Ҏ্

BLJEPO ແݶεΫϩʔϧ ݕࡧόʔ @Model class SimpleObject { #Index<SimpleObject>([\SimpleObject.name]) @Attribute(.unique) var
id: String var name: String var creationDate: Date }

BLJEPO 4XJGU%BUBͷ෼͔Βͳ͍ͱ͜Ζʂʂ var descriptor = FetchDescriptor<SimpleObject>( sortBy: [SortDescriptor(\SimpleObject.name, order: .forward)]
) #Index<SimpleObject>([\SimpleObject.name]) ΠϯσοΫεΛష͍ͬͯͯ΋ɺɺɺ શ݅ιʔτͯ͠औಘͷ৔߹Ͱ͸ɺϑΣον଎౓͸షΔલͱมΘΒͳ͍ ͜ͷTPSU#Z͸%#͔Βશ݅औಘͨ͠ޙʹιʔτͯ͠ΔͷͰ͸ʁ 🤔 લํݕࡧ͢ΔͱΠϯσοΫεͷՁ஋͸ൃش͕ͨ͠ɺ୹ॖ࣌ؒ͸ఔ౓ )%Ͱ͸ແ͘ͳ͔ͬͨΒɺͦ΋ͦ΋଎͍

BLJEPO ΠϯσοΫεϥϕϧ

BLJEPO ΠϯσοΫεϥϕϧ ࣮૷ؒʹ߹Θͣʂʂʂ

BLJEPO ࣮૷్த͚ͩͲ%&.0

BLJEPO શ݅ΛϑΣονͭͭ͠ɺҰ෦ͷΈදࣔ ɾઌ಄͔Β݅Λऔಘ͠දࣔ͢Δ ɾόοΫάϥ΢ϯυͰશ݅Λऔಘ͢Δ ɾ׬ྃ࣍ୈɺ݅ͷ഑ྻͱஔ͖׵͑Δ

BLJEPO ࣮૷్த͚ͩͲ%&.0

BLJEPO ಠࣗͷσʔλߏ଄Λߏங͢Δ ΞϧϑΝϕοτจࣈºສ,# ͳͥॻ͖ࠐΈಡΈग़͠ʹ ͜Ε͚͕͔͔ͩ࣌ؒΔͷ͔ʁ ඵؒʹॲཧͰ͖ΔGPSจϧʔϓͷճ਺ $ ͳΒ?ԯճ

BLJEPO ಠࣗͷσʔλߏ଄Λߏங͢Δ ΞϧϑΝϕοτจࣈºສ,# ͳͥॻ͖ࠐΈಡΈग़͠ʹ ͜Ε͚͕͔͔ͩ࣌ؒΔͷ͔ʁ ɾϘτϧωοΫ͕Կͳͷ͔ ɾPCKFDΛ࢖͏ͱߴ଎ʹͳΔͷ͔ ɾ୯७ʹϑΝΠϧʹಡΈॻ͖Λ࣮ߦ ɾΦϯϝϞϦͰιʔτ࣮ߦ ࠓޙௐ͍͖͍ࠪͯͨ͜͠ͱ
ඵؒʹॲཧͰ͖ΔGPSจϧʔϓͷճ਺ $ ͳΒ?ԯճ

BLJEPO ໨࣍ w 4XJGU%BUBɺ4XJGU6*Λ࢖ͬͨγϯϓϧͳ-JTUͷ࣮૷ w ສ݅ΛѻͬͨࡍͷύϑΥʔϚϯε w ສ݅Λ૝ఆͨ࣌͠ͷ࣮૷ύλʔϯ wଞͷ03.ͱൺֱ

BLJEPO ଞͷ03.ͱൺֱ IUUQTRJJUBDPN.PSJZB5BJDIJJUFNTFEBFG

BLJEPO IUUQTXXXFNFSHFUPPMTDPNCMPHQPTUTTXJGUEBUBWTSFBMNQFSGPSNBODFDPNQBSJTPO ଞͷ03.ͱൺֱ

BLJEPO iOSͷORMͷൺֱ 4XJGU%BUBWT3FBMN1FSGPSNBODF$PNQBSJTPO

BLJEPO ࠷ޙʹ͖͋ͲΜͷࢥ͍ w ࠓޙͷൃలͰɺϝϞϦͷಡΈॻ͖εϐʔυɺ$16ͷॲཧ଎౓͔޲্͠.BJO5ISFBEͰ ࣮ߦͯ͠΋໰୊ͳ͍͕࣌͘ΔͷͰ͸ w ϜʔΞͷ๏ଇͩͱݶքΒ͍͕͠ ࠓ͸ϓϩηοαճ࿏͕ݪࢠݸ෼ͷ෯ w
Ͳ͜Ͱ΋ωοτϫʔΫʹ઀ଓͰ͖ɺΦϑϥΠϯʹͳΔঢ়ଶ͕೔ৗͰ͸ଘࡏ͠ͳ͘ͳ Δ͕࣌͘ΔͷͰ͸ w $BMM%JSFDUPSZ&YUFOTJPO΋ηΩϡϦςΟతͳ໰୊Ͱ-PDBM%#͔͠ڐՄ͍ͯ͠ͳ ͍ͱߟ͑Δ

BLJEPO 'JO

SwiftDataを使って10万件のデータを読み書きする

SwiftDataを使って10万件のデータを読み書きする

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