为什么CKModifyRecordsOperation批量删除CloudKit中的记录不删除记录？
Why is CKModifyRecordsOperation to batch delete records in CloudKit not deleting records?
我有代码可以从 CloudKit 的私有数据库中批量删除记录，但它不起作用。 （我还注意到我保存的记录没有保留。）我使用的是实际的 iPhone 8 和我个人使用的实际 Apple ID，而不是开发者帐户。我用 iPhone 8 模拟器得到了相同的结果。当我使用 iPhone 8 Simulator 使用与我的开发者帐户相同的 Apple ID 登录 iCloud 时，我没有遇到此问题。
在回答这个post后没有给我解决方案，我认为这个问题最重要的是当我使用不是我的开发者帐户的Apple ID时会发生它。我在两个不是我的开发者帐户的不同 Apple ID 上进行了尝试。这可能是我在某处忽略的设置吗？
None of the similar posts on Whosebug 解决了这个问题。
看起来有些代码应该删除的记录实际上被删除了，但有些没有。当我再次运行代码时，记录仍然存在，但比以前少了一个。
这是我的代码：
class AppDelegate: UIResponder, UIApplicationDelegate, UISplitViewControllerDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
let splitViewController = window!.rootViewController as! UISplitViewController
let navigationController = splitViewController.viewControllers[splitViewController.viewControllers.count-1] as! UINavigationController
navigationController.topViewController!.navigationItem.leftBarButtonItem = splitViewController.displayModeButtonItem
splitViewController.delegate = self
deleteRecords()
return true
}
}
let privateDatabase = CKContainer.default().privateCloudDatabase
func deleteRecords() {
print("deleteRecords()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=11=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
let operation = CKModifyRecordsOperation(recordsToSave: nil, recordIDsToDelete: recordIDsToDelete)
operation.modifyRecordsCompletionBlock = { savedRecords, deletedRecordIDs, error in
if error == nil {
print("Batch delete records!")
print("number of records deleted:", deletedRecordIDs?.count as Any)
printNumberOfRecords()
} else {
print(error as Any)
}
}
privateDatabase.add(operation)
}
}
}
}
func printNumberOfRecords() {
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("Number of records in CloudKit=", records.count)
}
}
}
}
这是代码第一个 运行 的调试 window 中的输出：
deleteRecords()
records.count= 93
recordIDsToDelete:
[<CKRecordID: 0x280bbcb00; recordName=B33A3F23-23D3-44C6-AEBC-86DD718DBB62, zoneID=...>, ... ]
Batch delete records!
number of records deleted: Optional(93)
Number of records in CloudKit= 67
这是代码的第二个 运行 的调试 window 中的输出：
deleteRecords()
records.count= 92
recordIDsToDelete:
[<CKRecordID: 0x280080d00; recordName=BBA5B236-A036-4AC9-82E1-165D3B003E23, zoneID=...>, ... ]
Batch delete records!
number of records deleted: Optional(92)
Number of records in CloudKit= 52
当我使用此代码而不是 deleteRecords() 时 ...
func deleteRecordsOneAtATime() {
print("deleteRecordsOneAtATime()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=14=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
for recordID in recordIDsToDelete {
privateDatabase.delete(withRecordID: recordID) {
(localRecordID: CKRecord.ID?, error: Error?) in
if error != nil {
print("error:\n", error as Any)
} else {
if localRecordID != nil {
print("localRecordID:", localRecordID as Any)
}
}
}
printNumberOfRecords()
}
}
}
}
}
我进入调试 window:
deleteRecordsOneAtATime()
Number of records in CloudKit= 97
records.count= 97
recordIDsToDelete:
[<CKRecordID: 0x283622ec0; recordName=600B7BFE-04FE-4F63-BC4C-5AD1AE08908D, zoneID=...>, ... ]
localRecordID: Optional(<CKRecordID: 0x2821ff320; recordName=8E8CD0F0-FDF5-4CB9-B16C-5CF91C3503A2, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x2821ff320; recordName=8E0A0816-1B05-4707-A4E7-C40762E68663, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210b200; recordName=8E127624-F1D3-401E-ADF2-BB97354FCA98, zoneID=_defaultZone:__defaultOwner__>)
...
Number of records in CloudKit= 87
localRecordID: Optional(<CKRecordID: 0x282108660; recordName=962639D1-83E6-40D2-A57D-F70ADCEBED08, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210ff20; recordName=968D62AB-523E-464B-94B8-3C90E0382AB6, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210faa0; recordName=96C92DD2-ED27-4FED-8320-44D03981B04F, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x2821085a0; recordName=96A2D515-D3E7-475E-B609-8389DE4B88D1, zoneID=_defaultZone:__defaultOwner__>)
这是我的最新代码，但仍然无效：
func removeRecords() {
print("removeRecords()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=16=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
DispatchQueue.main.async {
if recordIDsToDelete.count > 50 {
let slice = Array(recordIDsToDelete[0 ..< 50])
let leftOver = Array(recordIDsToDelete[50 ... recordIDsToDelete.count-1])
privateDatabase.remove(recordsWith: slice) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
DispatchQueue.main.async {
privateDatabase.remove(recordsWith: leftOver) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
}
print("type of result:", type(of: result))
}
} else {
privateDatabase.remove(recordsWith: recordIDsToDelete) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
privateDatabase.remove(recordsWith: recordIDsToDelete) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
}
}
}
}
extension CKDatabase {
func remove(
recordsWith ids: [CKRecord.ID], completion: @escaping CompletionHandler<Void>) {
let operation = CKModifyRecordsOperation(recordIDsToDelete: ids)
operation.qualityOfService = .userInitiated
operation.modifyRecordsCompletionBlock = { _, _, error in
if let error = error {
print("error:")
print(error)
if let err = error as? CKError, let time = err.retryAfterSeconds {
DispatchQueue.main.asyncAfter(deadline: .now() + time) {
self.remove(recordsWith: ids, completion: completion)
}
} else {
completion(.failure(error))
print("CKDatabase.remove(_:_:) failed.")
}
} else {
completion(.success(()))
print("CKDatabase.remove(_:_:) succeeded.")
}
}
self.add(operation)
}
}
试试这些改变；
之后
let operation = CKModifyRecordsOperation(recordsToSave: nil, recordIDsToDelete: recordIDsToDelete)
添加
operation.database = privateDatabase
operation.queuePriority = .veryHigh
operation.configuration = CKOperation.Configuration()
operation.configuration.qualityOfService = .userInteractive
然后开始操作;
operation.start()
而不是；
privateDatabase.add(operation)
有时 CloudKit 会向您抛出不同的错误，因此您必须确保处理它们，如果错误包含 retryAfterSeconds 则再次触发调用。在这里，使用 CKDatabase 的包装器方法可以轻松处理中的错误。调用任何 CloudKit API 时，请确保将您的请求分批处理成更小的块（例如，每个块 100 个项目）。
extension CKDatabase {
func remove(
recordsWith ids: [CKRecord.ID],
completion: @escaping (Result<Void, Error>) -> Void
) {
let operation = CKModifyRecordsOperation(recordIDsToDelete: ids)
operation.qualityOfService = .userInitiated
operation.modifyRecordsCompletionBlock = { _, _, error in
if let error = error {
if let err = error as? CKError, let time = err.retryAfterSeconds {
DispatchQueue.main.asyncAfter(deadline: .now() + time) {
self.remove(recordsWith: ids, completion: completion)
}
} else {
completion(.failure(error))
}
} else {
completion(.success(()))
}
}
self.add(operation)
}
}
我认为代码正在删除它从执行查询方法中获得的内容。只是执行查询方法没有从所有现有记录中返回记录 ID。
我有代码可以从 CloudKit 的私有数据库中批量删除记录，但它不起作用。 （我还注意到我保存的记录没有保留。）我使用的是实际的 iPhone 8 和我个人使用的实际 Apple ID，而不是开发者帐户。我用 iPhone 8 模拟器得到了相同的结果。当我使用 iPhone 8 Simulator 使用与我的开发者帐户相同的 Apple ID 登录 iCloud 时，我没有遇到此问题。
在回答这个post后没有给我解决方案，我认为这个问题最重要的是当我使用不是我的开发者帐户的Apple ID时会发生它。我在两个不是我的开发者帐户的不同 Apple ID 上进行了尝试。这可能是我在某处忽略的设置吗？
None of the similar posts on Whosebug 解决了这个问题。
看起来有些代码应该删除的记录实际上被删除了，但有些没有。当我再次运行代码时，记录仍然存在，但比以前少了一个。
这是我的代码：
class AppDelegate: UIResponder, UIApplicationDelegate, UISplitViewControllerDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
let splitViewController = window!.rootViewController as! UISplitViewController
let navigationController = splitViewController.viewControllers[splitViewController.viewControllers.count-1] as! UINavigationController
navigationController.topViewController!.navigationItem.leftBarButtonItem = splitViewController.displayModeButtonItem
splitViewController.delegate = self
deleteRecords()
return true
}
}
let privateDatabase = CKContainer.default().privateCloudDatabase
func deleteRecords() {
print("deleteRecords()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=11=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
let operation = CKModifyRecordsOperation(recordsToSave: nil, recordIDsToDelete: recordIDsToDelete)
operation.modifyRecordsCompletionBlock = { savedRecords, deletedRecordIDs, error in
if error == nil {
print("Batch delete records!")
print("number of records deleted:", deletedRecordIDs?.count as Any)
printNumberOfRecords()
} else {
print(error as Any)
}
}
privateDatabase.add(operation)
}
}
}
}
func printNumberOfRecords() {
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("Number of records in CloudKit=", records.count)
}
}
}
}
这是代码第一个 运行 的调试 window 中的输出：
deleteRecords()
records.count= 93
recordIDsToDelete:
[<CKRecordID: 0x280bbcb00; recordName=B33A3F23-23D3-44C6-AEBC-86DD718DBB62, zoneID=...>, ... ]
Batch delete records!
number of records deleted: Optional(93)
Number of records in CloudKit= 67
这是代码的第二个 运行 的调试 window 中的输出：
deleteRecords()
records.count= 92
recordIDsToDelete:
[<CKRecordID: 0x280080d00; recordName=BBA5B236-A036-4AC9-82E1-165D3B003E23, zoneID=...>, ... ]
Batch delete records!
number of records deleted: Optional(92)
Number of records in CloudKit= 52
当我使用此代码而不是 deleteRecords() 时 ...
func deleteRecordsOneAtATime() {
print("deleteRecordsOneAtATime()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=14=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
for recordID in recordIDsToDelete {
privateDatabase.delete(withRecordID: recordID) {
(localRecordID: CKRecord.ID?, error: Error?) in
if error != nil {
print("error:\n", error as Any)
} else {
if localRecordID != nil {
print("localRecordID:", localRecordID as Any)
}
}
}
printNumberOfRecords()
}
}
}
}
}
我进入调试 window:
deleteRecordsOneAtATime()
Number of records in CloudKit= 97
records.count= 97
recordIDsToDelete:
[<CKRecordID: 0x283622ec0; recordName=600B7BFE-04FE-4F63-BC4C-5AD1AE08908D, zoneID=...>, ... ]
localRecordID: Optional(<CKRecordID: 0x2821ff320; recordName=8E8CD0F0-FDF5-4CB9-B16C-5CF91C3503A2, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x2821ff320; recordName=8E0A0816-1B05-4707-A4E7-C40762E68663, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210b200; recordName=8E127624-F1D3-401E-ADF2-BB97354FCA98, zoneID=_defaultZone:__defaultOwner__>)
...
Number of records in CloudKit= 87
localRecordID: Optional(<CKRecordID: 0x282108660; recordName=962639D1-83E6-40D2-A57D-F70ADCEBED08, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210ff20; recordName=968D62AB-523E-464B-94B8-3C90E0382AB6, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x28210faa0; recordName=96C92DD2-ED27-4FED-8320-44D03981B04F, zoneID=_defaultZone:__defaultOwner__>)
localRecordID: Optional(<CKRecordID: 0x2821085a0; recordName=96A2D515-D3E7-475E-B609-8389DE4B88D1, zoneID=_defaultZone:__defaultOwner__>)
这是我的最新代码，但仍然无效：
func removeRecords() {
print("removeRecords()")
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: DatabaseNameStrings.recordTypeAffirmation, predicate: predicate)
privateDatabase.perform(query, inZoneWith: nil) {
(records: [CKRecord]?, error: Error?) in
if error != nil {
print(error as Any)
} else {
if let records = records {
print("records.count=", records.count)
let recordIDsToDelete = records.map { [=16=].recordID }
print("recordIDsToDelete:")
print(recordIDsToDelete)
DispatchQueue.main.async {
if recordIDsToDelete.count > 50 {
let slice = Array(recordIDsToDelete[0 ..< 50])
let leftOver = Array(recordIDsToDelete[50 ... recordIDsToDelete.count-1])
privateDatabase.remove(recordsWith: slice) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
DispatchQueue.main.async {
privateDatabase.remove(recordsWith: leftOver) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
}
print("type of result:", type(of: result))
}
} else {
privateDatabase.remove(recordsWith: recordIDsToDelete) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
privateDatabase.remove(recordsWith: recordIDsToDelete) {
(result: Result<Void, Error>) in
print("result:", result)
switch result {
case .failure(let err):
print("failure")
print(err)
case .success(()):
print("success")
}
print("type of result:", type(of: result))
}
}
}
}
}
}
extension CKDatabase {
func remove(
recordsWith ids: [CKRecord.ID], completion: @escaping CompletionHandler<Void>) {
let operation = CKModifyRecordsOperation(recordIDsToDelete: ids)
operation.qualityOfService = .userInitiated
operation.modifyRecordsCompletionBlock = { _, _, error in
if let error = error {
print("error:")
print(error)
if let err = error as? CKError, let time = err.retryAfterSeconds {
DispatchQueue.main.asyncAfter(deadline: .now() + time) {
self.remove(recordsWith: ids, completion: completion)
}
} else {
completion(.failure(error))
print("CKDatabase.remove(_:_:) failed.")
}
} else {
completion(.success(()))
print("CKDatabase.remove(_:_:) succeeded.")
}
}
self.add(operation)
}
}
试试这些改变；
之后
let operation = CKModifyRecordsOperation(recordsToSave: nil, recordIDsToDelete: recordIDsToDelete)
添加
operation.database = privateDatabase
operation.queuePriority = .veryHigh
operation.configuration = CKOperation.Configuration()
operation.configuration.qualityOfService = .userInteractive
然后开始操作;
operation.start()
而不是；
privateDatabase.add(operation)
有时 CloudKit 会向您抛出不同的错误，因此您必须确保处理它们，如果错误包含 retryAfterSeconds 则再次触发调用。在这里，使用 CKDatabase 的包装器方法可以轻松处理中的错误。调用任何 CloudKit API 时，请确保将您的请求分批处理成更小的块（例如，每个块 100 个项目）。
extension CKDatabase {
func remove(
recordsWith ids: [CKRecord.ID],
completion: @escaping (Result<Void, Error>) -> Void
) {
let operation = CKModifyRecordsOperation(recordIDsToDelete: ids)
operation.qualityOfService = .userInitiated
operation.modifyRecordsCompletionBlock = { _, _, error in
if let error = error {
if let err = error as? CKError, let time = err.retryAfterSeconds {
DispatchQueue.main.asyncAfter(deadline: .now() + time) {
self.remove(recordsWith: ids, completion: completion)
}
} else {
completion(.failure(error))
}
} else {
completion(.success(()))
}
}
self.add(operation)
}
}
我认为代码正在删除它从执行查询方法中获得的内容。只是执行查询方法没有从所有现有记录中返回记录 ID。