[英]Converting local Realms to synced Realms: 'customSchema' is inaccessible
I read about the Converting Local Realms to Synced Realms section in docs and I found this nice recipe for Objective-C but I can't implement it on an app fully implemented in Swift. 我在docs中读到了将Local Realms转换为Synced Realms部分的内容,我发现了Objective-C的这个很好的配方 ,但我无法在Swift中完全实现的应用程序上实现它。
var syncConfig = Realm.Configuration()
syncConfig.syncConfiguration = SyncConfiguration(user: user, realmURL: server.appendingPathComponent("/~/app1"))
syncConfig.customSchema = localRealm.schema
~~~~~~~~~~~~~~~~~~~~~~~
^ 'customSchema' is inaccessible due to 'private' protection level
I even added import Realm.Private
but didn't solve the problem. 我甚至添加了import Realm.Private
但没有解决问题。
Should I explicitly use Objective-C for this operation? 我应该明确地使用Objective-C进行此操作吗?
There is no public customSchema
property, you can always refer to the docs (best way to figure out what is intended for public use): 没有公共customSchema
属性,您可以随时参考文档(最好的方法来确定用于公共用途的内容):
https://realm.io/docs/objc/2.10.1/api/Classes/RLMRealmConfiguration.html https://realm.io/docs/objc/2.10.1/api/Classes/RLMRealmConfiguration.html
With no better option, I decided to use Objective-C in my Swift project. 没有更好的选择,我决定在我的Swift项目中使用Objective-C。 So, I added a SWIFT_OBJC_BRIDGING_HEADER
(Xcode does that automatically when you add an Objective-C file) and created a RealmConverter
object: 所以,我添加了一个SWIFT_OBJC_BRIDGING_HEADER
(当你添加一个Objective-C文件时,Xcode自动执行此操作)并创建了一个RealmConverter
对象:
RealmConverter.h RealmConverter.h
#import <Foundation/Foundation.h>
@import Realm;
NS_ASSUME_NONNULL_BEGIN
@interface RealmConverter : NSObject
- (void)convertLocalToSyncRealm:(NSURL *)server local:(NSURL *)local username:(NSString *)username password:(NSString *)password completion:(void (^)(NSError * _Nullable))completion;
@end
NS_ASSUME_NONNULL_END
RealmConverter.m RealmConverter.m
#import "RealmConverter.h"
@import Realm.Dynamic;
@import Realm.Private;
@implementation RealmConverter
- (void)convertLocalToSyncRealm:(NSURL *)server local:(NSURL *)local username:(NSString *)username password:(NSString *)password completion:(void (^)(NSError * _Nullable))completion {
RLMRealmConfiguration *configuration = [[RLMRealmConfiguration alloc] init];
configuration.fileURL = local;
configuration.dynamic = true;
configuration.readOnly = YES;
RLMRealm *localRealm = [RLMRealm realmWithConfiguration:configuration error:nil];
RLMSyncCredentials *credentials = [RLMSyncCredentials credentialsWithUsername:username password:password register:YES];
[RLMSyncUser logInWithCredentials:credentials authServerURL:server onCompletion:^(RLMSyncUser *syncUser, NSError *error) {
if (error) {
completion(error);
return;
}
dispatch_async(dispatch_get_main_queue(), ^{
RLMRealmConfiguration *syncConfig = [[RLMRealmConfiguration alloc] init];
syncConfig.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:syncUser realmURL:[NSURL URLWithString:[NSString stringWithFormat:@"realm://%@:%@/~/<redacted>", server.host, server.port]]];
syncConfig.customSchema = [localRealm.schema copy];
RLMRealm *syncRealm = [RLMRealm realmWithConfiguration:syncConfig error:nil];
syncRealm.schema = syncConfig.customSchema;
NSError *error = nil;
[syncRealm transactionWithBlock:^{
NSArray *objectSchema = syncConfig.customSchema.objectSchema;
for (RLMObjectSchema *schema in objectSchema) {
RLMResults *allObjects = [localRealm allObjects:schema.className];
for (RLMObject *object in allObjects) {
RLMCreateObjectInRealmWithValue(syncRealm, schema.className, object, true);
}
}
completion(nil);
} error:&error];
if (error) {
completion(error);
}
});
}];
}
@end
Then add #import "RealmConverter.h"
to your bridging header and then use it in your Swift code like: 然后将#import "RealmConverter.h"
添加到您的桥接头,然后在Swift代码中使用它,如:
RealmConverter().convertLocal(toSyncRealm: URL(string: "http://localhost:9080")!, local: Realm.Configuration.defaultConfiguration.fileURL!, username: "user@example.com", password: "12345678") { error in
print("Done:", error ?? "nil")
}
Have found a port of the function in Swift here: https://github.com/realm/realm-cocoa/issues/538 在Swift中找到了函数的端口: https : //github.com/realm/realm-cocoa/issues/538
import Realm
import Realm.Dynamic
import RealmSwift
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let sourceFilePath = Bundle.main.url(forResource: "fieldFlow", withExtension: "realm")
let configuration = RLMRealmConfiguration()
configuration.fileURL = sourceFilePath
configuration.dynamic = true
configuration.readOnly = true
let localRealm = try! RLMRealm(configuration: configuration)
let creds = SyncCredentials.usernamePassword(username: "admin@realm.io", password: "password")
SyncUser.logIn(with: creds, server: URL(string: "http://localhost:9080")!) { (syncUser, error) in
DispatchQueue.main.async {
if let syncUser = syncUser {
self.copyToSyncRealmWithRealm(realm: localRealm, user: syncUser)
}
}
}
}
func copyToSyncRealmWithRealm(realm: RLMRealm, user: RLMSyncUser) {
let syncConfig = RLMRealmConfiguration()
syncConfig.syncConfiguration = RLMSyncConfiguration(user: user, realmURL: URL(string: "realm://localhost:9080/~/fieldRow")!)
syncConfig.customSchema = realm.schema
let syncRealm = try! RLMRealm(configuration: syncConfig)
syncRealm.schema = syncConfig.customSchema!
try! syncRealm.transaction {
let objectSchema = syncConfig.customSchema!.objectSchema
for schema in objectSchema {
let allObjects = realm.allObjects(schema.className)
for i in 0..<allObjects.count {
let object = allObjects[i]
RLMCreateObjectInRealmWithValue(syncRealm, schema.className, object, true)
}
}
}
}
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