在 iOS 上打开多个领域文件

Posted 2023-03-11

【中文标题】在 iOS 上打开多个领域文件

【英文标题】：Multiple Realm File opened on iOS

【发布时间】：2017-06-16 08:39:06

【问题描述】：

当用户可以保存他们的心电图时，我有一个应用程序。我想按用户拆分 Realm 使用情况。我正在开发一个user.realm（引用为_realmUsers）来保存所有登录应用程序的用户，以及一个userID.realm（引用为_realm，它们将是每个登录应用程序的用户一次）其中用户保存他的数据。如何做到这一点？因为如果我写像

这样的东西

两个领域的初始化

+ (void)initializeRealmForUsers

    // Open the encrypted Realm file
    RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
    config.fileURL = [[[config.fileURL URLByDeletingLastPathComponent]
                       URLByAppendingPathComponent:USER_REALM]
                      URLByAppendingPathExtension:@"realm"];

    NSError *err;
    RLMRealm *realmUser = [RLMRealm realmWithConfiguration:config error:&err];
    if(err == nil && realmUser != nil)
        [sharedInstance setRealmUsers:realmUser];


+ (void)initializeDataRealmWithUserID:(NSString*)userUUID

    // Open the encrypted Realm file
    RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
    config.fileURL = [[[config.fileURL URLByDeletingLastPathComponent]
                       URLByAppendingPathComponent:userUUID]
                      URLByAppendingPathExtension:@"realm"];

    NSError *err;
    RLMRealm *realmUser = [RLMRealm realmWithConfiguration:config error:&err];
    if(err == nil && realmUser != nil)
        [sharedInstance setRealmUsers:realmUser];

    [[RealmManager sharedInstance] deleteIncompleteExam];

创建用户：

- (User *)createUserWithData:(NSDictionary *)data

    [_realmUsers beginWriteTransaction];

    User *newUser = [User new];
    [newUser setEmail:[data objectForKey:USER_EMAIL]];
    [newUser setPassword:[CryptoUtils MD5String:[data 
    objectForKey:USER_PASSWORD]]];
    [newUser setLogged:@NO];

    [_realmUsers addOrUpdateObject:newUser];
    [_realmUsers commitWriteTransaction];

    return newUser;

创建患者，第二领域的记录类型（特定用户）：

- (Patient *)createPatientWithData:(NSDictionary *)data forUser:(BOOL)forUser

    Patient *newPatient;
    if([[RealmManager sharedInstance] getSelfPatient] == nil)
        newPatient = [Patient new];
    else
        newPatient = [[RealmManager sharedInstance] getSelfPatient];

    [_realm beginWriteTransaction];
    [newPatient setFirstName:[data objectForKey:PATIENT_FIRSTNAME]];
    [newPatient setLastName:[data objectForKey:PATIENT_LASTNAME]];
    [newPatient setSelfPatient:forUser];
    [_realm addOrUpdateObject:newPatient];
    [_realm commitWriteTransaction];

    return newPatient;

并登录：

- (User *)loginWithUsername:(NSString *)email password:(NSString *)password andData:(NSDictionary *)userData

    User *user = [self userWithUsername:email];
    if(user == nil)
        NSMutableDictionary *mutableData = [NSMutableDictionary new];
        [mutableData addEntriesFromDictionary:userData];
        [mutableData setObject:password forKey:USER_PASSWORD];
        user = [self createUserWithData:mutableData];
     else
        [_realmUsers beginWriteTransaction];
        [user setPassword:[CryptoUtils MD5String:password]];
        [_realmUsers commitWriteTransaction];
    

    [_realmUsers beginWriteTransaction];
    [user setLogged:@YES];
    [_realmUsers commitWriteTransaction];

    [RealmManager initializeDataRealmWithUserID:[user uuid]];
    [self createPatientWithData:@PATIENT_FIRSTNAME : [userData objectForKey:PATIENT_FIRSTNAME], PATIENT_LASTNAME : [userData objectForKey:PATIENT_LASTNAME] forUser:YES];

    return user;

登录后，我的 Calls Like [User allObjects]（用户必须在 user.realm）[Patient allObject]（患者必须在 userID.realm）给我空结果。

【参考方案1】：

您可以通过以下方式访问来自不同领域的数据

[User allObjectsInRealm: user.realm]

[User objectsInRealm:user.realm where:@""];

【讨论】：

谢谢。这就是解决方案。

快乐编码:)