ios - RLM 结果 :allObjects crash (iOS Objective-C)

Question

我有一个用 Objective-C 编写的旧项目。需要迁移到 Realm。

我从 RLMObject 继承了几个对象/类。当我仅使用一种主要对象类型 (ConnectionRealm) 获取对象时 - 工作正常，但如果我确实添加(仅添加，不包括，不使用)以投影两个或更多其他类(继承自RLMObject)，就像 FloorRealm 类一样，APP 在 [ConnectionRealm allObjects] 上崩溃，没有任何错误。

ConnectionRealm 还包含 FloorRealm 的 RLMArray。应用程序仍然崩溃。(这几天无法解决和理解。)谢谢。

连接模型:

#import <Foundation/Foundation.h>
#import <Realm/Realm.h>

#import "FloorRealm.h"

@interface ConnectionRealm : RLMObject

@property int connectionID;

@property NSString *name;

@property NSString *localIPAddress;
@property NSString *localPort;

@property NSString *remoteIPAddress;
@property NSString *remotePort;

@property NSString *userName;
@property NSString *password;

@property NSString *deviceID;

@property RLMArray <FloorRealm *> *floors;

- (instancetype)initWith:(NSString *)name
                 localIP:(NSString *)localIPAddress
               localPort:(NSString *)lPort
                remoteIP:(NSString *)remoteIPAddress
              remotePort:(NSString *)rPort
                userName:(NSString *)userName
                password:(NSString *)password
                deviceID:(NSString *)deviceID;
@end

#import "ConnectionRealm.h"

@implementation ConnectionRealm

- (instancetype)initWith:(NSString *)name
                 localIP:(NSString *)localIPAddress
               localPort:(NSString *)lPort
                remoteIP:(NSString *)remoteIPAddress
              remotePort:(NSString *)rPort
                userName:(NSString *)userName
                password:(NSString *)password
                deviceID:(NSString *)deviceID {

    if (self = [super init]) {

        self.connectionID = [self incrementID];

        self.name = name;

        self.localIPAddress = localIPAddress;
        self.localPort = lPort;

        self.remoteIPAddress = remoteIPAddress;
        self.remotePort = rPort;

        self.userName = userName;
        self.password = password;

        self.deviceID = deviceID;
    }

    return self;
}

+ (NSString *)primaryKey { return @"connectionID"; }

- (int)incrementID {

    RLMResults *objects = [ConnectionRealm allObjects];
    return self.connectionID = [[objects maxOfProperty:@"connectionID"] intValue] + 1;
}

@end

地板模型:

#import <Realm/Realm.h>


@interface FloorRealm : RLMObject

@property int floorID;
@property NSInteger floorNumber;
@property NSString *floorName;

- (instancetype)initWith:(NSInteger)floorNumber floorName:(NSString *)name;

@end
RLM_ARRAY_TYPE(FloorRealm)

#import "FloorRealm.h"

@implementation FloorRealm

- (instancetype)initWith:(NSInteger)floorNumber floorName:(NSString *)name {

    if (self = [super init]) {

        self.floorID = [self incrementID];

        self.floorNumber = floorNumber;
        self.floorName = name;
    }

    return self;
}

+ (NSString *)primaryKey { return @"floorID"; }

- (int)incrementID {

    RLMResults *objects = [FloorRealm allObjects];
    return self.floorID = [[objects maxOfProperty:@"floorID"] intValue] + 1;
}

@end

Answer 1

[已解决]

1. RLM_ARRAY_TYPE(FloorRealm)在#includes 之后需要在 .h 中放入 ConnectionRealm。但在官方文档中又写了另一个。
2. 还有:@property RLMArray <FloorRealm *><FloorRealm> *floors;而不是 @property RLMArray <FloorRealm *> *floors;

我使用相同的模型创建了测试项目并播种了所有错误。奇怪，但在原始项目 Xcode 中没有显示此错误。