Question

您好我有以下格式的JSON：

{
"entityList": [
    {
     "type": "Author",
     "code" : "XYZ"
       "Books": [
       {
         "id": 10,
    "name": "book1"
         "publisher": {
           "code": "ABC"
            }
       }
     ],
   }
]
}

这些是诱惑

@interface Author :NSManagedObject

@property (nonatomic, retain) NSString * type;
@property (nonatomic, retain) NSString * code;
@property (nonatomic, retain) NSArray* Books;

@end

@interface Book :NSManagedObject

@property (nonatomic, retain) NSNumber * id;
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) Publisher* publisher;

@end


@interface Publisher :NSManagedObject

@property (nonatomic, retain) NSString * code;

@end

这是映射

 RKEntityMapping* Authormapping = [RKEntityMapping mappingForEntityForName:@"Author" inManagedObjectStore:[RKObjectManager sharedManager].managedObjectStore];

    // setup the identification Attribute
    Authormapping.identificationAttributes = @[@"code"];
    // set up the attribute mapping

    [Authormapping addAttributeMappingsFromDictionary:@{@"code":@"code",@"Books":@"Books"
}];

RKEntityMapping* Bookmapping = [RKEntityMapping mappingForEntityForName:@"Book" inManagedObjectStore:[RKObjectManager sharedManager].managedObjectStore];
Bookmapping.identificationAttributes = @[@"id"];
    // set up the attribute mapping

    [Bookmapping addAttributeMappingsFromDictionary:@{@"id":@"id"
[l_mapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"publisher"
                                                                              toKeyPath:@"publisher"                                        withMapping:[Publisher getMappingForRelationship]]];

这只是拥有一系列词典的书籍，我无法弄清楚如何让NsArray包含Book entites的对象。非常感谢您的帮助。

@wain：当我在核心数据中建立关系时，该类变为

@interface Author :NSManagedObject

@property (nonatomic, retain) NSString * type;
@property (nonatomic, retain) NSString * code;
@property (nonatomic, retain) Book* Books;

@end

然后我使用关系船映射来映射书籍。但那时它只会是一本书。我无法看到我将如何将Books设置为NSSet * / NSArray *，并将其声明为Core数据中作者的关系。我不知道如何设置映射。如果不是太麻烦，请你给一个代码示例。非常感谢你。

Answer 1

很抱歉没有立即回复。 Wain的解决方案是正确的。我错过链接的原因是因为一个svn问题，在我的旧文件中仍然出现，所以所有核心数据生成的方法和NSSet都丢失了。对于那些不熟悉RestKit /核心数据并遇到此问题的人。如果您有要映射的核心数据实体的对象的嵌套数组，则生成一个＆＃34;一对多＆＃34;关系。并请确保您重新生成课程。最好的是删除旧的。

Rest Kit实体映射嵌套数组

1 个答案: