我正在使用AFIncrementalStore从Web服务中获取数据，并通过应用程序启动将其保存在SQLite数据库中。
该Web服务不遵循REST标准，因此我不能使用AFRestClient，但是有一个实现AFHTTPClient的AFIncrementalStoreHTTPClient子类。
所有这些都适用于第一级数据，但是我正在处理的响应还包含带有其他对象的数组:
[
{
"PID": 6,
"Actors": [
{
"PID": 0,
"Name": "Kiefer Sutherland"
},
{
"PID": 0,
"Name": "Carlos Bernard"
},
{
"PID": 0,
"Name": "Mary Lynn Rajskub"
},
{
"PID": 0,
"Name": "Jude Ciccolella"
},
{
"PID": 0,
"Name": "Glenn Morshower"
},
{
"PID": 0,
"Name": "Tanya Wright"
},
{
"PID": 0,
"Name": "Alberta Watson"
},
{
"PID": 0,
"Name": "Eric Balfour"
},
{
"PID": 0,
"Name": "Regina King"
},
{
"PID": 0,
"Name": "Peter MacNicol"
},
{
"PID": 0,
"Name": "Marisol Nichols"
},
{
"PID": 0,
"Name": "Jayne Atkinson"
},
{
"PID": 0,
"Name": "Carlo Rota"
},
{
"PID": 0,
"Name": "Janeane Garofalo"
},
{
"PID": 0,
"Name": "Rhys Coiro"
},
{
"PID": 0,
"Name": "Jeffrey R. Nordling"
},
{
"PID": 0,
"Name": "Bob Gunton"
},
{
"PID": 0,
"Name": "Colm Feore"
},
{
"PID": 0,
"Name": "Annie Wersching"
},
{
"PID": 0,
"Name": "Cherry Jones"
},
{
"PID": 0,
"Name": "D.B. Woodside"
},
{
"PID": 0,
"Name": "James Morrison"
},
{
"PID": 0,
"Name": "Gregory Itzin"
},
{
"PID": 0,
"Name": "Jean Smart"
},
{
"PID": 0,
"Name": "Louis Lombardi"
},
{
"PID": 0,
"Name": "Sarah Clarke"
},
{
"PID": 0,
"Name": "Roger R. Cross"
},
{
"PID": 0,
"Name": "Reiko Aylesworth"
},
{
"PID": 0,
"Name": "Elisha Cuthbert"
},
{
"PID": 0,
"Name": "Lana Parrilla"
},
{
"PID": 0,
"Name": "Kim Raver"
},
{
"PID": 0,
"Name": "Dennis Haysbert"
},
{
"PID": 0,
"Name": "Leslie Hope"
},
{
"PID": 0,
"Name": "Xander Berkeley"
},
{
"PID": 0,
"Name": "James Badge Dale"
},
{
"PID": 0,
"Name": "Penny Johnson Jerald"
},
{
"PID": 0,
"Name": "Sarah Wynter"
},
{
"PID": 0,
"Name": "Shohreh Aghdashloo"
},
{
"PID": 0,
"Name": "Laura Harris"
},
{
"PID": 0,
"Name": "David Anders"
},
{
"PID": 0,
"Name": "Katee Sackhoff"
},
{
"PID": 0,
"Name": "Mykelti Williamson"
},
{
"PID": 0,
"Name": "Anil Kapoor"
},
{
"PID": 0,
"Name": "Chris Diamantopoulos"
},
{
"PID": 0,
"Name": "John Boyd"
},
{
"PID": 0,
"Name": "Freddie Prinze Jr."
}
],
"Artwork": [
{
"Filetype": "jpg",
"Id": "291317649",
"Offset": 0,
"Rating": 1,
"Type": 2
},
{
"Filetype": "jpg",
"Id": "-419936433",
"Offset": 1,
"Rating": 1,
"Type": 2
},
{
"Filetype": "jpg",
"Id": "-431274161",
"Offset": 2,
"Rating": 1,
"Type": 2
},
{
"Filetype": "jpg",
"Id": "117154410",
"Offset": 0,
"Rating": 1,
"Type": 3
},
{
"Filetype": "jpg",
"Id": "1179197275",
"Offset": 1,
"Rating": 1,
"Type": 3
},
{
"Filetype": "jpg",
"Id": "-1912564655",
"Offset": 2,
"Rating": 1,
"Type": 3
},
{
"Filetype": "jpg",
"Id": "885093068",
"Offset": 0,
"Rating": 1,
"Type": 1
}
],
"ContentRating": "TV-14",
"DateAdded": "/Date(-3600000+0100)/",
"EpisodeCount": 192,
"ExternalId": [
{
"Id": "76290",
"Site": "TVDB"
},
{
"Id": "tt0285331",
"Site": "IMDB"
}
],
"Genres": [
"Action and Adventure",
"Drama"
],
"Id": "76290",
"IsProtected": false,
"Rating": 8.9,
"Title": "24",
"UnwatchedEpisodeCount": 0,
"Year": 2001
}
]
在我的数据模型中，我有一个实体
TVShow，它具有ID，等级，标题，未观看的剧集，剧集计数和年份的属性。我正在将这些映射到我的HTTPClient中attributesForRepresentation:ofEntity:fromResponse:像这样:if ([entity.name isEqualToString:@"TVShow"]) {
[mutableAttributes setValue:[representation valueForKey:@"Id"] forKey:@"showId"];
[mutableAttributes setValue:[representation valueForKey:@"Title"] forKey:@"title"];
[mutableAttributes setValue:[NSNumber numberWithInteger:[[representation valueForKey:@"Year"] integerValue]] forKey:@"year"];
[mutableAttributes setValue:[NSNumber numberWithInteger:[[representation valueForKey:@"EpisodeCount"] integerValue]] forKey:@"episodeCount"];
[mutableAttributes setValue:[NSNumber numberWithInteger:[[representation valueForKey:@"UnwatchedEpisodeCount"] integerValue]] forKey:@"unwatchedEpisodeCount"];
}
我的想法是我可以添加另一个实体
Artwork，它在TVShow和Artwork之间具有一对多的关系，但是我不知道如何映射和定义它。最近几天我的所有尝试都导致崩溃(可能是由于对CoreData缺乏了解)。对此的任何帮助将不胜感激，因为我真的很想在我的应用程序中使用AFIS。
谢谢!
最佳答案
(第一部分并不是真正的答案)
除非您非常了解Core Data，否则我不建议使用NSIncrementalStore。只需使用例如AFNetwork，然后将这些对象插入由SQLite存储支持的普通Core Data堆栈中。您可能会发现一个更可行的解决方案。
(第二部分)
就是说，您可以使用它，但是您必须做一些技巧，因为对于Artwork对象，它没有任何id或其他唯一标识符。您必须将放入缓存(AFIncrementalStore使用的第二个核心数据堆栈)，然后将这些对象的NSManagedObjectIDs放入该关系的TVShow值中。
关于iphone - AFIncrementalStore处理具有关系的非静止响应，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/13035815/