Objective c RestKit使用setObjectMapping从核心数据中删除旧数据

Objective c RestKit使用setObjectMapping从核心数据中删除旧数据,objective-c,ios,xml,restkit,Objective C,Ios,Xml,Restkit,我已经在查看了答案,它正在运行,但仅适用于最后一个映射。例如: RKManagedObjectMapping *audioSourcesMapping = [RKManagedObjectMapping mappingForEntityWithName:kEntityAudioSources inManagedObjectStore:objectStore]; [audioSourcesMapping mapKeyPath:@"icon" toAttribute:@"icon"]; [audio

我已经在查看了答案,它正在运行,但仅适用于最后一个映射。例如:

RKManagedObjectMapping *audioSourcesMapping = [RKManagedObjectMapping mappingForEntityWithName:kEntityAudioSources inManagedObjectStore:objectStore];
[audioSourcesMapping mapKeyPath:@"icon" toAttribute:@"icon"];
[audioSourcesMapping mapKeyPath:@"name" toAttribute:@"name"];
[audioSourcesMapping mapKeyPath:@"notes" toAttribute:@"notes"];
[audioSourcesMapping mapKeyPath:@"section" toAttribute:@"section"];
[audioSourcesMapping mapKeyPath:@"url" toAttribute:@"url"];
audioSourcesMapping.primaryKeyAttribute = @"name";
[wsiObjectManager.mappingProvider registerMapping:audioSourcesMapping withRootKeyPath:@"winSystem.winSystemAudioSources.winSystemAudioSource"];


[wsiObjectManager.mappingProvider setObjectMapping:audioSourcesMapping forResourcePathPattern:kWinSystemInfoXml 
                             withFetchRequestBlock:^NSFetchRequest *(NSString *resourcePath) {
                                 return [AudioSources fetchRequest];
                             }];


RKManagedObjectMapping *eventsMapping = [RKManagedObjectMapping mappingForEntityWithName:kEntityEvents inManagedObjectStore:objectStore];
[eventsMapping mapKeyPath:@"contact" toAttribute:@"contact"];
[eventsMapping mapKeyPath:@"startDate" toAttribute:@"startDate"];
[eventsMapping mapKeyPath:@"endDate" toAttribute:@"endDate"];
[eventsMapping mapKeyPath:@"icon" toAttribute:@"icon"];
[eventsMapping mapKeyPath:@"location" toAttribute:@"location"];
[eventsMapping mapKeyPath:@"name" toAttribute:@"name"];
[eventsMapping mapKeyPath:@"notes" toAttribute:@"notes"];
[eventsMapping mapKeyPath:@"section" toAttribute:@"section"];
[eventsMapping mapKeyPath:@"url" toAttribute:@"url"];
eventsMapping.primaryKeyAttribute = @"name";
[wsiObjectManager.mappingProvider registerMapping:eventsMapping withRootKeyPath:@"winSystem.winSystemEvents.winSystemEvent"];    


[wsiObjectManager.mappingProvider setObjectMapping:eventsMapping forResourcePathPattern:kWinSystemInfoXml 
                             withFetchRequestBlock:^NSFetchRequest *(NSString *resourcePath) {
                                 return [Events fetchRequest];
                             }];
所有映射都工作得很好。更新源xml时,将创建新记录。当我删除
事件时,它会被删除。当我删除
音频源时,它不会被删除

如果删除第二个
setObjectMapping:forResourcePathPattern:withFetchRequestBlock
,则
AudioSource
被正确删除,但已删除的
事件
未被正确删除。我在这个xml文件中使用了4个映射

这就像上次调用
setObjectMapping:forResourcePathPattern:withFetchRequestBlock
wins一样

我的解决方法是对最常更改的映射(在本例中为
事件
)使用
setObjectMapping:forResourcePathPattern:withFetchRequestBlock
),并添加一个使缓存无效、清空数据库和更新的按钮。我一定错过了一些简单的东西

Xcode:4.3.3 RestKit:0.10.1

示例xml文件。这一切都可以正常加载,但只会使用最后一个
setObjectMapping:forResourcePathPattern:withFetchRequestBlock从核心数据中删除映射

    <?xml version="1.0" encoding="UTF-8"?>
    <winSystem>
        <winSystemAudioSources>
            <winSystemAudioSource
                icon="audio.png"
                name="Hub Audio"
                notes="Cleaner Sound. Audio is delayed by about 30 seconds. This is a great way to see if you are making into the WIN System."
                section=" WIN System"
                url="http://stream.winsystem.org:443/2560.mp3" />
        </winSystemAudioSources>
        <winSystemEvents>
            <winSystemEvent
                contact=""
                endDate=""
                icon="net.png"
                location="WIN System reflector 9100"
                name="Insomniac Trivia Net"
                notes="Every Night @ 23:00 PT - WIN System reflector 9100. Join the Yahoo! group: http://groups.yahoo.com/group/insomniac-net/join"
                section="Ham Nets"
                startDate=""
                url="http://www.thedeanfamily.com/WinSystem/InsomniacNet.htm" />
        </winSystemEvents>
        <winSystemLinks>
            <winSystemLink
                icon="winsystem.png"
                name=" WIN System Home Page"
                notes="The WIN System Home Page"
                section=" WIN System"
                type="web"
                url="http://www.winsystem.org/" />
        </winSystemLinks>
        <winSystemRepeaters>
            <winSystemRepeater
                callSign="K6JSI"
                freqOffsetPl="448.800* (-) 100.0"
                grouping="winsystem"
                latitudeDefault=""
                locationElevation="Shorty's house, 560' + 53'"
                longitudeDefault=""
                node="A 01330"
                repeaterId="1"
                serviceArea="Vista"
                serviceState="CA" />
        </winSystemRepeaters>
    </winSystem>

我以前没有使用过托管对象,但这里要做的第一件事是通过对象映射、网络请求和核心数据激活restkit日志,以便您可以检查restkit从服务器获取的内容、映射如何工作以及如何从CD获取内容,因此请尝试以下操作:

//This can be added in your app delegate
RKLogConfigureByName("RestKit/Network", RKLogLevelTrace);
RKLogConfigureByName("RestKit/ObjectMapping", RKLogLevelTrace);
RKLogConfigureByName("RestKit/CoreData", RKLogLevelTrace);
查看您的代码,您在这里为两个映射使用相同的路径:

// forResourcePathPattern:kWinSystemInfoXml
[wsiObjectManager.mappingProvider setObjectMapping:audioSourcesMapping forResourcePathPattern:kWinSystemInfoXml 
                         withFetchRequestBlock:^NSFetchRequest *(NSString *resourcePath) {
                             return [AudioSources fetchRequest];
                         }];

// forResourcePathPattern:kWinSystemInfoXml
[wsiObjectManager.mappingProvider setObjectMapping:eventsMapping forResourcePathPattern:kWinSystemInfoXml 
                         withFetchRequestBlock:^NSFetchRequest *(NSString *resourcePath) {
                             return [Events fetchRequest];
                         }];
我认为这可能会导致冲突,因为RK选择两种资源中的一种映射到该路径,因此您应该:

  • 调试核心数据正在做什么
  • 尝试使用关键路径的映射方法而不是资源路径模式,这样RK就不会混乱,您需要定义不同的方法来映射每种对象,现在我认为第一种方法正在被覆盖
  • 如果这不起作用,您应该发布如何删除代码中的内容,也许可以发布视图控制器中的所有代码。可能发生的情况是调用正在被代码覆盖。你在用积木吗


    希望有帮助

    您的源XML看起来像什么?它是否有,并且都是嵌套标记?@Steven Hepting-我已经编辑了这个问题,添加了一个xml文件示例。谢谢你的邀请!你是怎么删除东西的?你能加上那个代码吗?可能有一个呼叫被覆盖了。请检查我的响应,以便调试核心数据的行为。@clopez-如果我删除其中一个xml元素-例如,一个的。并添加一些新的。添加了新的,但删除的仍在核心数据中。我有日志消息输出。我不从代码中删除。当我编辑xml并删除元素时,在下一次更新时,应该删除元素。它适用于最后一个
    映射提供程序
    。我使用的唯一块位于上面的
    withFetchRequestBlock
    中。我将研究关键方法的映射并返回结果。谢谢。当您执行这些操作时,核心数据日志的输出是什么?