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Делегат RestKit loadObjectsAtResourcePath :работает один раз, но больше никогда

Я новичок в Objective -C и XCode, но еще новичок в RestKit, хотя программирую на Java уже 12 лет.

У меня есть приложение IOS, подключенное к RestKit, и действие для загрузки с сервера отдыха работает только в первый раз, если я вернусь в навигационный контроллер и повторю ту же операцию снова, метод loadObjectsAtResourcePath:delegateвызывается, но ни один из когда-либо вызываются методы делегата (, и я реализовал их все только для того, чтобы регистрировать, когда они происходят ).

Я чувствую, что упустил что-то фундаментальное с Restkit и, возможно, его асинхронную природу, потому что сопоставление явно работает нормально в первый раз, поэтому последующий вызов должен потеряться в асинхронной очереди.

Я гуглил это и видел, как похожие люди застряли с чем-то похожим, но попробовал их всех и, похоже, не имеет значения. Кэширование отключено, objectLoaderDidLoadUnexpectedResponseи didFailWithErrorникогда не вызываются, их бросают на пол.

Источник кода:

Мой проект XCode находится на github здесь

Конкретный контроллер представления, выполняющий вызов загрузки, здесь(см. метод setUpRestKit)

Последовательность вызовов выглядит следующим образом:

  • Пользователь заполняет имя хоста и порт,и нажимает подключить
  • ESRKConnectionViewController.m получает вызов через prepareForSegue и устанавливает общий RKClient с этим адресом (, хотя позже я узнаю, что RKClient мало используется, RKOBjectManager, кажется, принимает только базовый URL, так что там немного избыточно)
  • Затем ESRKServerViewController.m устанавливает сопоставление в RKObjectManager и вызывает loadObjectsAtResourcePath , передавая себя в качестве делегата (да, я понимаю, что, вероятно, эти сопоставления должны быть настроены в начале в App Delegate, но я не могу понять, как повторная настройка может быть чем-то большим, чем просто избыточный код)
  • затем обратный вызов objectLoader :didLoadObjects отвечает за получение сопоставленного объекта и настройку модели для табличного представления -, он запускается только один раз.

Включение журналов, это шаблон, который я вижу, с аннотациями о том, когда завершается первый вызов, когда начинается второй и т. д. (временные метки обрезаны для ясности здесь):

ElasticSearchHeadIOS[25064:fb03] I restkit:RKLog.m:32 RestKit initialized...
ElasticSearchHeadIOS[25064:fb03] I restkit.support:RKCache.m:178 Invalidating cache at path: /Users/paulsmith/Library/Application Support/iPhone Simulator/5.1/Applications/BDB8B59F-8307-4F18-A4E7-C55849618D77/Library/Caches/RKClientRequestCache-localhost/SessionStore
ElasticSearchHeadIOS[25064:fb03] I restkit.network.reachability:RKReachabilityObserver.m:155 Reachability observer initialized with hostname localhost
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKClient.m:271 Reachability observer changed for client , suspending queue  until reachability to host 'localhost' can be determined
ElasticSearchHeadIOS[25064:fb03] Connecting to http://localhost:9200/ -- http://localhost:9200/ -- http://localhost:9200/
ElasticSearchHeadIOS[25064:fb03] I restkit.support:RKCache.m:178 Invalidating cache at path: /Users/paulsmith/Library/Application Support/iPhone Simulator/5.1/Applications/BDB8B59F-8307-4F18-A4E7-C55849618D77/Library/Caches/RKClientRequestCache-localhost/SessionStore
ElasticSearchHeadIOS[25064:fb03] I restkit.network.reachability:RKReachabilityObserver.m:155 Reachability observer initialized with hostname localhost
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKClient.m:271 Reachability observer changed for client , suspending queue  until reachability to host 'localhost' can be determined
ElasticSearchHeadIOS[25064:fb03] I restkit.network.reachability:RKReachabilityObserver.m:369 Network availability has been determined for reachability observer 
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKClient.m:401 Reachability to host 'localhost' determined for client , unsuspending queue 
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKRequest.m:435 Sending asynchronous GET request to URL http://localhost:9200/_cluster/state.
ElasticSearchHeadIOS[25064:fb03] T restkit.network:RKRequest.m:381 Prepared GET URLRequest ''. HTTP Headers: {
    Accept = "application/json";
    "Content-Length" = 0;
}. HTTP Body:.
ElasticSearchHeadIOS[25064:fb03] I restkit.network.reachability:RKReachabilityObserver.m:369 Network availability has been determined for reachability observer 
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKClient.m:401 Reachability to host 'localhost' determined for client , unsuspending queue 
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKResponse.m:195 NSHTTPURLResponse Status Code: 200
ElasticSearchHeadIOS[25064:fb03] D restkit.network:RKResponse.m:196 Headers: {
    "Content-Length" = 4462;
    "Content-Type" = "application/json; charset=UTF-8";
}
 ElasticSearchHeadIOS[25064:fb03] T restkit.network:RKResponse.m:203 Read response body: {"cluster_name":"paul","master_node":"FGewvE3-TEKjXugOGJpWmQ","blocks":{},"nodes":{"FGewvE3-TEKjXugOGJpWmQ":{"name":"Namor the Sub-Mariner","transport_address":"inet[/192.168.0.12:9300]","attributes":{}}},"metadata":{"templates":{},"indices":{"melpaul":{"state":"open","settings":{"index.number_of_replicas":"1","index.number_of_shards":"5","index.version.created":"190299"},"mappings":{"project":{"properties":{"projectAddress":{"type":"string"},"id":{"type":"string"},"suburb":{"type":"string"},"name":{"type":"string"},"state":{"type":"string"},"postalAddress":{"type":"string"},"ownerOrganizationID":{"type":"long"},"shortName":{"type":"string"},"deliveryAddress":{"type":"string"},"country":{"type":"string"}}},"organization":{"properties":{"id":{"type":"string"},"tradingName":{"type":"string"},"name":{"type":"string"},"extParticipant":{"type":"string"},"code":{"type":"string"}}},"task":{"properties":{"aggregateCount":{"type":"long"},"dueDateIso":{"type":"string"},"assignedByUser":{"type":"string"},"pertinent":{"type":"boolean"},"assignedByUserId":{"type":"long"},"assignedBy":{"type":"string"},"projectId":{"type":"long"},"type":{"type":"string"},"id":{"type":"string"},"creationDate":{"type":"long"},"assignedToUserId":{"type":"long"},"description":{"type":"string"},"featureId":{"type":"string"},"aggregated":{"type":"boolean"},"assignedToUser":{"type":"string"},"projectName":{"type":"string"},"dueDate":{"type":"long"},"referenceLabel":{"type":"string"}}},"user":{"properties":{"sortlastName":{"type":"string"},"position":{"type":"string"},"lastName":{"type":"string"},"phone":{"type":"string"},"accessEnabled":{"type":"string"},"orgName":{"type":"string"},"directoryVisibility":{"type":"string"},"id":{"type":"string"},"orgId":{"type":"string"},"orgTradingName":{"type":"string"},"title":{"type":"string"},"divisionName":{"type":"string"},"email":{"type":"string"},"sortfirstName":{"type":"string"},"userName":{"type":"string"},"extParticipant":{"type":"string"},"firstName":{"type":"string"},"accountUnlocked":{"type":"string"},"mobile":{"type":"string"}}}},"aliases":[]}}},"routing_table":{"indices":{"melpaul":{"shards":{"0":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":0,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":0,"index":"melpaul"}],"1":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":1,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":1,"index":"melpaul"}],"2":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":2,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":2,"index":"melpaul"}],"3":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":3,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":3,"index":"melpaul"}],"4":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":4,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":4,"index":"melpaul"}]}}}},"routing_nodes":{"unassigned":[{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":0,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":1,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":2,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":3,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":4,"index":"melpaul"}],"nodes":{"FGewvE3-TEKjXugOGJpWmQ":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":0,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":1,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":2,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":3,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":4,"index":"melpaul"}]}},"allocations":[]}
 ElasticSearchHeadIOS[25064:1400b] D restkit.network:RKObjectLoader.m:262 Beginning object mapping activities within GCD queue labeled: org.restkit.ObjectMapping
 ElasticSearchHeadIOS[25064:1400b] D restkit.network:RKObjectLoader.m:250 No object mapping provider, using mapping provider from parent object manager to perform KVC mapping
 ElasticSearchHeadIOS[25064:1400b] T restkit.network:RKObjectLoader.m:187 bodyAsString: {"cluster_name":"paul","master_node":"FGewvE3-TEKjXugOGJpWmQ","blocks":{},"nodes":{"FGewvE3-TEKjXugOGJpWmQ":{"name":"Namor the Sub-Mariner","transport_address":"inet[/192.168.0.12:9300]","attributes":{}}},"metadata":{"templates":{},"indices":{"melpaul":{"state":"open","settings":{"index.number_of_replicas":"1","index.number_of_shards":"5","index.version.created":"190299"},"mappings":{"project":{"properties":{"projectAddress":{"type":"string"},"id":{"type":"string"},"suburb":{"type":"string"},"name":{"type":"string"},"state":{"type":"string"},"postalAddress":{"type":"string"},"ownerOrganizationID":{"type":"long"},"shortName":{"type":"string"},"deliveryAddress":{"type":"string"},"country":{"type":"string"}}},"organization":{"properties":{"id":{"type":"string"},"tradingName":{"type":"string"},"name":{"type":"string"},"extParticipant":{"type":"string"},"code":{"type":"string"}}},"task":{"properties":{"aggregateCount":{"type":"long"},"dueDateIso":{"type":"string"},"assignedByUser":{"type":"string"},"pertinent":{"type":"boolean"},"assignedByUserId":{"type":"long"},"assignedBy":{"type":"string"},"projectId":{"type":"long"},"type":{"type":"string"},"id":{"type":"string"},"creationDate":{"type":"long"},"assignedToUserId":{"type":"long"},"description":{"type":"string"},"featureId":{"type":"string"},"aggregated":{"type":"boolean"},"assignedToUser":{"type":"string"},"projectName":{"type":"string"},"dueDate":{"type":"long"},"referenceLabel":{"type":"string"}}},"user":{"properties":{"sortlastName":{"type":"string"},"position":{"type":"string"},"lastName":{"type":"string"},"phone":{"type":"string"},"accessEnabled":{"type":"string"},"orgName":{"type":"string"},"directoryVisibility":{"type":"string"},"id":{"type":"string"},"orgId":{"type":"string"},"orgTradingName":{"type":"string"},"title":{"type":"string"},"divisionName":{"type":"string"},"email":{"type":"string"},"sortfirstName":{"type":"string"},"userName":{"type":"string"},"extParticipant":{"type":"string"},"firstName":{"type":"string"},"accountUnlocked":{"type":"string"},"mobile":{"type":"string"}}}},"aliases":[]}}},"routing_table":{"indices":{"melpaul":{"shards":{"0":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":0,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":0,"index":"melpaul"}],"1":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":1,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":1,"index":"melpaul"}],"2":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":2,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":2,"index":"melpaul"}],"3":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":3,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":3,"index":"melpaul"}],"4":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":4,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":4,"index":"melpaul"}]}}}},"routing_nodes":{"unassigned":[{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":0,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":1,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":2,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":3,"index":"melpaul"},{"state":"UNASSIGNED","primary":false,"node":null,"relocating_node":null,"shard":4,"index":"melpaul"}],"nodes":{"FGewvE3-TEKjXugOGJpWmQ":[{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":0,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":1,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":2,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":3,"index":"melpaul"},{"state":"STARTED","primary":true,"node":"FGewvE3-TEKjXugOGJpWmQ","relocating_node":null,"shard":4,"index":"melpaul"}]}},"allocations":[]}
 ElasticSearchHeadIOS[25064:1400b]  willMapData
 ElasticSearchHeadIOS[25064:fb03] did finish loading

Итак, табличное представление, показывающее сопоставленные данные, возвращенные из вышеупомянутых вызовов, теперь готово, и я могу правильно видеть результаты на экране.

Я снова нажимаю на навигационный контроллер, снова пытаюсь выполнить тот же запрос, и вот что делают журналы. Журналы здесь начинаются сразу после того, как я нажимаю кнопку подключения и запускаю те же вызовы, что и выше (никаких других журналов не происходит между блоком выше и этим блоком ниже ).

I restkit.support:RKCache.m:178 Invalidating cache at path: /Users/paulsmith/Library/Application Support/iPhone Simulator/5.1/Applications/BDB8B59F-8307-4F18-A4E7-C55849618D77/Library/Caches/RKClientRequestCache-localhost/SessionStore
I restkit.network.reachability:RKReachabilityObserver.m:155 Reachability observer initialized with hostname localhost
D restkit.network:RKClient.m:271 Reachability observer changed for client , suspending queue  until reachability to host 'localhost' can be determined
D restkit.network:RKClient.m:256 Reachability observer changed for RKClient , disposing of previous instance: 
Connecting to http://localhost:9200/ -- http://localhost:9200/ -- http://localhost:9200/
I restkit.support:RKCache.m:178 Invalidating cache at path: /Users/paulsmith/Library/Application Support/iPhone Simulator/5.1/Applications/BDB8B59F-8307-4F18-A4E7-C55849618D77/Library/Caches/RKClientRequestCache-localhost/SessionStore
I restkit.network.reachability:RKReachabilityObserver.m:155 Reachability observer initialized with hostname localhost
D restkit.network:RKClient.m:271 Reachability observer changed for client , suspending queue  until reachability to host 'localhost' can be determined
D restkit.network:RKClient.m:256 Reachability observer changed for RKClient , disposing of previous instance: 
I restkit.network.reachability:RKReachabilityObserver.m:369 Network availability has been determined for reachability observer 
D restkit.network:RKClient.m:401 Reachability to host 'localhost' determined for client , unsuspending queue

Вот Скриншот Jing того, как это выглядит в симуляторе (вы можете увидеть точки останова методов делегата, которые вызываются в первый раз, но ничего не происходит во второй раз)

23
задан Chris 22 May 2013 в 14:04
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