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added reachability support at the manager and client level; added code to short circuit requests if offline; fixed issue with source parameter on loader related to passing managed objects across thread boundaries; added resource path property to the loader

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This commit is contained in:
Jeff Arena
2010-11-30 19:38:27 -08:00
parent c19d305b45
commit 39f3d568e2
15 changed files with 397 additions and 84 deletions
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81
Code/Three20/RKRequestTTModel.m
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@@ -134,8 +134,7 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
}
- (BOOL)isOutdated {
return ([[RKObjectManager sharedManager] isOnline] && ![self isLoading] &&
(-[self.loadedTime timeIntervalSinceNow] > _refreshRate));
return (![self isLoading] && (-[self.loadedTime timeIntervalSinceNow] > _refreshRate));
}
- (void)cancel {
@@ -177,11 +176,11 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
[_objectLoader release];
_objectLoader = nil;
}
// if ([self errorWarrantsOptionToGoOffline:error]) {
// [self showAlertWithOptionToGoOfflineForError:error];
// } else {
if ([self errorWarrantsOptionToGoOffline:error]) {
[self showAlertWithOptionToGoOfflineForError:error];
} else {
[self didFailLoadWithError:error];
// }
}
}
- (void)objectLoaderDidLoadUnexpectedResponse:(RKObjectLoader*)objectLoader {
@@ -217,38 +216,38 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
[[NSUserDefaults standardUserDefaults] setObject:[NSDate date] forKey:_resourcePath];
}
//- (BOOL)errorWarrantsOptionToGoOffline:(NSError*)error {
// switch ([error code]) {
// case NSURLErrorTimedOut:
// case NSURLErrorCannotFindHost:
// case NSURLErrorCannotConnectToHost:
// case NSURLErrorNetworkConnectionLost:
// case NSURLErrorDNSLookupFailed:
// case NSURLErrorNotConnectedToInternet:
// case NSURLErrorInternationalRoamingOff:
// return YES;
// break;
// default:
// return NO;
// break;
// }
//}
//
//- (void)showAlertWithOptionToGoOfflineForError:(NSError*)error {
// UIAlertView* alert = [[[UIAlertView alloc] initWithTitle:TTLocalizedString(@"Network Error", @"")
// message:[error localizedDescription]
// delegate:self
// cancelButtonTitle:TTLocalizedString(@"OK", @"")
// otherButtonTitles:TTLocalizedString(@"Go Offline", @""), nil] autorelease];
// [alert show];
//}
//
//- (void)alertView:(UIAlertView*)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
// // Go Offline button
// if (1 == buttonIndex) {
// [[RKObjectManager sharedManager] goOffline];
// }
//}
- (BOOL)errorWarrantsOptionToGoOffline:(NSError*)error {
switch ([error code]) {
case NSURLErrorTimedOut:
case NSURLErrorCannotFindHost:
case NSURLErrorCannotConnectToHost:
case NSURLErrorNetworkConnectionLost:
case NSURLErrorDNSLookupFailed:
case NSURLErrorNotConnectedToInternet:
case NSURLErrorInternationalRoamingOff:
return YES;
break;
default:
return NO;
break;
}
}
- (void)showAlertWithOptionToGoOfflineForError:(NSError*)error {
UIAlertView* alert = [[[UIAlertView alloc] initWithTitle:TTLocalizedString(@"Network Error", @"")
message:[error localizedDescription]
delegate:self
cancelButtonTitle:TTLocalizedString(@"OK", @"")
otherButtonTitles:TTLocalizedString(@"Go Offline", @""), nil] autorelease];
[alert show];
}
- (void)alertView:(UIAlertView*)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
// Go Offline button
if (1 == buttonIndex) {
[[RKObjectManager sharedManager] goOffline];
}
}
- (void)modelsDidLoad:(NSArray*)models {
[models retain];
@@ -265,7 +264,6 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
// public
- (void)load {
BOOL isOnline = [[RKObjectManager sharedManager] isOnline];
RKManagedObjectStore* store = [RKObjectManager sharedManager].objectStore;
NSArray* cacheFetchRequests = nil;
NSArray* cachedObjects = nil;
@@ -274,8 +272,7 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
cachedObjects = [RKManagedObject objectsWithFetchRequests:cacheFetchRequests];
}
if (isOnline && (!store.managedObjectCache || !cacheFetchRequests || _cacheLoaded || [cachedObjects count] == 0)) {
if (!store.managedObjectCache || !cacheFetchRequests || _cacheLoaded || [cachedObjects count] == 0) {
_objectLoader = [[[RKObjectManager sharedManager] objectLoaderWithResourcePath:_resourcePath delegate:self] retain];
_objectLoader.method = self.method;
_objectLoader.objectClass = _objectClass;
@@ -283,13 +280,11 @@ static NSString* const kDefaultLoadedTimeKey = @"RKRequestTTModelDefaultLoadedTi
_objectLoader.params = self.params;
[self didStartLoad];
[_objectLoader send];
} else if (cacheFetchRequests && !_cacheLoaded) {
_cacheLoaded = YES;
[self modelsDidLoad:cachedObjects];
}
}