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XMPPvCardCoreDataStorage.m
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XMPPvCardCoreDataStorage.m
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//
// XMPPvCardCoreDataStorage.m
// XEP-0054 vCard-temp
//
// Originally created by Eric Chamberlain on 3/18/11.
//
#import "XMPPvCardCoreDataStorage.h"
#import "XMPPvCardCoreDataStorageObject.h"
#import "XMPPvCardTempCoreDataStorageObject.h"
#import "XMPPvCardAvatarCoreDataStorageObject.h"
#import "XMPP.h"
#import "XMPPCoreDataStorageProtected.h"
#import "XMPPLogging.h"
#if ! __has_feature(objc_arc)
#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
#endif
// Log levels: off, error, warn, info, verbose
#if DEBUG
static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN; // | XMPP_LOG_FLAG_TRACE;
#else
static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN;
#endif
enum {
kXMPPvCardTempNetworkFetchTimeout = 10,
};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark -
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@implementation XMPPvCardCoreDataStorage
static XMPPvCardCoreDataStorage *sharedInstance;
+ (XMPPvCardCoreDataStorage *)sharedInstance
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[XMPPvCardCoreDataStorage alloc] initWithDatabaseFilename:nil];
});
return sharedInstance;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark Setup
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (BOOL)configureWithParent:(XMPPvCardTempModule *)aParent queue:(dispatch_queue_t)queue
{
return [super configureWithParent:aParent queue:queue];
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark Overrides
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (BOOL)addPersistentStoreWithPath:(NSString *)storePath error:(NSError **)errorPtr
{
BOOL result = [super addPersistentStoreWithPath:storePath error:errorPtr];
if (!result &&
[*errorPtr code] == NSMigrationMissingSourceModelError &&
[[*errorPtr domain] isEqualToString:NSCocoaErrorDomain]) {
// If we get this error while trying to add the persistent store, it most likely means the model changed.
// Since we are caching capabilities, it is safe to delete the persistent store and create a new one.
if ([[NSFileManager defaultManager] fileExistsAtPath:storePath])
{
[[NSFileManager defaultManager] removeItemAtPath:storePath error:nil];
// Try creating the store again, without creating a deletion/creation loop.
result = [super addPersistentStoreWithPath:storePath error:errorPtr];
}
}
return result;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark XMPPvCardAvatarStorage protocol
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (NSData *)photoDataForJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
__block NSData *result;
[self executeBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
result = vCard.photoData;
}];
return result;
}
- (NSString *)photoHashForJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
__block NSString *result;
[self executeBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
result = vCard.photoHash;
}];
return result;
}
- (void)clearvCardTempForJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
[self scheduleBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
vCard.vCardTemp = nil;
vCard.lastUpdated = [NSDate date];
}];
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark XMPPvCardTempModuleStorage protocol
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (XMPPvCardTemp *)vCardTempForJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
__block XMPPvCardTemp *result;
[self executeBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
result = vCard.vCardTemp;
}];
return result;
}
- (void)setvCardTemp:(XMPPvCardTemp *)vCardTemp forJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
[self scheduleBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
vCard.waitingForFetch = [NSNumber numberWithBool:NO];
vCard.vCardTemp = vCardTemp;
// Update photo and photo hash
vCard.photoData = vCardTemp.photo;
vCard.lastUpdated = [NSDate date];
}];
}
- (BOOL)shouldFetchvCardTempForJID:(XMPPJID *)jid xmppStream:(XMPPStream *)stream
{
// This is a public method.
// It may be invoked on any thread/queue.
XMPPLogTrace();
__block BOOL result;
[self executeBlock:^{
XMPPvCardCoreDataStorageObject *vCard;
vCard = [XMPPvCardCoreDataStorageObject fetchOrInsertvCardForJID:jid
inManagedObjectContext:[self managedObjectContext]];
BOOL waitingForFetch = [vCard.waitingForFetch boolValue];
if (!waitingForFetch)
{
vCard.waitingForFetch = [NSNumber numberWithBool:YES];
vCard.lastUpdated = [NSDate date];
result = YES;
}
else if ([vCard.lastUpdated timeIntervalSinceNow] < -kXMPPvCardTempNetworkFetchTimeout)
{
// Our last request exceeded the timeout, send a new one
vCard.lastUpdated = [NSDate date];
result = YES;
}
else
{
// We already have an outstanding request, no need to send another one.
result = NO;
}
}];
return result;
}
@end