Core data helpers to log errors and changes to a context (using NSLogger)

NSManagedObjectContext+FP.m

- (void)logDetailedError:(NSError *)error from:(id)caller selector:(SEL)selector
{
#if DEBUG
	LogMessage(@"coredata", 0, @"*** CORE DATA ERROR: a data store operation failed");
	LogMessage(@"coredata", 0, @"*** Caller was: %@ %p %@", [caller class], caller, NSStringFromSelector(selector));
	LogMessage(@"coredata", 0, @"*** Error: %@", [error localizedDescription]);
	NSArray* detailedErrors = [[error userInfo] objectForKey:NSDetailedErrorsKey];
	if ([detailedErrors count] > 0)
	{
		for(NSError* detailedError in detailedErrors)
			LogMessage(@"coredata", 0, @">  DetailedError: %@", [detailedError userInfo]);
	}
	else
	{
		LogMessage(@"coredata", 0, @"  %@", [error userInfo]);
	}
#endif
}

- (void)logContextChanges
{
#if DEBUG
	// Log the current changes for the context
	if (![self hasChanges])
		return;

	LogMessage(@"coredata", 1, @"***************************************************");
	LogMessage(@"coredata", 1, @"* CHANGES TO %@ %p", [self class], self);
	LogMessage(@"coredata", 1, @"***************************************************");
	NSSet *updated = [self updatedObjects];
	NSSet *inserted = [self insertedObjects];
	NSSet *deleted = [self deletedObjects];
	if ([updated count])
	{
		LogMessage(@"coredata", 0, @"* UPDATED OBJECTS:");
		for (NSManagedObject *anObject in [self updatedObjects])
		{
			LogMessage(@"coredata", 0, @"* %@ %p has the following changes:", [anObject class], anObject);
			NSDictionary *changedValues = [anObject changedValues];
			NSArray *keys = [changedValues allKeys];
			NSDictionary *oldValues = [anObject committedValuesForKeys:keys];
			for (NSString *key in keys)
				LogMessage(@"coredata", 0, @"  Attribute '%@' was {%@} is now {%@}", key, [oldValues objectForKey:key], [changedValues objectForKey:key]);
			LogMessage(@"coredata", 0, @"*");
		}
	}
	if ([inserted count])
	{
		if ([updated count])
			LogMessage(@"coredata", 0, @"***************************************************");
		LogMessage(@"coredata", 0, @"* INSERTED OBJECTS:");
		for (NSManagedObject *anObject in [self insertedObjects])
		{
			LogMessage(@"coredata", 0, @"* %@", anObject);
			LogMessage(@"coredata", 0, @"*");
		}
	}
	if ([deleted count])
	{
		if ([updated count] || [inserted count])
			LogMessage(@"coredata", 0, @"***************************************************");
		LogMessage(@"coredata", 0, @"* DELETED OBJECTS:");
		for (NSManagedObject *anObject in [self deletedObjects])
		{
			LogMessage(@"coredata", 0, @"* %@", anObject);
			LogMessage(@"coredata", 0, @"*");
		}
	}
	LogMessage(@"coredata", 0, @"***************************************************");
#endif
}