ScheduleRequest with completionHandler

ScheduleRequest with completionHandler.m

- (void) scheduleRequest:(id<SODataRequestParam>)request completionHandler:(void(^)(NSArray *entities, id<SODataRequestExecution>requestExecution, NSError *error))completion
    
    NSString *finishedSubscription = [NSString stringWithFormat:@"%@.%@", kRequestDelegateFinished, request];
    
    [[NSNotificationCenter defaultCenter] addObserverForName:finishedSubscription 
						      object:nil 
						       queue:[NSOperationQueue mainQueue] 
						  usingBlock:^(NSNotification *note) {
													  
	    id<SODataRequestExecution>requestExecution = note.object;
	    id<SODataResponse> response = requestExecution.response;
	    id<SODataResponseSingle> respSingle = (id<SODataResponseSingle>) response;
	    id<SODataPayload> p = respSingle.payload;

	    SODataEntitySetDefault *entities = (id<SODataEntitySet>)p;
	        
	    // return (NSArray *entities, id<SODataRequestExecution>requestExecution, NSError *error)
	    completion(entities.entities, requestExecution, nil);
	}];
	
	[self.store scheduleRequest:request delegate:self];
}

- (void) requestFinished:(id<SODataRequestExecution>)requestExecution
{
    // build notification tag for this request
    NSString *finishedSubscription = [NSString stringWithFormat:@"%@.%@", kRequestDelegateFinished, requestExecution.request];
    
    // send notification for the finished request
    [[NSNotificationCenter defaultCenter] postNotificationName:finishedSubscription object:requestExecution];
}