Compare Values of Database and Json and display result - ios

Question

I am creating a table with multiple columns. In the left column I want to get the indicator name which is stored in a database and I have to check that the indicator id in database and in json (API) matches and then display the name in that column. I have tried some code
In view load method I take values from database and store it in an array
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
appDelegate = (AppDelegate *) [[UIApplication sharedApplication] delegate];
indicatorName = [[NSMutableArray alloc] init];
NSString *path = appDelegate.databasePath;
FMDatabase *db = [[FMDatabase alloc] initWithPath:path];
[db open];
NSString *sql = [NSString stringWithFormat:#"SELECT * FROM Topic AS t INNER JOIN TopicIndicators AS ti ON t.Id = ti.TopicId INNER JOIN Indicators AS i ON ti.IndicatorID = i.Id"];// WHERE t.Id = %ld", (long)self.Tid];
FMResultSet *fresult = [db executeQuery:sql];
while ([fresult next])
{
TopicModel *topicModel = [[TopicModel alloc]init];
topicModel.TId = [fresult intForColumn:#"Id"];
topicModel.TTopicType = [fresult stringForColumn:#"TopicType"];
topicModel.TCode = [fresult stringForColumn:#"Code"];
topicModel.TName = [fresult stringForColumn:#"Name"];
topicModel.IId = [fresult intForColumn:#"Id"];
topicModel.ICodeId = [fresult stringForColumn:#"CodeId"];
topicModel.IName = [fresult stringForColumn:#"Name"];
topicModel.INotes = [fresult stringForColumn:#"Notes"];
topicModel.TIId = [fresult intForColumn:#"Id"];
topicModel.TITopicId = [fresult intForColumn:#"TopicId"];
topicModel.TIIndicatorID = [fresult intForColumn:#"IndicatorId"];
[indicatorName addObject:topicModel];
}
[db close];
mainTableData = [[NSMutableArray alloc] init];
[self callPages];
self.title = NSLocalizedString(#"Compare By", nil);
XCMultiTableView *tableView = [[XCMultiTableView alloc] initWithFrame:CGRectInset(self.view.bounds, 5.0f, 5.0f)];
tableView.leftHeaderEnable = YES;
tableView.datasource = self;
[self.view addSubview:tableView];
}
In request finished method I am taking values from json and assigning the values in appropriate columns.
-(void) requestFinished: (ASIHTTPRequest *) request
{
NSString *theJSON = [request responseString];
SBJsonParser *parser = [[SBJsonParser alloc] init];
NSMutableArray *jsonDictionary = [parser objectWithString:theJSON error:nil];
headData = [[NSMutableArray alloc] init];
NSMutableArray *head = [[NSMutableArray alloc] init];
leftTableData = [[NSMutableArray alloc] init];
NSMutableArray *left = [[NSMutableArray alloc] init];
rightTableData = [[NSMutableArray alloc]init];
for (NSMutableArray *dictionary in jsonDictionary)
{
Model *model = [[Model alloc]init];
model.cid = [[dictionary valueForKey:#"cid"]intValue];
model.iid = [[dictionary valueForKey:#"iid"]intValue];
model.yr = [[dictionary valueForKey:#"yr"]intValue];
model.val = [dictionary valueForKey:#"val"];
[head addObject:[NSString stringWithFormat:#"%ld", model.yr]];
[left addObject:[NSString stringWithFormat:#"%ld", model.iid]];
[mainTableData addObject:model];
}
NSOrderedSet *orderedSet = [NSOrderedSet orderedSetWithArray:head];
headData = [[orderedSet array] mutableCopy];
NSOrderedSet *orderedSet1 = [NSOrderedSet orderedSetWithArray:left];
NSMutableArray *arrLeft = [[orderedSet1 array] mutableCopy];
//remove duplicate enteries from header array
[leftTableData addObject:arrLeft];
NSMutableArray *right = [[NSMutableArray alloc]init];
for (int i = 0; i < arrLeft.count; i++)
{
NSMutableArray *array = [[NSMutableArray alloc] init];
for (int j = 0; j < headData.count; j++)
{
/* NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF.iid == %ld", [[arrLeft objectAtIndex:i] intValue]];
NSArray *filteredArray = [mainTableData filteredArrayUsingPredicate:predicate];*/
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF.iid == %ld AND SELF.yr == %ld", [[arrLeft objectAtIndex:i] intValue], [[headData objectAtIndex:j] intValue]];
NSArray *filteredArray = [mainTableData filteredArrayUsingPredicate:predicate];
NSMutableArray *newArray = [[NSMutableArray alloc] init];
TopicModel *topicModel = [[TopicModel alloc]init];
for (int k = 0; k < arrLeft.count; k++)
{
if (topicModel.IId == arrLeft[k])
{
[newArray addObject:[NSString stringWithFormat:#"%#",topicModel.IName]];
}
}
if([filteredArray count]>0)
{
Model *model = [filteredArray objectAtIndex:0];
[array addObject:model.val];
}
}
[right addObject:array];
}
[rightTableData addObject:right];
}
I am using FMDB, ASIHTTPRequest, SBJSON, XCMultisortTableView.
Please do help.

Answer 1

Well you are creating new TopicModel object which is empty! You need to use the one which you set in your viewDidLoad: method.
for (int k = 0; k < arrLeft.count; k++) {
if ([(TopicModel *)indicatorName[k] IId] == [arrLeft[k] integerValue]) {
[newArray addObject:[NSString stringWithFormat:#"%#",[(TopicModel *)indicatorName[k] IName]];
}
}