macOS XML Parser

[Monaj]

Hello Everyone

I am using following method for fetch data from DB in form of XML
and using XML parser

I calling this function in timer

It works fine

But some time application crashes due to this
Can any body tell me where i am wrong

-(void)parseXMLFileForUserId : ( NSString * )rolecode userId:(int)userId switchCase:( int )SCase lasTtime:(NSString  * )lasTtime{
	
	[eventsList removeAllObjects];
	NSString *query;
	NSString *stringBoundary,*contentType,*ans=@"123";
	NSURL *cgiUrl;
	NSMutableURLRequest *postRequest;
	NSError *error;
	NSData *searchData;
	NSHTTPURLResponse *response;
	NSMutableData *postBody;
	
	switch (SCase) {
		case 1:
			query=[NSString stringWithFormat:@"Select distinct c.* from Calendar_Events as c , Cal_Delegates as d, rcs_update as r where c. calendar_id =d.calendar_id and d.role_code='%@' AND r.updated_entity_id=c.event_id and r.updated_entity='CALENDAR' and r.update_time >= '%@' AND NOT r.owner_id =%d AND NOT r.update_action='DEL' order by event_begin",rolecode,lasTtime,userId];
			break;
		case 2:
			query=[NSString stringWithFormat:@"Select distinct r.updated_entity_id as event_id from rcs_update as r where r.updated_entity='CALENDAR' AND r.update_action = 'DEL' AND r.update_time >= '%@' AND NOT r.owner_id =%d",lasTtime,userId];
			break;
		default:
			break;
	}
	
	NSLog(@"parseXMLFileForQueryEvents : %@",query);
	
	
	
	cgiUrl = [NSURL URLWithString:@"https://keyss.in/API.php"];
	postRequest = [NSMutableURLRequest requestWithURL:cgiUrl];
	[postRequest setHTTPMethod:@"POST"];
	
	
	stringBoundary = [NSString stringWithString:@"0000RCSIMGUploadxxxxxx"];
	contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", stringBoundary];
	[postRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];
	
	//setting up the body:
	postBody = [NSMutableData data];
	[postBody appendData:[[NSString stringWithFormat:@"\r\n\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"code\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:ans] dataUsingEncoding:NSUTF8StringEncoding]];
	
	[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"action\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:@"query"] dataUsingEncoding:NSUTF8StringEncoding]];
	
	[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"devmode\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:[[[NSBundle mainBundle] infoDictionary] objectForKey:@"devmode"]] dataUsingEncoding:NSUTF8StringEncoding]];
	
	[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"q\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[postBody appendData:[[NSString stringWithString:query] dataUsingEncoding:NSUTF8StringEncoding]];
	
	[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
	[postRequest setHTTPBody:postBody];
	
	searchData = [NSURLConnection sendSynchronousRequest:postRequest returningResponse:&response error:&error];
	
	if([error code]!=0){
		if(chkRetry<=3){
			chkRetry++;
			[self parseXMLFileForUserId:rolecode userId:userId switchCase:SCase lasTtime:lasTtime];
		}
	}
	chkRetry=0;
	eventsParser = [[NSXMLParser alloc] initWithData:searchData];
	[eventsParser setDelegate:self]; 
	[eventsParser setShouldResolveExternalEntities:YES]; 
	
	BOOL success = [eventsParser parse];
	[eventsParser release];
}

Thanks
Monaj

 

[iShater]

Please use the CODE tags around your code. It is the # symbol when you are editing/posting.

 

[Monaj]

sorry for that

 

[rossipoo]

That's a lot of code. Where exactly does it crash? You can check the console log or use the debugger to find out where it stops.

 

[Monaj]

there is no a particular position where its crashes
most of the it works ok

I am calling this function in every 25 second
some time its crashes in 10-25 min
some time after 1 -2 hour