ios - cannot add parentContext to NSManagedObjectContext, context already has a coordinator -


i have view retrieve saved entity (route *) main nsmanagedobjectcontext. want import tempcontext. following marcus zarra's examples, this:

    nsmanagedobjectcontext *moc = _route.managedobjectcontext;     nsmanagedobjectid *routeid = [_route objectid];     nspersistentstorecoordinator *psc = moc.persistentstorecoordinator;     self.tempcontext = [[nsmanagedobjectcontext alloc] initwithconcurrencytype:nsprivatequeueconcurrencytype];     [self.tempcontext setpersistentstorecoordinator:psc];     nsmanagedobject *localroute = [self.tempcontext objectwithid:routeid];     [localroute motodictionary:localroute];     self.tempcontext.parentcontext = moc; // crashes here

everything until try set parentcontext of tempcontext main moc. error: 

terminating app due uncaught exception 'nsinternalinconsistencyexception', reason: 'context has coordinator;  cannot replace.'

i understand it's telling me cannot change persistentstorecoordinator. i'm nto sure why it's telling me that. when set breakpoint, tempcontext @ different memory addres main moc. also, self.tempcontext.parentcontext nil. i'd think if it's nil, set nil parameter moc, crashes. thoughts? in advance!

for managed object context, can

  • either set persistent store coordinator, second independent moc same store,
  • or set parent context child moc,

but not both.


Comments

Post a Comment

Popular posts from this blog

java.util.scanner - How to read and add only numbers to array from a text file -

i'm learning java , have question regarding reading file want read numbers file contains strings well. here example of file: 66.56 "3 java 3-43 5-42 2.1 1 and here coding: public class test { public static void main (string [] args){ if (0 < args.length) { file x = new file(args[0]); try{ scanner in = new scanner( new fileinputstream(x)); arraylist<double> test = new arraylist<>(); while(in.hasnext()){ if(in.hasnextdouble()){ double f=in.nextdouble(); test.add(f);} else {in.next();} } catch(ioexception e) { system.err.println("exception during reading: " + e); } } my problem add 66.56,2.1 , 1 doesn't add 3 after "3 or ignores 3-43 , 5-42 can tell me how skip strings , add doubles here? thanks all said 3 ie; "3, 3-43 , 4-42 strings either u read string , split , check number @ " , - or put in space between characters , integers. jvm after compilation tre...
Read more

rewrite - Trouble with Wordpress multiple custom querystrings -

i'm working on adding multiple querystring , doesn't seem work. i've found codes seems work others might i'm missing something. i want like: http://mydomain.com/board/?getyear=2013&getsometext2=sometext to http://mydomain.com/board/2013/sometext/ i added code below functions.php file. doesn't seem work should though. this works. echoing querystring gets both variable without problem. http://mydomain.com/board/2013/sometext/ but doesn't. tested querystring vis isset() seems nothing being set/get http://mydomain.com/board/2013/ function add_query_vars($vars) { $vars[] = "getyear"; $vars[] = "getsometext2"; return $vars; } add_filter('query_vars', 'add_query_vars'); function add_rewrite_rules($arules) { $anewrules = array('board/([^/]+)/([^/]+)/?$' => 'index.php?pagename=board&getyear=$matches[1]&getsometext2=$matches[2]'); $arules = $a...
Read more