ios - Xcode Command Line tools to convert sqlite to coredata returning with nill data -

i trying use command line tools convert sqlite coredata .the problem core data file created nil data .the data in sqlite not copied coredata . followed http://www.raywenderlich.com/12170/core-data-tutorial-how-to-preloadimport-existing-data-updated tutorial .

i created project in osx command line tools added datamodel .xcdatamodel file , entity files project later added mydata.sqlite file in project->targets->buildphases->copyfiles.

my main.m

static nsmanagedobjectmodel *managedobjectmodel() {     static nsmanagedobjectmodel *model = nil;     if (model != nil) {         return model;     }      nsstring *path = @"mydatamodel";     nsurl *modelurl = [nsurl fileurlwithpath:[path stringbyappendingpathextension:@"mom"]];     model = [[nsmanagedobjectmodel alloc]  initwithcontentsofurl:modelurl];      return model; }  static nsmanagedobjectcontext *managedobjectcontext() {     static nsmanagedobjectcontext *context = nil;     if (context != nil) {         return context;     }      @autoreleasepool {         context = [[nsmanagedobjectcontext alloc] init];          nspersistentstorecoordinator *coordinator =       [[nspersistentstorecoordinator alloc]  initwithmanagedobjectmodel:managedobjectmodel()];         [context setpersistentstorecoordinator:coordinator];          nsstring *store_type = nssqlitestoretype;          nsstring *path = [[nsprocessinfo processinfo] arguments][0];         path = [path stringbydeletingpathextension];         nsurl *url = [nsurl fileurlwithpath:[path stringbyappendingpathextension:@"sqlite"]];          nserror *error;         //note nssqlitepragmasoption         nsdictionary *options = @{ nssqlitepragmasoption : @{@"journal_mode" : @"delete"} };         nspersistentstore *newstore = [coordinator addpersistentstorewithtype:store_type configuration:nil url:url options:options error:&error];          if (newstore == nil) {             nslog(@"store configuration failure %@", ([error localizeddescription] != nil) ? [error localizeddescription] : @"unknown error");         }     }     return context; }  int main(int argc, const char * argv[]) {     @autoreleasepool {         // create managed object context         nsmanagedobjectcontext *context = managedobjectcontext();          // custom code here...         // save managed object context         nserror *error = nil;         if (![context save:&error]) {             nslog(@"error while saving %@", ([error localizeddescription] != nil) ? [error localizeddescription] : @"unknown error");             exit(1);         }     } } 

the sqlite converted coredata data mapping not done.the coredata file created nill data .can 1 me issue . thank