The left side for an ALL or ANY statement must be either an NSArray or an NSSet

Question

The application that I just captured is randomly broken using "The left side for the ALL or ANY statement must be either an NSArray or NSSet error."

Application crashes when trying to read from Core Data. It does not crash all the time, just by accident. I'm not sure if its PREDICATE causing a problem or two threads accesses Core Data? If it were FORECASTING, I would have thought that every time it collapses. There were several transitions to the db structure, so perhaps one of the migrations left the object in a strange state and failed when this object was ever retrieved by Core Data?

Here are the predicate calls

+(NSString *)buildCompoundContainsStringForField:(NSString *)field searchTerm:(NSString *)search operator:(NSString *)operator { NSArray *parts = [search componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; NSString *partJoin = [NSString stringWithFormat:@"'%@ %@ contains[c]'", operator, field]; NSString *compoundContains = [parts componentsJoinedByString:partJoin]; NSString *predicateString = [NSString stringWithFormat:@"%@ contains[c] '%@'", field, compoundContains]; return predicateString; } NSPredicate *titleSearch = [AStore searchTitlePredicate:search]; NSPredicate *ingredientSearch = [AStore searchIngredientsPredicate:search]; NSPredicate *recipeDecription = [AStore searchDescriptionPredicate:search]; NSPredicate *searchMethod = [AStore searchMethodPredicate:search]; + (NSPredicate *)searchIngredientsPredicate:(NSString *)search { return [NSPredicate predicateWithFormat:[self buildCompoundContainsStringForField:@"ANY ingredients.desc" searchTerm:search operator:@"AND"]]; } + (NSPredicate *)searchTitlePredicate:(NSString *)search { return [NSPredicate predicateWithFormat:[self buildCompoundContainsStringForField:@"ANY title" searchTerm:search operator:@"AND"]]; } + (NSPredicate *)searchDescriptionPredicate:(NSString *)search { return [NSPredicate predicateWithFormat:[self buildCompoundContainsStringForField:@"ANY recipeDescription" searchTerm:search operator:@"AND"]]; } + (NSPredicate *)searchMethodPredicate:(NSString *)search { return [NSPredicate predicateWithFormat:[self buildCompoundContainsStringForField:@"ANY method" searchTerm:search operator:@"AND"]]; } 

=== METHOD WHEN ITS MOVEMENT ======

 -(void) updateDictionaryWithWeight:(int)weight usingRequest:(NSFetchRequest *)request { NSError *error; NSArray *results = [self.context executeFetchRequest:request error:&error]; <---- CRASHES/ERRORS HERE ...... } 

=== HERE CALL CALL ====

  *** First throw call stack: ( 0 CoreFoundation 0x0000000103fbb495 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x0000000103d1a99e objc_exception_throw + 43 2 Foundation 0x000000010351606b -[NSPredicateOperator performOperationUsingObject:andObject:] + 826 3 Foundation 0x0000000103515c1e -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 314 4 Foundation 0x0000000103515ae2 -[NSPredicate evaluateWithObject:] + 19 5 CoreData 0x0000000101df40aa -[NSManagedObjectContext executeFetchRequest:error:] + 2170 6 CoreData 0x0000000101e3b18b -[NSManagedObjectContext(_NestedContextSupport) _parentObjectsForFetchRequest:inContext:error:] + 395 7 CoreData 0x0000000101ea5ed3 __82-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:]_block_invoke + 563 8 libdispatch.dylib 0x00000001042ef72d _dispatch_client_callout + 8 9 libdispatch.dylib 0x00000001042de5d0 _dispatch_barrier_sync_f_invoke + 57 10 CoreData 0x0000000101e3af92 _perform + 114 11 CoreData 0x0000000101e3ae2d -[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:] + 301 12 CoreData 0x0000000101df3a21 -[NSManagedObjectContext executeFetchRequest:error:] + 497 13 Things 0x000000010035ff40 -[AStore updateDictionaryWithWeight:usingRequest:] + 128 14 Things 0x000000010035cce8 -[AStore weightedThingsWithSearchString:andFilterFlags:sortedBy:] + 920 15 Things 0x00000001003b87a7 -[ASearchViewController doSearchWithCompletionBlock:] + 1319 16 Things 0x00000001003be466 -[ASearchViewController localRefresh:] + 198 17 Things 0x00000001003c17e1 __59-[ASearchViewController filterControllerDidFinish:]_block_invoke + 577 18 Things 0x000000010059624e __72+[UIView(mfw) presentIndicatorWithLoadingTitle:successTitle:completion:]_block_invoke + 174 19 libdispatch.dylib 0x00000001042dc851 _dispatch_call_block_and_release + 12 20 libdispatch.dylib 0x00000001042ef72d _dispatch_client_callout + 8 21 libdispatch.dylib 0x00000001042df3fc _dispatch_main_queue_callback_4CF + 354 22 CoreFoundation 0x0000000104019289 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9 23 CoreFoundation 0x0000000103f66854 __CFRunLoopRun + 1764 24 CoreFoundation 0x0000000103f65d83 CFRunLoopRunSpecific + 467 25 GraphicsServices 0x0000000104b2bf04 GSEventRunModal + 161 26 UIKit 0x0000000102493e33 UIApplicationMain + 1010 27 Things 0x0000000100002463 main + 115 28 libdyld.dylib 0x00000001045405fd start + 1 29 ??? 0x0000000000000001 0x0 + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException 

Answer 1

The problem is that the ANY operator is not needed here. As Martin R mentioned, ANY is used with many relationships. Therefore, if you have something like:

 class Recipe { public String title; } class CookBook { public Array recipes; } 

and you want to find all CookBooks that have a recipe with a specific title, then you will use the predicate:

 NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ANY recipes.title CONTAINS[c] %@", @"sh"]; 

If you just want all the recipe objects to match your type, then the ANY operator is not needed. Just use:

 NSPredicate *predicate = [NSPredicate predicateWithFormat:@"title CONTAINS[c] %@", @"sh"]; 

If you want a more detailed explanation, read: https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/Predicates/Predicates.pdf

In particular, pay attention to the section “Using predicates with keys”. Hope this helps.