Hi all,
I have some objects in an array and I want to filter it in the UI off my app.
I first created a test case to test out various NSPredicates, and have verified
that they work. For instance, filtering an array with the following predicate
yields correct results:
[NSPredicate predicateWithFormat:@"ANY personalNames.value.gedcomString
CONTAINS %@", @"Hansen"]
I then set about implementing an NSPredicateEditor and have put in the
following NSPredicateRowTemplate:
[[NSPredicateEditorRowTemplate alloc]
initWithLeftExpressions:stringExpressions
rightExpressionAttributeType:NSStringAttributeType
modifier:NSAnyPredicateModifier
operators:stringOperators
options:0]
Where stringExpressions is an array containing:
[NSExpression expressionForKeyPath:@"personalNames.value.gedcomString"]
When I run my app, I get an exception (quoted below) as soon as I expose my
objects to my array controller (via a property on my document it's bound to),
though as far as I can tell, the predicate should be functionally the exact
same? For completness, inspecting it in the debugger yields:
(NSPredicate *) $0 = 0x000000010f87d790 ANY personalNames.value.gedcomString
CONTAINS ""
I've verified that the array <__NSArrayM 0x109cfb490> contains the expected
personalNames from the first object in the array I'm filtering.
Can anyone provide some insights here?
Regards,
Mikkel Eide Eriksen
> 2012-09-27 19:08:18.261 GedcomGUI[29311:9e0b] An uncaught exception was raised
> 2012-09-27 19:08:18.261 GedcomGUI[29311:9e0b] [<__NSArrayM 0x109cfb490>
> addObserver:forKeyPath:options:context:] is not supported. Key path:
> value.gedcomString
> 2012-09-27 19:08:18.263 GedcomGUI[29311:9e0b] (
> 0 CoreFoundation 0x00007fff8fdb9716
> __exceptionPreprocess + 198
> 1 libobjc.A.dylib 0x00007fff99b49470
> objc_exception_throw + 43
> 2 CoreFoundation 0x00007fff8fdb94ec
> +[NSException raise:format:] + 204
> 3 Foundation 0x00007fff955c04b7
> -[NSArray(NSKeyValueObserverRegistration)
> addObserver:forKeyPath:options:context:] + 76
> 4 Foundation 0x00007fff955204ae
> -[NSKeyValueNestedProperty object:didAddObservance:recurse:] + 226
> 5 Foundation 0x00007fff955191b9
> -[NSObject(NSKeyValueObserverRegistration)
> _addObserver:forProperty:options:context:] + 222
> 6 Foundation 0x00007fff9551812d
> -[NSObject(NSKeyValueObserverRegistration)
> addObserver:forKeyPath:options:context:] + 111
> 7 AppKit 0x00007fff9809864a
> -[_NSModelObservingTracker
> _registerOrUnregister:observerNotificationsForModelObject:] + 200
> 8 AppKit 0x00007fff980981dd
> -[_NSModelObservingTracker startObservingModelObjectsAtReferenceIndexes:] +
> 364
> 9 AppKit 0x00007fff9805bd74
> -[NSArrayController
> _arrangeObjectsWithSelectedObjects:avoidsEmptySelection:operationsMask:useBasis:]
> + 717
> 10 AppKit 0x00007fff98075d8e
> -[NSArrayController setContent:] + 878
> 11 AppKit 0x00007fff98075568
> -[NSArrayDetailBinder _refreshDetailContentInBackground:] + 1268
> 12 Foundation 0x00007fff95521a90
> NSKeyValueNotifyObserver + 390
> 13 Foundation 0x00007fff955234a9
> NSKeyValueDidChange + 456
> 14 Foundation 0x00007fff954dea0f
> -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 130
> 15 GedcomGUI 0x0000000100001d66 -[Document
> context:didFinishWithEntityCount:] + 550
> 16 Gedcom 0x000000010004df67 -[GCContext
> parseNodes:error:] + 3383
> 17 Gedcom 0x000000010004e770 -[GCContext
> parseData:error:] + 832
> 18 GedcomGUI 0x000000010000155e
> __22-[Document parseData:]_block_invoke_0 + 78
> 19 libdispatch.dylib 0x00007fff8f645f3d
> _dispatch_call_block_and_release + 15
> 20 libdispatch.dylib 0x00007fff8f6420fa
> _dispatch_client_callout + 8
> 21 libdispatch.dylib 0x00007fff8f64323e
> _dispatch_worker_thread2 + 304
> 22 libsystem_c.dylib 0x00007fff92b13ceb
> _pthread_wqthread + 404
> 23 libsystem_c.dylib 0x00007fff92afe1b1
> start_wqthread + 13
> )
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