Dear list, I have a core-data entity which has a derived read only property declared as below.
I then have a search field on the UI with a predicate bound to the array controller for the entity with the predicate format being: "contentString contains $value" When I run this the app crashes and I get the following back-trace from gdb: Program received signal: “EXC_BAD_ACCESS”. sharedlibrary apply-load-rules all (gdb) bt #0 0x00007fff8665611c in objc_msgSend () #1 0x00007fff86add30a in -[NSInPredicateOperator performPrimitiveOperationUsingObject:andObject:] () #2 0x00007fff86a4055d in -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] () #3 0x00007fff86a403a2 in _filterObjectsUsingPredicate () #4 0x00007fff86a7853a in -[NSMutableArray(NSPredicateSupport) filterUsingPredicate:] () #5 0x00007fff817ce4b9 in -[NSArrayController _filterObjects:] () #6 0x00007fff817bf07f in -[NSArrayController _arrangeObjectsWithSelectedObjects:avoidsEmptySelection:operationsMask:useBasis:] () #7 0x00007fff817c718d in -[NSArrayController setFilterPredicate:] () #8 0x00007fff86a1a429 in -[NSObject(NSKeyValueCoding) setValue:forKey:] () #9 0x00007fff86a78f2e in -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] () #10 0x00007fff817d37ad in -[NSBinder _setValue:forKeyPath:ofObject:mode:validateImmediately:raisesForNotApplicableKeys:error:] () #11 0x00007fff817d3665 in -[NSBinder setValue:forBinding:error:] () #12 0x00007fff81bd50e4 in -[NSViewStateBinder _setValue:forBinding:errorFallbackMessage:] () #13 0x00007fff81ab5867 in -[NSSearchFieldBinder performAction:] () #14 0x00007fff817eaf37 in -[_NSBindingAdaptor _objectDidTriggerAction:bindingAdaptor:] () #15 0x00007fff8175efda in -[NSControl sendAction:to:] () #16 0x00007fff81ab6080 in -[NSSearchFieldCell(NSSearchFieldCell_Local) _sendPartialString] () #17 0x00007fff86a60a39 in __NSFireTimer () #18 0x00007fff83e2aa58 in __CFRunLoopRun () #19 0x00007fff83e28c2f in CFRunLoopRunSpecific () #20 0x00007fff87207a4e in RunCurrentEventLoopInMode () #21 0x00007fff872077b1 in ReceiveNextEventCommon () #22 0x00007fff8720770c in BlockUntilNextEventMatchingListInMode () #23 0x00007fff8160a1f2 in _DPSNextEvent () #24 0x00007fff81609b41 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] () #25 0x00007fff815cf747 in -[NSApplication run] () #26 0x00007fff815c8468 in NSApplicationMain () Can anyone see what I'm doing wrong (assuming it's my fault, and not a bug) ? Alternatively, anyone got a good idea how to debug this? Best wishes, Martin @property (readonly) NSString* contentString; - (NSString*)contentString { NSData *data = [self valueForKey:@"content"]; if (!data || [data length] == 0) return @""; NSAttributedString *attStr = [[NSAttributedString alloc] initWithRTFD:data documentAttributes:nil]; if (!attStr) return @""; NSString *contentStr = [attStr string]; [attStr release]; return contentStr; } + (NSSet *)keyPathsForValuesAffectingContentString { return [NSSet setWithObject:@"content"]; } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Martin Hewitson Albert-Einstein-Institut Max-Planck-Institut fuer Gravitationsphysik und Universitaet Hannover Callinstr. 38, 30167 Hannover, Germany Tel: +49-511-762-17121, Fax: +49-511-762-5861 E-Mail: martin.hewit...@aei.mpg.de WWW: http://www.aei.mpg.de/~hewitson ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com