I use this code to search for something *not* containing someString with 
NSMetadataquery:

predicate = [NSPredicate predicateWithFormat:@"NOT kMDItemFSName LIKE '%@'", 
someString];

As NSMetadataQuery only uses a subset of the NSPredicate syntax, I doubt 
whether using NSCompoundPredicate or something related will work.

Tim


Am 21.05.2012 um 20:47 schrieb Chris Paveglio:

> I'm doing an NSMetadataQuery something like this:
> 
> NSPOT = NSLikePredicateOperatorType;
> myPredicate = [NSComparisonPredicate
> predicateWithLeftExpression:[NSExpressionexpressionForKeyPath:@"*"] 
> rightExpression:[NSExpressionexpressionForConstantValue:@"somestring"]
> modifier:NSDirectPredicateModifier
> type:NSPOT
> options:options];
> [myQuery setPredicate:myPredicate];
> [myQuerystartQuery];
> 
> But I've not seen any examples of how to search for everything that DOESN'T 
> contain "somestring".
> I see some docs on NSCompoundPredicate and notPredicateWithSubpredicate, but 
> does that apply to this style of predicate? If so, how would that work?
> 
> Chris
> 
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