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Re: Exclude or Negate NSComparisonPredicate
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Re: Exclude or Negate NSComparisonPredicate


  • Subject: Re: Exclude or Negate NSComparisonPredicate
  • From: Tim Schröder <email@hidden>
  • Date: Mon, 21 May 2012 20:57:38 +0200

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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References: 
 >Exclude or Negate NSComparisonPredicate (From: Chris Paveglio <email@hidden>)

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