Master data matches many list relationships

Question

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Say that I have the following attributes: [red, green, blue] How can I get objects whose attributes are in the list , but only in this list ?

 * Object_1 (red, green, blue) * Object_2 (red, green) * Object_3 (red) 

This means that there is no fetch Object_4 (red, green, blue, yellow) , since it has yellow , which is not in the list

Answer 1

you can create a complex predicate that can add your predicates:

 NSPredicate *predOne = [NSPredicate predicateWithFormat:@"color == %@",@"red"]; NSPredicate *predTwo = [NSPredicate predicateWithFormat:@"color == %@",@"blue"]; NSPredicate *predThree = [NSPredicate predicateWithFormat:@"color == %@",@"green"]; NSArray *allPredicates = [[NSArray alloc] initWithObjects:predOne,predTwo,predThree, nil]; NSPredicate finalPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:allPredicates];