I have run into a problem that has me stumped. I am attempting to
fetch objects matching user-specified criteria for a smart playlist
implementation, and depending on the keypaths used and the type of
backing store I am seeing different behavior! I am aware of the
notes regarding using Cocoa-specific methods such as
localizedCompare: in predicates, and I don't believe that is the
problem (though it may be).
This code works fine using any store I've tested:
playlistObject = [NSEntityDescription
insertNewObjectForEntityForName:@"DynamicPlaylist"
inManagedObjectContext:managedObjectContext];
[playlistObject setPredicate:[NSPredicate predicateWithFormat:@"url
CONTAINS[c] %@", @"nat"]];
// Results from the fetch are correct
Here is where the weirdness emerges: the following fetch works
correctly using a binary store, but fails to return any results using
an SQLite store:
playlistObject = [NSEntityDescription
insertNewObjectForEntityForName:@"DynamicPlaylist"
inManagedObjectContext:managedObjectContext];
[playlistObject setPredicate:[NSPredicate
predicateWithFormat:@"metadata.title CONTAINS[c] %@", @"nat"]];
// No results found for SQLite, but correct for binary
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