Spotlight plugin > date queries

[bfulop]

Time variables don't seem to work in the Spotlight plugin query.

This doesn't work: kMDItemLastUsedDate >= $time.this_week
This does: kMDItemKind == 'Folder'

[tiennou]

IIRC that's a "limitation" of NSMetadataQuery/NSPredicate. Making a predicate with some "variable" path raises the following error :
NSComparisonPredicate with right expression which is not NSConstantValueExpressionType or NSAggregateExpressionType given to NSMetadataQuery (kMDItemLastUsedDate >= $time.this_week).
(Note this is not from QS but from a test I wrote when I looked at that). So those queries must be manually mangled to become some acceptable predicates, which I didn't feel the will to do.

But then, there is [NSMetadataQuery predicateFromMetadataQueryString:], available 10.9+, thanks Apple ;-).