lib/lunar/search.rb in lunar-0.2.0 vs lib/lunar/search.rb in lunar-0.2.1

@@ -16,9 +16,12 @@
       # Default finder, uses Ohm style finding
       @finder = lambda { |id| prefix[id] }
     end
 
     def results(&block)
+      return [] if sets.empty?
+
+      # TODO : cache this for X seconds, X seconds being customizable
       Lunar.redis.zunion dist_key, sets.size, *sets
       
       if block_given?
         ResultSet.new(dist_key, &block)
       else