lib/geocoder/cache.rb in geocoder-1.0.3 vs lib/geocoder/cache.rb in geocoder-1.0.4

@@ -19,18 +19,18 @@
     def []=(url, value)
       store[key_for(url)] = value
     end
 
     ##
-    # Expire cache entry for given URL,
-    # or pass <tt>:all</tt> to expire everything.
+    # Delete cache entry for given URL,
+    # or pass <tt>:all</tt> to clear all URLs.
     #
     def expire(url)
       if url == :all
         urls.each{ |u| expire(u) }
       else
-        self[url] = nil
+        expire_single_url(url)
       end
     end
 
 
     private # ----------------------------------------------------------------
@@ -63,8 +63,12 @@
     # Clean up value before returning. Namely, convert empty string to nil.
     # (Some key/value stores return empty string instead of nil.)
     #
     def interpret(value)
       value == "" ? nil : value
+    end
+
+    def expire_single_url(url)
+      store.del(key_for(url))
     end
   end
 end