lib/mongoo/identity_map.rb in mongoo-0.3.1 vs lib/mongoo/identity_map.rb in mongoo-0.4.0

@@ -46,10 +46,10 @@
           end
         end
       end
 
       def write(doc)
-        if store
+        if store && !store.has_key?(doc.id.to_s)
           store[doc.id.to_s] = doc
         end
       end
 
       def flush!
\ No newline at end of file