(fn[rq rs](let[v(.getAttribute rq"vars")c(.getAttribute rq"c")
 ds(:datastoreService v)
 l(.getParameter rq"l")
 ll(if l(Long. l)64)
 q(doto
  (com.google.appengine.api.datastore.Query."BootStrap")
  (.setKeysOnly)
  (.addSort"date"(:sortDirAsc v)))
 rl(.asIterable(.prepare ds q)
  ((:queryLimit v)ll))]
(apply str(map(fn[e](str(.getId(.getKey e))" "))
  rl))))