macro

;; ^:dynamic  will be required to allow rebinding in Clojure 1.3
(def *schema-imports*
  (hash-map))

(defmacro with-schema-imports
  "Executes body with schema elems (given as vector of symbol, keywords, or
strings) imported and thus referrable by their simple name."
  [elems & body]
  (letfn [(keyval [qn]
          (let [qstr (name qn)
            lof (. qstr lastIndexOf ".")
            sn (. qstr substring (inc lof))]
            [sn qstr]))]
    (let [keyvals (mapcat keyval elems)]
      `(binding [*schema-elems* ~(apply assoc *schema-imports* keyvals)]
     ~@body))))

;; That works fine in the defining namespace, but in a different one (the test namespace) I get:

Unable to resolve var: funql.core/*schema-elems* in this context