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@samaaron
Created August 23, 2012 10:22
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How to suck an entire postgres db into Clojure datastructures in memory
(ns ormclj.pg
(:require [clojure.java.jdbc :as sql]))
(defn pg-db
[hostname port db-name user passwd]
{:classname "org.postgresql.Driver"
:subprotocol "postgresql"
:subname (str "//" hostname ":" port "/" db-name)
:user user
:password passwd})
(def conn (pg-db "localhost" 5432 "dbname" "user-name" "password"))
(def tables (sql/with-connection conn
(sql/with-query-results rs ["SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';"]
(doall (for [row rs] row)))))
(def db
(reduce
(fn [res t]
(assoc res
(keyword (:table_name t))
(sql/with-connection db
(sql/with-query-results rs [(str "select * from " (:table_name t))]
(doall (for [row rs] row))))))
{}
tables))
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