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(ns clojure-sql.core
(:refer-clojure :exclude [sort take drop])
(:require [clojure.set :as set]
[clojure-sql.compiler :as c]
[clojure-sql.dsl :as d]
[clojure-sql.query :as q]
[clojure-sql.util :as u]
[clojure.walk]))
(defmacro pull [ns & vlist]
`(do ~@(for [i vlist
:let [sym (symbol (name ns) (name i))]]
`(def ~(with-meta i
(u/map-vals (fn [x] `(quote ~x)) (meta (resolve sym))))
~sym))
nil))
(pull clojure-sql.dsl
table join
project rename
select
group having
sort take drop)
(def ^:private ^:dynamic *database-type* nil)
(defn set-database-type! [new-type]
(alter-var-root #'*database-type* (constantly new-type))
nil)
(def ^:private ^:dynamic *query-executor* (comp second vector))
(defn set-query-executor! [exec-fn]
(alter-var-root #'*query-executor* (constantly exec-fn))
nil)
(defmethod print-method clojure_sql.query.Query [query writer]
(binding [*out* writer]
(pr (c/compile-select *database-type* query))))
(defn run-query [query]
(assert *query-executor* "Cannot execute a query without a query executor")
(*query-executor* :select (c/compile-select *database-type* query)))
(defn insert! [query & records]
(assert *query-executor* "Cannot execute a query without a query executor")
(let [compiled (apply c/compile-insert *database-type* query records)]
(*query-executor* :insert compiled)))
(defn update! [query partial-record]
(assert *query-executor* "Cannot execute a query without a query executor")
(let [compiled (c/compile-update *database-type* query partial-record)]
(*query-executor* :update compiled)))
(defn delete! [query]
(assert *query-executor* "Cannot execute a query without a query executor")
(let [compiled (c/compile-delete *database-type* query)]
(*query-executor* :delete compiled)))
(q/set-query-deref-behaviour! run-query)
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