105 lines
4 KiB
Clojure
105 lines
4 KiB
Clojure
(ns next.jdbc-test
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(:require [clojure.test :refer [deftest is testing]]
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[next.jdbc :refer :all]))
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(deftest a-test
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(testing "FIXME, I fail."
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(is (= 0 1))))
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(comment
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(def db-spec {:dbtype "h2:mem" :dbname "perf"})
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(def db-spec {:dbtype "derby" :dbname "perf" :create true})
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(def db-spec {:dbtype "mysql" :dbname "worldsingles" :user "root" :password "visual"})
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(def con db-spec)
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(def con (get-datasource db-spec))
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(get-connection con {})
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(def con (get-connection (get-datasource db-spec) {}))
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(def con (get-connection db-spec {}))
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(execute! con ["DROP TABLE fruit"])
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;; h2
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(execute! con ["CREATE TABLE fruit (id int default 0, name varchar(32) primary key, appearance varchar(32), cost int, grade real)"])
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(execute! con ["INSERT INTO fruit (id,name,appearance,cost,grade) VALUES (1,'Apple','red',59,87), (2,'Banana','yellow',29,92.2), (3,'Peach','fuzzy',139,90.0), (4,'Orange','juicy',89,88.6)"])
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;; mysql
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(execute! con ["CREATE TABLE fruit (id int auto_increment, name varchar(32), appearance varchar(32), cost int, grade real, primary key (id))"])
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(execute! con ["INSERT INTO fruit (id,name,appearance,cost,grade) VALUES (1,'Apple','red',59,87), (2,'Banana','yellow',29,92.2), (3,'Peach','fuzzy',139,90.0), (4,'Orange','juicy',89,88.6)"]
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{:return-keys true})
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(.close con)
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(require '[criterium.core :refer [bench quick-bench]])
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;; calibrate
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(quick-bench (reduce + (take 10e6 (range))))
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;; raw java
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(defn select* [^java.sql.Connection con]
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(let [ps (doto (.prepareStatement con "SELECT * FROM fruit WHERE appearance = ?")
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(.setObject 1 "red"))
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rs (.executeQuery ps)
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_ (.next rs)
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value (.getObject rs "name")]
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(.close ps)
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value))
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(quick-bench (select* con))
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;; almost same as the Java example above
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(quick-bench
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(reduce (fn [rs m] (reduced (:name m)))
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nil
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(reducible! con ["select * from fruit where appearance = ?" "red"])))
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(quick-bench
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(execute-one! con
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["select * from fruit where appearance = ?" "red"]
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{:row-fn :name}))
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;; simple query
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(quick-bench
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(execute! con ["select * from fruit where appearance = ?" "red"]))
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(execute! con ["select * from fruit"])
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(into [] (map (partial into {})) (reducible! con ["select * from fruit"]))
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;; with a prepopulated prepared statement
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(with-open [ps (prepare con ["select * from fruit where appearance = ?" "red"] {})]
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(quick-bench
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[(reduce (fn [_ row] (reduced (:name row)))
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nil
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(reducible! ps))]))
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;; same as above but setting parameters inside the benchmark
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(with-open [ps (prepare con ["select * from fruit where appearance = ?"] {})]
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(quick-bench
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[(reduce (fn [_ row] (reduced (:name row)))
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nil
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(reducible! (prepare/set-parameters ps ["red"])))]))
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;; this takes more than twice the time of the one above which seems strange
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(with-open [ps (prepare con ["select * from fruit where appearance = ?"] {})]
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(quick-bench
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[(reduce (fn [_ row] (reduced (:name row)))
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nil
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(reducible! (prepare/set-parameters ps ["red"])))
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(reduce (fn [_ row] (reduced (:name row)))
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nil
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(reducible! (prepare/set-parameters ps ["fuzzy"])))]))
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;; full first row
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(quick-bench
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(execute-one! con ["select * from fruit where appearance = ?" "red"]))
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;; test assoc works
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(execute-one! con
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["select * from fruit where appearance = ?" "red"]
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{:row-fn #(assoc % :test :value)})
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;; test assoc works
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(execute! con
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["select * from fruit where appearance = ?" "red"]
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{:row-fn #(assoc % :test :value)})
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(with-transaction [t con {:rollback-only? true}]
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(execute! t ["INSERT INTO fruit (id,name,appearance,cost,grade) VALUES (5,'Pear','green',49,47)"])
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(execute! t ["select * from fruit where name = ?" "Pear"]))
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(execute! con ["select * from fruit where name = ?" "Pear"])
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(execute! con ["select * from membership"]))
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