MySQL driver [WIP]

src/metabase/driver/mysql.clj

+(ns metabase.driver.mysql
+  (:require [korma.db :as kdb]
+            (metabase.driver [generic-sql :as generic-sql, :refer [GenericSQLIDriverMixin GenericSQLISyncDriverTableFKsMixin
+                                                                   GenericSQLISyncDriverFieldAvgLengthMixin GenericSQLISyncDriverFieldPercentUrlsMixin]]
+                             [interface :refer [IDriver ISyncDriverTableFKs ISyncDriverFieldAvgLength ISyncDriverFieldPercentUrls
+                                                ISyncDriverSpecificSyncField driver-specific-sync-field!]])
+            (metabase.driver.generic-sql [interface :refer :all])))
+
+(def ^:private ^:const column->base-type
+  {})
+
+(defrecord MySQLDriver []
+  ISqlDriverDatabaseSpecific
+  (connection-details->connection-spec [_ details]
+    (kdb/mysql details))
+
+  (database->connection-details [_ {:keys [details]}]
+    details)
+
+  (cast-timestamp-to-date [_ table-name field-name seconds-or-milliseconds]
+    ;; TODO
+    )
+
+  (timezone->set-timezone-sql [_ timezone]
+    ;; see http://stackoverflow.com/questions/930900/how-to-set-time-zone-of-mysql
+    (format "SET @@session.time_zone = '%s';" timezone)))
+
+(extend MySQLDriver
+  IDriver                     GenericSQLIDriverMixin
+  ISyncDriverTableFKs         GenericSQLISyncDriverTableFKsMixin
+  ISyncDriverFieldAvgLength   GenericSQLISyncDriverFieldAvgLengthMixin
+  ISyncDriverFieldPercentUrls GenericSQLISyncDriverFieldPercentUrlsMixin)
+
+(def ^:const driver
+  (map->MySQLDriver {:column->base-type    column->base-type
+                     :features             (conj generic-sql/features :set-timezone)
+                     :sql-string-length-fn :CHAR_LENGTH}))