From fb341d5abdb09688c6308f2cc94abcfb5295d6c3 Mon Sep 17 00:00:00 2001
From: Ben Kurtovic <ben.kurtovic@gmail.com>
Date: Fri, 6 Jun 2014 12:58:55 -0400
Subject: [PATCH] empty_database procedure.

---
 bitshift/database/migration.py | 17 ++++++++++++++++-
 bitshift/database/schema.sql   | 17 +++++++++++++++--
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/bitshift/database/migration.py b/bitshift/database/migration.py
index 9a74a18..7a4ba62 100644
--- a/bitshift/database/migration.py
+++ b/bitshift/database/migration.py
@@ -3,7 +3,7 @@ Contains information about database schema versions, and SQL queries to update
 between them.
 """
 
-VERSION = 8
+VERSION = 9
 
 MIGRATIONS = [
     # 1 -> 2
@@ -100,6 +100,21 @@ MIGRATIONS = [
     [
         """ALTER TABLE `origins`
            DROP COLUMN `origin_image`"""
+    ],
+    # 8 -> 9
+    [
+        """DELIMITER //
+        CREATE PROCEDURE `empty_database`
+            BEGIN
+                DELETE FROM `codelets`;
+                DELETE FROM `code`;
+                DELETE FROM `cache`;
+                ALTER TABLE `codelets` AUTO_INCREMENT = 1;
+                ALTER TABLE `authors` AUTO_INCREMENT = 1;
+                ALTER TABLE `symbols` AUTO_INCREMENT = 1;
+                ALTER TABLE `symbol_locations` AUTO_INCREMENT = 1;
+            END
+        DELIMITER ;"""
     ]
 ]
 
diff --git a/bitshift/database/schema.sql b/bitshift/database/schema.sql
index 913a365..65266b8 100644
--- a/bitshift/database/schema.sql
+++ b/bitshift/database/schema.sql
@@ -1,4 +1,4 @@
--- Schema version 8
+-- Schema version 9
 
 CREATE DATABASE `bitshift` DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
 USE `bitshift`;
@@ -6,7 +6,7 @@ USE `bitshift`;
 CREATE TABLE `version` (
     `version` INT UNSIGNED NOT NULL
 ) ENGINE=InnoDB;
-INSERT INTO `version` VALUES (8);
+INSERT INTO `version` VALUES (9);
 
 CREATE TABLE `origins` (
     `origin_id` TINYINT UNSIGNED NOT NULL AUTO_INCREMENT,
@@ -107,6 +107,19 @@ CREATE TABLE `cache_data` (
         ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB;
 
+DELIMITER //
+CREATE PROCEDURE `empty_database`
+    BEGIN
+        DELETE FROM `codelets`;
+        DELETE FROM `code`;
+        DELETE FROM `cache`;
+        ALTER TABLE `codelets` AUTO_INCREMENT = 1;
+        ALTER TABLE `authors` AUTO_INCREMENT = 1;
+        ALTER TABLE `symbols` AUTO_INCREMENT = 1;
+        ALTER TABLE `symbol_locations` AUTO_INCREMENT = 1;
+    END
+DELIMITER ;
+
 CREATE EVENT `flush_cache`
     ON SCHEDULE EVERY 1 HOUR
     DO