Register and reversion update, add downgrade

airtime_mvc/application/controllers/downgrade_sql/airtime_2.5.15/downgrade.sql

@@ -1 +1 @@
-ALTER TABLE third_party_track_references ALTER COLUMN file_id SET NOT NULL;
+ALTER TABLE third_party_track_references ALTER COLUMN file_id SET NOT NULL;

airtime_mvc/application/controllers/downgrade_sql/airtime_3.0.0-alpha/downgrade.sql

@@ -0,0 +1,3 @@
+ALTER TABLE cc_show_instances DROP COLUMN IF EXISTS autoplaylist_built;
+ALTER TABLE cc_show DROP COLUMN IF EXISTS has_autoplaylist;
+ALTER TABLE cc_show DROP COLUMN IF EXISTS autoplaylist_id;

airtime_mvc/application/controllers/upgrade_sql/airtime_3.0.0-alpha/upgrade.sql

@@ -1,3 +1,3 @@
-ALTER TABLE cc_show ADD COLUMN has_autoplaylist boolean default 'f' NOT NULL
-ALTER TABLE cc_show ADD COLUMN autoplaylist_id integer DEFAULT NULL
-ALTER TABLE cc_show_instances ADD COLUMN autoplaylist_built boolean default 'f' NOT NULL
+ALTER TABLE cc_show ADD COLUMN has_autoplaylist boolean default 'f' NOT NULL;
+ALTER TABLE cc_show ADD COLUMN autoplaylist_id integer DEFAULT NULL;
+ALTER TABLE cc_show_instances ADD COLUMN autoplaylist_built boolean default 'f' NOT NULL;

airtime_mvc/application/upgrade/Upgrades.php

@@ -501,3 +501,16 @@ class AirtimeUpgrader2516 extends AirtimeUpgrader
         return '2.5.16';
     }
 }
+
+class AirtimeUpgrader300alpha extends AirtimeUpgrader
+{
+    protected function getSupportedSchemaVersions() {
+        return array(
+            '2.5.16'
+        );
+    }
+
+    public function getNewVersion() {
+        return '3.0.0-alpha';
+    }
+}