change field.aggregable from bool to int -> allows to set the number of aggregation values

lib/classes/patch/390alpha22a.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2015 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Alchemy\Phrasea\Application;
+
+class patch_390alpha22a implements patchInterface
+{
+    /** @var string */
+    private $release = '3.9.0-alpha.22';
+
+    /** @var array */
+    private $concern = [base::DATA_BOX];
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get_release()
+    {
+        return $this->release;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDoctrineMigrations()
+    {
+        return [];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function require_all_upgrades()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function concern()
+    {
+        return $this->concern;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(base $databox, Application $app)
+    {
+        $sql = "UPDATE metadatas_structure SET `aggregable`=20 WHERE `aggregable`=1";
+        $stmt = $databox->get_connection()->prepare($sql);
+        $stmt->execute();
+
+        return true;
+    }
+}