1 files changed, 36 insertions, 0 deletions
diff --git a/core/Updates.php b/core/Updates.php
new file mode 100644
index 0000000000..3d5e4df537
--- /dev/null
+++ b/core/Updates.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
+ * @version $Id$
+ *
+ * @category Piwik
+ * @package Piwik
+ */
+
+/**
+ * Abstract class for update scripts
+ *
+ * @example core/Updates/0.4.2.php
+ * @package Piwik
+ */
+abstract class Piwik_Updates
+{
+	/**
+	 * Return SQL to be executed in this update
+	 *
+	 * @param string Adapter name
+	 * @return array
+	 */
+	static function getSql($adapter = 'PDO_MYSQL')
+	{
+		return array();
+	}
+
+	/**
+	 * Incremental version update
+	 */
+	abstract static function update();
+}