Add reconnectable statement

lib/classes/connection/statement.php

@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2014 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+interface connection_statement
+{
+    public function execute($params = array());
+    public function getQueryString();
+}