Seperate query classes from xml classes to allow specifying more information in the query

src/Query/Order.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace SearchDAV\Query;
+
+
+use SearchDAV\Backend\SearchPropertyDefinition;
+
+class Order {
+	const ASC = 'ascending';
+	const DESC = 'descending';
+
+	/**
+	 * @var SearchPropertyDefinition
+	 *
+	 * The property that should be sorted on.
+	 */
+	public $property;
+	/**
+	 * @var string 'ascending' or 'descending'
+	 *
+	 * The sort direction
+	 */
+	public $order;
+
+	/**
+	 * Order constructor.
+	 * @param SearchPropertyDefinition $property
+	 * @param string $order
+	 */
+	public function __construct(SearchPropertyDefinition $property, $order) {
+		$this->property = $property;
+		$this->order = $order;
+	}
+}