Implement advanced search queries

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/Search/Query/StringQueryParameter.php

@@ -0,0 +1,39 @@
+<?php
+/*
+ * @copyright Copyright (c) 2021 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @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/>.
+ *
+ */
+
+declare(strict_types=1);
+
+
+namespace OCA\Deck\Search\Query;
+
+class StringQueryParameter extends AQueryParameter {
+	
+	/** @var string */
+	protected $value;
+	
+	public function __construct(string $field, int $comparator, string $value) {
+		$this->field = $field;
+		$this->comparator = $comparator;
+		$this->value = $value;
+	}
+}