1 files changed, 42 insertions, 0 deletions
diff --git a/lib/private/Files/Search/QueryOptimizer/QueryOptimizerStep.php b/lib/private/Files/Search/QueryOptimizer/QueryOptimizerStep.php
new file mode 100644
index 00000000000..15b5b580ec1
--- /dev/null
+++ b/lib/private/Files/Search/QueryOptimizer/QueryOptimizerStep.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\Files\Search\QueryOptimizer;
+
+use OCP\Files\Search\ISearchBinaryOperator;
+use OCP\Files\Search\ISearchOperator;
+
+class QueryOptimizerStep {
+	/**
+	 * Allow optimizer steps to inspect the entire query before starting processing
+	 *
+	 * @param ISearchOperator $operator
+	 * @return void
+	 */
+	public function inspectOperator(ISearchOperator $operator): void {
+		if ($operator instanceof ISearchBinaryOperator) {
+			foreach ($operator->getArguments() as $argument) {
+				$this->inspectOperator($argument);
+			}
+		}
+	}
+
+	/**
+	 * Allow optimizer steps to modify query operators
+	 *
+	 * @param ISearchOperator $operator
+	 * @return void
+	 */
+	public function processOperator(ISearchOperator &$operator) {
+		if ($operator instanceof ISearchBinaryOperator) {
+			foreach ($operator->getArguments() as $argument) {
+				$this->processOperator($argument);
+			}
+		}
+	}
+}