1 files changed, 55 insertions, 0 deletions
diff --git a/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php b/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php
new file mode 100644
index 00000000000..61d32d09a62
--- /dev/null
+++ b/lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * @author Robin Appelman <robin@icewind.nl>
+ *
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OC\DB\QueryBuilder\FunctionBuilder;
+
+use OC\DB\QueryBuilder\QueryFunction;
+use OC\DB\QueryBuilder\QuoteHelper;
+use OCP\DB\QueryBuilder\IFunctionBuilder;
+
+class FunctionBuilder implements IFunctionBuilder {
+	/** @var QuoteHelper */
+	protected $helper;
+
+	/**
+	 * ExpressionBuilder constructor.
+	 *
+	 * @param QuoteHelper $helper
+	 */
+	public function __construct(QuoteHelper $helper) {
+		$this->helper = $helper;
+	}
+
+	public function md5($input) {
+		return new QueryFunction('MD5(' . $this->helper->quoteColumnName($input) . ')');
+	}
+
+	public function concat($x, $y) {
+		return new QueryFunction('CONCAT(' . $this->helper->quoteColumnName($x) . ', ' . $this->helper->quoteColumnName($y) . ')');
+	}
+
+	public function substring($input, $start, $length = null) {
+		if ($length) {
+			return new QueryFunction('SUBSTR(' . $this->helper->quoteColumnName($input) . ', ' . $this->helper->quoteColumnName($start) . ', ' . $this->helper->quoteColumnName($length) . ')');
+		} else {
+			return new QueryFunction('SUBSTR(' . $this->helper->quoteColumnName($input) . ', ' . $this->helper->quoteColumnName($start) . ')');
+		}
+	}
+}