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diff --git a/lib/private/db/compositeexpression.php b/lib/private/db/compositeexpression.php
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+<?php
+/**
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @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;
+
+use OCP\DB\ICompositeExpression;
+
+class CompositeExpression implements ICompositeExpression, \Countable {
+	/** @var \Doctrine\DBAL\Query\Expression\CompositeExpression */
+	protected $compositeExpression;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param \Doctrine\DBAL\Query\Expression\CompositeExpression $compositeExpression
+	 */
+	public function __construct(\Doctrine\DBAL\Query\Expression\CompositeExpression $compositeExpression) {
+		$this->compositeExpression = $compositeExpression;
+	}
+
+	/**
+	 * Adds multiple parts to composite expression.
+	 *
+	 * @param array $parts
+	 *
+	 * @return \OCP\DB\ICompositeExpression
+	 */
+	public function addMultiple(array $parts = array()) {
+		$this->compositeExpression->addMultiple($parts);
+
+		return $this;
+	}
+
+	/**
+	 * Adds an expression to composite expression.
+	 *
+	 * @param mixed $part
+	 *
+	 * @return \OCP\DB\ICompositeExpression
+	 */
+	public function add($part) {
+		$this->compositeExpression->add($part);
+
+		return $this;
+	}
+
+	/**
+	 * Retrieves the amount of expressions on composite expression.
+	 *
+	 * @return integer
+	 */
+	public function count() {
+		return $this->compositeExpression->count();
+	}
+
+	/**
+	 * Returns the type of this composite expression (AND/OR).
+	 *
+	 * @return string
+	 */
+	public function getType() {
+		return $this->compositeExpression->getType();
+	}
+
+	/**
+	 * Retrieves the string representation of this composite expression.
+	 *
+	 * @return string
+	 */
+	public function __toString()
+	{
+		return (string) $this->compositeExpression;
+	}
+}