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diff --git a/lib/private/AppFramework/Db/Db.php b/lib/private/AppFramework/Db/Db.php
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+<?php
+/**
+ * @author Bernhard Posselt <dev@bernhard-posselt.com>
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, 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\AppFramework\Db;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDb;
+use OCP\IDBConnection;
+
+/**
+ * @deprecated use IDBConnection directly, will be removed in ownCloud 10
+ * Small Facade for being able to inject the database connection for tests
+ */
+class Db implements IDb {
+	/**
+	 * @var IDBConnection
+	 */
+	protected $connection;
+
+	/**
+	 * @param IDBConnection $connection
+	 */
+	public function __construct(IDBConnection $connection) {
+		$this->connection = $connection;
+	}
+
+	/**
+	 * Gets the ExpressionBuilder for the connection.
+	 *
+	 * @return \OCP\DB\QueryBuilder\IQueryBuilder
+	 */
+	public function getQueryBuilder() {
+		return $this->connection->getQueryBuilder();
+	}
+
+	/**
+	 * Used to abstract the ownCloud database access away
+	 *
+	 * @param string $sql the sql query with ? placeholder for params
+	 * @param int $limit the maximum number of rows
+	 * @param int $offset from which row we want to start
+	 * @deprecated use prepare instead, will be removed in ownCloud 10
+	 * @return \OC_DB_StatementWrapper prepared SQL query
+	 */
+	public function prepareQuery($sql, $limit = null, $offset = null) {
+		$isManipulation = \OC_DB::isManipulation($sql);
+		$statement = $this->connection->prepare($sql, $limit, $offset);
+		return new \OC_DB_StatementWrapper($statement, $isManipulation);
+	}
+
+
+	/**
+	 * Used to get the id of the just inserted element
+	 *
+	 * @deprecated use lastInsertId instead, will be removed in ownCloud 10
+	 * @param string $tableName the name of the table where we inserted the item
+	 * @return int the id of the inserted element
+	 */
+	public function getInsertId($tableName) {
+		return $this->connection->lastInsertId($tableName);
+	}
+
+	/**
+	 * Used to abstract the ownCloud database access away
+	 * @param string $sql the sql query with ? placeholder for params
+	 * @param int $limit the maximum number of rows
+	 * @param int $offset from which row we want to start
+	 * @return \Doctrine\DBAL\Driver\Statement The prepared statement.
+	 */
+	public function prepare($sql, $limit=null, $offset=null) {
+		return $this->connection->prepare($sql, $limit, $offset);
+	}
+
+	/**
+	 * Executes an, optionally parameterized, SQL query.
+	 *
+	 * If the query is parameterized, a prepared statement is used.
+	 * If an SQLLogger is configured, the execution is logged.
+	 *
+	 * @param string $query The SQL query to execute.
+	 * @param string[] $params The parameters to bind to the query, if any.
+	 * @param array $types The types the previous parameters are in.
+	 * @return \Doctrine\DBAL\Driver\Statement The executed statement.
+	 */
+	public function executeQuery($query, array $params = array(), $types = array()) {
+		return $this->connection->executeQuery($query, $params, $types);
+	}
+
+	/**
+	 * Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
+	 * and returns the number of affected rows.
+	 *
+	 * This method supports PDO binding types as well as DBAL mapping types.
+	 *
+	 * @param string $query The SQL query.
+	 * @param array $params The query parameters.
+	 * @param array $types The parameter types.
+	 * @return integer The number of affected rows.
+	 */
+	public function executeUpdate($query, array $params = array(), array $types = array()) {
+		return $this->connection->executeUpdate($query, $params, $types);
+	}
+
+	/**
+	 * Used to get the id of the just inserted element
+	 * @param string $table the name of the table where we inserted the item
+	 * @return int the id of the inserted element
+	 */
+	public function lastInsertId($table = null) {
+		return $this->connection->lastInsertId($table);
+	}
+
+	/**
+	 * Insert a row if the matching row does not exists.
+	 *
+	 * @param string $table The table name (will replace *PREFIX* with the actual prefix)
+	 * @param array $input data that should be inserted into the table  (column name => value)
+	 * @param array|null $compare List of values that should be checked for "if not exists"
+	 *				If this is null or an empty array, all keys of $input will be compared
+	 *				Please note: text fields (clob) must not be used in the compare array
+	 * @return int number of inserted rows
+	 * @throws \Doctrine\DBAL\DBALException
+	 */
+	public function insertIfNotExist($table, $input, array $compare = null) {
+		return $this->connection->insertIfNotExist($table, $input, $compare);
+	}
+
+	/**
+	 * Insert or update a row value
+	 *
+	 * @param string $table
+	 * @param array $keys (column name => value)
+	 * @param array $values (column name => value)
+	 * @param array $updatePreconditionValues ensure values match preconditions (column name => value)
+	 * @return int number of new rows
+	 * @throws \Doctrine\DBAL\DBALException
+	 * @throws PreconditionNotMetException
+	 */
+	public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
+		return $this->connection->setValues($table, $keys, $values, $updatePreconditionValues);
+	}
+
+	/**
+	 * Start a transaction
+	 */
+	public function beginTransaction() {
+		$this->connection->beginTransaction();
+	}
+
+	/**
+	 * Check if a transaction is active
+	 *
+	 * @return bool
+	 */
+	public function inTransaction() {
+		return $this->connection->inTransaction();
+	}
+
+	/**
+	 * Commit the database changes done during a transaction that is in progress
+	 */
+	public function commit() {
+		$this->connection->commit();
+	}
+
+	/**
+	 * Rollback the database changes done during a transaction that is in progress
+	 */
+	public function rollBack() {
+		$this->connection->rollBack();
+	}
+
+	/**
+	 * Gets the error code and message as a string for logging
+	 * @return string
+	 */
+	public function getError() {
+		return $this->connection->getError();
+	}
+
+	/**
+	 * Fetch the SQLSTATE associated with the last database operation.
+	 *
+	 * @return integer The last error code.
+	 */
+	public function errorCode() {
+		return $this->connection->errorCode();
+	}
+
+	/**
+	 * Fetch extended error information associated with the last database operation.
+	 *
+	 * @return array The last error information.
+	 */
+	public function errorInfo() {
+		return $this->connection->errorInfo();
+	}
+
+	/**
+	 * Establishes the connection with the database.
+	 *
+	 * @return bool
+	 */
+	public function connect() {
+		return $this->connection->connect();
+	}
+
+	/**
+	 * Close the database connection
+	 */
+	public function close() {
+		$this->connection->close();
+	}
+
+	/**
+	 * Quotes a given input parameter.
+	 *
+	 * @param mixed $input Parameter to be quoted.
+	 * @param int $type Type of the parameter.
+	 * @return string The quoted parameter.
+	 */
+	public function quote($input, $type = IQueryBuilder::PARAM_STR) {
+		return $this->connection->quote($input, $type);
+	}
+
+	/**
+	 * Gets the DatabasePlatform instance that provides all the metadata about
+	 * the platform this driver connects to.
+	 *
+	 * @return \Doctrine\DBAL\Platforms\AbstractPlatform The database platform.
+	 */
+	public function getDatabasePlatform() {
+		return $this->connection->getDatabasePlatform();
+	}
+
+	/**
+	 * Drop a table from the database if it exists
+	 *
+	 * @param string $table table name without the prefix
+	 */
+	public function dropTable($table) {
+		$this->connection->dropTable($table);
+	}
+
+	/**
+	 * Check if a table exists
+	 *
+	 * @param string $table table name without the prefix
+	 * @return bool
+	 */
+	public function tableExists($table) {
+		return $this->connection->tableExists($table);
+	}
+
+	/**
+	 * Espace a parameter to be used in a LIKE query
+	 *
+	 * @param string $param
+	 * @return string
+	 */
+	public function escapeLikeParameter($param) {
+		return $this->connection->escapeLikeParameter($param);
+	}
+}