Create DB Connection wrapper and DB\Adapter* classes

lib/db.php

@@ -129,6 +129,7 @@ class OC_DB {
 							'path' => $datadir.'/'.$name.'.db',
 							'driver' => 'pdo_sqlite',
 					);
+					$connectionParams['adapter'] = '\OC\DB\AdapterSqlite';
 					break;
 				case 'mysql':
 					$connectionParams = array(
@@ -140,6 +141,7 @@ class OC_DB {
 							'charset' => 'UTF8',
 							'driver' => 'pdo_mysql',
 					);
+					$connectionParams['adapter'] = '\OC\DB\Adapter';
 					break;
 				case 'pgsql':
 					$connectionParams = array(
@@ -150,6 +152,7 @@ class OC_DB {
 							'dbname' => $name,
 							'driver' => 'pdo_pgsql',
 					);
+					$connectionParams['adapter'] = '\OC\DB\AdapterPgSql';
 					break;
 				case 'oci':
 					$connectionParams = array(
@@ -163,6 +166,7 @@ class OC_DB {
 					if (!empty($port)) {
 						$connectionParams['port'] = $port;
 					}
+					$connectionParams['adapter'] = '\OC\DB\AdapterOCI8';
 					break;
 				case 'mssql':
 					$connectionParams = array(
@@ -174,10 +178,12 @@ class OC_DB {
 							'charset' => 'UTF8',
 							'driver' => 'pdo_sqlsrv',
 					);
+					$connectionParams['adapter'] = '\OC\DB\AdapterSQLSrv';
 					break;
 				default:
 					return false;
 			}
+			$connectionParams['wrapperClass'] = 'OC\DB\Connection';
 			try {
 				self::$DOCTRINE = \Doctrine\DBAL\DriverManager::getConnection($connectionParams, $config);
 			} catch(\Doctrine\DBAL\DBALException $e) {

lib/db/adapter.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\DB;
+
+class Adapter {
+	protected $conn;
+
+	public function __construct($conn) {
+		$this->conn = $conn;
+	}
+}

lib/db/adapteroci8.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+
+namespace OC\DB;
+
+class AdapterOCI8 extends Adapter {
+}

lib/db/adapterpgsql.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+
+namespace OC\DB;
+
+class AdapterPgSql extends Adapter {
+}

lib/db/adaptersqlite.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+
+namespace OC\DB;
+
+class AdapterSqlite extends Adapter {
+}

lib/db/adaptersqlsrv.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+
+namespace OC\DB;
+
+class AdapterSQLSrv extends Adapter {
+}

lib/db/connection.php

+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\DB;
+use Doctrine\DBAL\Driver;
+use Doctrine\DBAL\Configuration;
+use Doctrine\DBAL\Cache\QueryCacheProfile;
+use Doctrine\Common\EventManager;
+
+class Connection extends \Doctrine\DBAL\Connection {
+	protected $table_prefix;
+	protected $sequence_suffix;
+
+	protected $adapter;
+
+	/**
+	 * Initializes a new instance of the Connection class.
+	 *
+	 * @param array $params  The connection parameters.
+	 * @param Driver $driver
+	 * @param Configuration $config
+	 * @param EventManager $eventManager
+	 */
+	public function __construct(array $params, Driver $driver, Configuration $config = null,
+		EventManager $eventManager = null)
+	{
+		if (!isset($params['adapter'])) {
+			throw new Exception('adapter not set');
+		}
+		parent::__construct($params, $driver, $config, $eventManager);
+		$this->adapter = new $params['adapter']($this);
+	}
+
+	/**
+	 * Prepares an SQL statement.
+	 *
+	 * @param string $statement The SQL statement to prepare.
+	 * @return \Doctrine\DBAL\Driver\Statement The prepared statement.
+	 */
+	public function prepare( $statement, $limit=null, $offset=null ) {
+		// TODO: prefix
+		// TODO: limit & offset
+		// TODO: prepared statement cache
+		return parent::prepare($statement);
+	}
+
+	/**
+	 * 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 array $params The parameters to bind to the query, if any.
+	 * @param array $types The types the previous parameters are in.
+	 * @param QueryCacheProfile $qcp
+	 * @return \Doctrine\DBAL\Driver\Statement The executed statement.
+	 * @internal PERF: Directly prepares a driver statement, not a wrapper.
+	 */
+	public function executeQuery($query, array $params = array(), $types = array(), QueryCacheProfile $qcp = null)
+	{
+		// TODO: prefix
+		return parent::executeQuery($query, $params, $types, $qcp);
+	}
+
+	/**
+	 * 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 $types The parameter types.
+	 * @return integer The number of affected rows.
+	 * @internal PERF: Directly prepares a driver statement, not a wrapper.
+	 */
+	public function executeUpdate($query, array $params = array(), array $types = array())
+	{
+		// TODO: prefix
+		return parent::executeUpdate($query, $params, $types);
+	}
+}