132 lines
4.0 KiB
PHP
132 lines
4.0 KiB
PHP
<?php
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/**
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* Copyright (c) 2014 Andreas Fischer <bantu@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\DB;
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/**
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* Takes care of creating and configuring Doctrine connections.
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*/
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class ConnectionFactory {
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/**
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* @var array
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*
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* Array mapping DBMS type to default connection parameters passed to
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* \Doctrine\DBAL\DriverManager::getConnection().
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*/
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protected $defaultConnectionParams = array(
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'mssql' => array(
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'adapter' => '\OC\DB\AdapterSQLSrv',
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'charset' => 'UTF8',
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'driver' => 'pdo_sqlsrv',
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'wrapperClass' => 'OC\DB\Connection',
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),
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'mysql' => array(
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'adapter' => '\OC\DB\Adapter',
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'charset' => 'UTF8',
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'driver' => 'pdo_mysql',
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'wrapperClass' => 'OC\DB\Connection',
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),
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'oci' => array(
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'adapter' => '\OC\DB\AdapterOCI8',
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'charset' => 'AL32UTF8',
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'driver' => 'oci8',
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'wrapperClass' => 'OC\DB\OracleConnection',
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),
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'pgsql' => array(
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'adapter' => '\OC\DB\AdapterPgSql',
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'driver' => 'pdo_pgsql',
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'wrapperClass' => 'OC\DB\Connection',
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),
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'sqlite3' => array(
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'adapter' => '\OC\DB\AdapterSqlite',
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'driver' => 'pdo_sqlite',
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'wrapperClass' => 'OC\DB\Connection',
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),
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);
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/**
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* @brief Get default connection parameters for a given DBMS.
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* @param string $type DBMS type
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* @throws \InvalidArgumentException If $type is invalid
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* @return array Default connection parameters.
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*/
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public function getDefaultConnectionParams($type) {
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$normalizedType = $this->normalizeType($type);
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if (!isset($this->defaultConnectionParams[$normalizedType])) {
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throw new \InvalidArgumentException("Unsupported type: $type");
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}
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$result = $this->defaultConnectionParams[$normalizedType];
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// \PDO::MYSQL_ATTR_FOUND_ROWS may not be defined, e.g. when the MySQL
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// driver is missing. In this case, we won't be able to connect anyway.
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if ($normalizedType === 'mysql' && defined('\PDO::MYSQL_ATTR_FOUND_ROWS')) {
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$result['driverOptions'] = array(
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\PDO::MYSQL_ATTR_FOUND_ROWS => true,
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);
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}
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return $result;
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}
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/**
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* @brief Get default connection parameters for a given DBMS.
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* @param string $type DBMS type
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* @param array $additionalConnectionParams Additional connection parameters
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* @return \OC\DB\Connection
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*/
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public function getConnection($type, $additionalConnectionParams) {
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$normalizedType = $this->normalizeType($type);
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$eventManager = new \Doctrine\Common\EventManager();
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switch ($normalizedType) {
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case 'mysql':
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// Send "SET NAMES utf8". Only required on PHP 5.3 below 5.3.6.
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// See http://stackoverflow.com/questions/4361459/php-pdo-charset-set-names#4361485
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$eventManager->addEventSubscriber(new \Doctrine\DBAL\Event\Listeners\MysqlSessionInit);
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break;
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case 'oci':
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$eventManager->addEventSubscriber(new \Doctrine\DBAL\Event\Listeners\OracleSessionInit);
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break;
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}
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$connection = \Doctrine\DBAL\DriverManager::getConnection(
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array_merge($this->getDefaultConnectionParams($type), $additionalConnectionParams),
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new \Doctrine\DBAL\Configuration(),
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$eventManager
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);
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switch ($normalizedType) {
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case 'sqlite3':
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// Sqlite doesn't handle query caching and schema changes
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// TODO: find a better way to handle this
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/** @var $connection \OC\DB\Connection */
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$connection->disableQueryStatementCaching();
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break;
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case 'oci':
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// oracle seems to have issues with cached statements which have been closed
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/** @var $connection \OC\DB\Connection */
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$connection->disableQueryStatementCaching();
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break;
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}
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return $connection;
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}
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/**
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* @brief Normalize DBMS type
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* @param string $type DBMS type
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* @return string Normalized DBMS type
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*/
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public function normalizeType($type) {
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return $type === 'sqlite' ? 'sqlite3' : $type;
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}
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/**
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* @brief Checks whether the specified DBMS type is valid.
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* @return bool
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*/
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public function isValidType($type) {
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$normalizedType = $this->normalizeType($type);
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return isset($this->defaultConnectionParams[$normalizedType]);
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}
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}
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