Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace Illuminate\Database\Connectors;

use PDO;

class MySqlConnector extends Connector implements ConnectorInterface

{

    /**

     * Establish a database connection.

     *

     * @param  array  $config

     * @return \PDO

     */

    public function connect(array $config)

    {

        $dsn = $this->getDsn($config);

        $options = $this->getOptions($config);

        // We need to grab the PDO options that should be used while making the brand

        // new connection instance. The PDO options control various aspects of the

        // connection's behavior, and some might be specified by the developers.

        $connection = $this->createConnection($dsn, $config, $options);

        if (! empty($config['database'])) {

            $connection->exec("use `{$config['database']}`;");

        }

        $this->configureIsolationLevel($connection, $config);

        $this->configureEncoding($connection, $config);

        // Next, we will check to see if a timezone has been specified in this config

        // and if it has we will issue a statement to modify the timezone with the

        // database. Setting this DB timezone is an optional configuration item.

        $this->configureTimezone($connection, $config);

        $this->setModes($connection, $config);

        return $connection;

    }

    /**

     * Set the connection transaction isolation level.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return void

     */

    protected function configureIsolationLevel($connection, array $config)

    {

        if (! isset($config['isolation_level'])) {

            return;

        }

        $connection->prepare(

            "SET SESSION TRANSACTION ISOLATION LEVEL {$config['isolation_level']}"

        )->execute();

    }

    /**

     * Set the connection character set and collation.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return void|\PDO

     */

    protected function configureEncoding($connection, array $config)

    {

        if (! isset($config['charset'])) {

            return $connection;

        }

        $connection->prepare(

            "set names '{$config['charset']}'".$this->getCollation($config)

        )->execute();

    }

    /**

     * Get the collation for the configuration.

     *

     * @param  array  $config

     * @return string

     */

    protected function getCollation(array $config)

    {

        return isset($config['collation']) ? " collate '{$config['collation']}'" : '';

    }

    /**

     * Set the timezone on the connection.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return void

     */

    protected function configureTimezone($connection, array $config)

    {

        if (isset($config['timezone'])) {

            $connection->prepare('set time_zone="'.$config['timezone'].'"')->execute();

        }

    }

    /**

     * Create a DSN string from a configuration.

     *

     * Chooses socket or host/port based on the 'unix_socket' config value.

     *

     * @param  array  $config

     * @return string

     */

    protected function getDsn(array $config)

    {

        return $this->hasSocket($config)

                            ? $this->getSocketDsn($config)

                            : $this->getHostDsn($config);

    }

    /**

     * Determine if the given configuration array has a UNIX socket value.

     *

     * @param  array  $config

     * @return bool

     */

    protected function hasSocket(array $config)

    {

        return isset($config['unix_socket']) && ! empty($config['unix_socket']);

    }

    /**

     * Get the DSN string for a socket configuration.

     *

     * @param  array  $config

     * @return string

     */

    protected function getSocketDsn(array $config)

    {

        return "mysql:unix_socket={$config['unix_socket']};dbname={$config['database']}";

    }

    /**

     * Get the DSN string for a host / port configuration.

     *

     * @param  array  $config

     * @return string

     */

    protected function getHostDsn(array $config)

    {

        extract($config, EXTR_SKIP);

        return isset($port)

                    ? "mysql:host={$host};port={$port};dbname={$database}"

                    : "mysql:host={$host};dbname={$database}";

    }

    /**

     * Set the modes for the connection.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return void

     */

    protected function setModes(PDO $connection, array $config)

    {

        if (isset($config['modes'])) {

            $this->setCustomModes($connection, $config);

        } elseif (isset($config['strict'])) {

            if ($config['strict']) {

                $connection->prepare($this->strictMode($connection, $config))->execute();

            } else {

                $connection->prepare("set session sql_mode='NO_ENGINE_SUBSTITUTION'")->execute();

            }

        }

    }

    /**

     * Set the custom modes on the connection.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return void

     */

    protected function setCustomModes(PDO $connection, array $config)

    {

        $modes = implode(',', $config['modes']);

        $connection->prepare("set session sql_mode='{$modes}'")->execute();

    }

    /**

     * Get the query to enable strict mode.

     *

     * @param  \PDO  $connection

     * @param  array  $config

     * @return string

     */

    protected function strictMode(PDO $connection, $config)

    {

        $version = $config['version'] ?? $connection->getAttribute(PDO::ATTR_SERVER_VERSION);

        if (version_compare($version, '8.0.11') >= 0) {

            return "set session sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION'";

        }

        return "set session sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'";

    }

}