function Database::openConnection

Opens a connection to the server specified by the given key and target.

Parameters

string $key: The database connection key, as specified in settings.php. The default is "default".

string $target: The database target to open.

Throws

\Drupal\Core\Database\ConnectionNotDefinedException

\Drupal\Core\Database\DriverNotSpecifiedException

1 call to Database::openConnection()

Database::getConnection in core/lib/Drupal/Core/Database/Database.php

Gets the connection object for the specified database key and target.

File

core/lib/Drupal/Core/Database/Database.php, line 404

Class

Database

Primary front-controller for the database system.

Namespace

Drupal\Core\Database

Code

protected static final function openConnection($key, $target) {
    // If the requested database does not exist then it is an unrecoverable
    // error.
    if (!isset(self::$databaseInfo[$key])) {
        throw new ConnectionNotDefinedException('The specified database connection is not defined: ' . $key);
    }
    if (!self::$databaseInfo[$key][$target]['driver']) {
        throw new DriverNotSpecifiedException('Driver not specified for this database connection: ' . $key);
    }
    $driver_class = self::$databaseInfo[$key][$target]['namespace'] . '\\Connection';
    $client_connection = $driver_class::open(self::$databaseInfo[$key][$target]);
    $new_connection = new $driver_class($client_connection, self::$databaseInfo[$key][$target]);
    $new_connection->setTarget($target);
    $new_connection->setKey($key);
    // If we have any active logging objects for this connection key, we need
    // to associate them with the connection we just opened.
    if (!empty(self::$logs[$key])) {
        $new_connection->enableEvents(StatementEvent::all());
        $new_connection->setLogger(self::$logs[$key]);
    }
    return $new_connection;
}