public function Select::extend

Enhance this object by wrapping it in an extender object.

Parameters

$extender_name: The base name of the extending class. The base name will be checked against the current database connection to allow driver-specific subclasses as well, using the same logic as the query objects themselves.

Return value

Drupal\Core\Database\Query\ExtendableInterface The extender object, which now contains a reference to this object.

Overrides ExtendableInterface::extend

File

drupal/core/lib/Drupal/Core/Database/Query/Select.php, line 295

Definition of Drupal\Core\Database\Query\Select

Class

Select

Query builder for SELECT statements.

Namespace

Code

public function extend($extender_name) {
  $override_class = $extender_name . '_' . $this->connection
    ->driver();
  if (class_exists($override_class)) {
    $extender_name = $override_class;
  }
  return new $extender_name($this, $this->connection);
}