Clone magic method.

Select queries have dependent objects that must be deep-cloned. The connection object itself, however, should not be cloned as that would duplicate the connection itself.

Overrides SelectQueryInterface::__clone

File

drupal-7.x/includes/database/select.inc, line 822

Class

SelectQueryExtender

The base extender class for Select queries.

Code

public function __clone() {
  $this->uniqueIdentifier = uniqid('', TRUE);

  // We need to deep-clone the query we're wrapping, which in turn may
  // deep-clone other objects.  Exciting!
  $this->query = clone($this->query);
}