/**
* Returns an array of components to execute the query callbacks for
*
* @param array $params
* @return array $components
*/
protected function _getDqlCallbackComponents($params = array())
{
$componentsBefore = array();
if ($this->isSubquery()) {
$componentsBefore = $this->getQueryComponents();
}
$copy = $this->copy();
$copy->getSqlQuery($params, false);
$componentsAfter = $copy->getQueryComponents();
$this->_rootAlias = $copy->getRootAlias();
$copy->free();
if ($componentsBefore !== $componentsAfter) {
return Doctrine_Lib::arrayDiffSimple($componentsAfter, $componentsBefore);
} else {
return $componentsAfter;
}
}