/**
* Retrieves an associative array of primary keys.
*
* @param bool $useDirty
* @return array
*/
protected function _getPrimaryKey($useDirty = true)
{
$primary = array_flip($this->_table->getPrimary());
if ($useDirty) {
$array = array_intersect_key($this->getArrayCopy(), $primary);
} else {
$array = array_intersect_key($this->_cleanData + $this->getArrayCopy(), $primary);
}
if (count($primary) != count($array)) {
throw new DataObjectException("The specified Table '" . get_class($this->_table) . "' does not have the same primary key as the Row");
}
return $array;
}
