/**
* returns the maximum primary key value
*
* @return integer
*/
public final function getMaxIdentifier()
{
$sql = "SELECT MAX(" . $this->getIdentifier() . ") FROM " . $this->getTableName();
$stmt = $this->conn->getDBH()->query($sql);
$data = $stmt->fetch(PDO::FETCH_NUM);
return isset($data[0]) ? $data[0] : 1;
}
