DB_DataObject Can getLink() return child class of DB_DataObject

Is there an existing way to have getlink() return a child class of DB_DataObject? I was going to extend the getLink() to allow this but wanted some feedback first. Also, is there a better way to do this? ie. require_once 'DataObjects/Odb_item_line.php'; class ODBItemLine extends DataObjects_Odb_item_line { public function getDescription() { $item = $this->getLink('odbItemId'); //returns wrong type!

	  return $item->toString();             //WILL NOT WORK!!

} } require_once 'DataObjects/Odb_item.php'; class ODBItem extends DataObjects_Odb_item { /** @return string String representation of item. * This can change based on various properties. */ public function toString() { //Fancy logic to calculate the name goes here... return $itemName; } } One way around this: Put my extended code directly into the Auto-Generated class. But this ties my class names to closely to the table names. I like the extra degree of space I get when extending each class myself. I would also have to use the factory method of instantiation which for some reason I was trying to avoid... Thanks in advance. -Ben Ford