/**
* Override addItem to not attempt to use item id as key, and to set item root and path.
* Also to ensure indexing on strings for safety with MongoId
*
* @param Varien_Object $item
* @return Cm_Mongo_Model_Resource_Collection_Embedded
*/
public function addItem(Varien_Object $item)
{
$index = count($this->_items);
$item->_setEmbeddedIn($this->_root, $this->_path . '.' . $index);
$itemId = $item->getIdFieldName() ? $this->_getItemKey($item->getId()) : NULL;
if ($itemId !== NULL) {
if (isset($this->_items[$itemId])) {
throw new Exception('Item (' . get_class($item) . ') with the same id "' . $item->getId() . '" already exist');
}
$this->_items[$itemId] = $item;
} else {
$this->_items[] = $item;
}
return $this;
}
