protected function _getOrdersItemsCollection($ordersIds, $excludeChildren = true, $event = null)
{
$items = Mage::getModel('sales/order_item')->getCollection()->addFieldToFilter('order_id', array('in' => array_unique($ordersIds)));
if ($excludeChildren) {
$items->filterByParent();
}
if (!empty($event)) {
$response = new Varien_Object(array('items_collection' => $items));
Mage::dispatchEvent($event, array('response' => $response));
$items = $response->getItemsCollection();
}
return $items->load();
}
