/**
* Protected support method for getHolding.
*
* @param array $id A Bibliographic id
*
* @return array Keyed data for use in an sql query
*/
protected function getHoldingItemsSQL($id)
{
$sqlArray = parent::getHoldingItemsSQL($id);
$sqlArray['expressions'][] = "ITEM.ITEM_TYPE_ID";
$sqlArray['expressions'][] = "ITEM.TEMP_ITEM_TYPE_ID";
return $sqlArray;
}
