public static function rowToItem($row, $itemName = null)
 {
     if (!$row) {
         return null;
     }
     if (!$itemName) {
         $itemName = Lms_Item::getCallingItemName();
     }
     Lms_Item::initStructure(Lms_Item::getClassName($itemName));
     $simplePk = Lms_Item::getSimplePk($itemName);
     $tableName = Lms_Item::getTableName($itemName);
     Lms_Item_Store::setValues($tableName, $row[$simplePk], $row, true);
     return Lms_Item::create($itemName, $row[$simplePk]);
 }
 private static function _exec($itemName, $fields, $keyField, $ids, $foreignKey = null)
 {
     if (!count($ids)) {
         return array();
     }
     if (count($fields)) {
         $escapedFields = array();
         foreach ($fields as $fieldName) {
             $escapedFields[] = self::$_db->escape($fieldName, true);
         }
         $sqlFields = implode(',', $escapedFields);
     } else {
         $sqlFields = '*';
     }
     $tableName = Lms_Item::getTableName($itemName);
     $query = "SELECT {$sqlFields} FROM {$tableName} WHERE ?# IN (?a)";
     $rows = self::$_db->select($query, $keyField, $ids);
     return self::_fillData($tableName, $rows, $foreignKey);
 }