OM extensions : how a loop on sales order lines is sorted by ?

Content

Hi all,

I have created an extension which loops on sales order lines with below classic code :

def lines = header.getAttribute("Lines");
while( lines.hasNext() ) {
   def line = lines.next();
   ....

Line 2 is fetched before line 1... How is it possible ? What the sort used by "next" to get line data ?
Is it possible to change that order (like an "ORDER BY")

Thanks
Samuel

Version

20C