Re: efficient traversal of combined collections in XSL

> It doesn't work on the full data set; 16 GB of RAM isn't enough to do this to 4 GB of data.  Various wheels are in motion to get more RAM.

Have a look at saxon:discard-document()

http://saxonica.com/documentation9.4-demo/html/extensions/functions/discarddocument.html

"for $x in collection(....) return saxon:discard-document($x)"

Also, I'd separate out the process into two transforms, the first to
construct some xml containing document uris and the links, then the
2nd to check if the target exists.




-- 
Andrew Welch
http://andrewjwelch.com