Hi Alex,
So having the oxygen integration setup now, the next question that comes up which I'm not finding an answer for is can one use the EXPath File Module within xqueries in oxygen?
sure, this is no problems. You can use any module specified in our module library [1].
I'm googling around,, I gather only basex that has implemented it from the website. http://expath.org/modules/file/implems
I know there is at least one other implementation [2]. The spec. for the file module [3] is still pretty new, so more are expected to follow in the future.
I see that though that oxygen has a method to import modules but not sure where to get the module if that's the case. http://www.oxygenxml.com/xml_editor/xquery_editor.html
If you want to use other modules with BaseX, the most convenient way is to store them in the server-side repository [4]. You can directly edit XQuery modules in the repository directory without removing and reinstalling them.
Hope this helps, Christian
[1] http://docs.basex.org/wiki/Module_Library [2] http://www.zorba-xquery.com/html/modules/expath/file [3] http://expath.org/spec/file [4] http://docs.basex.org/wiki/Repository