BTW: I was pleasantly surprised to discover that when I made a BaseX database with an ePub zip file, and selected the appropriate options ( Parse files in archives, add other files as raw files ) I was able to serve and view the ePub files thru the rest interface, and links from the TOC to other document parts, as well as images in the ePUB all worked.
I’m also enjoying learning to use some of the higher order function capabilities of XQuery 3.1 .
The arrow syntax and the partial function application seem to be a great way to build a pipelines of transforms that can mix xslt:transform with XQuery functions .
The results here aren’t very useful — I was just learning and testing the syntax, but this uses the partial application ‘?’ Syntax to convert functions of N-args to functions of 1 arg, and build a list of 1-arg functions to feed to fold-left. The use case would be to create a map of lists of pipeline functions to be applied for different targets.
Not sure if maintaining pipeline lists is a better way to manage this than just building pipelines using arrow => operator, but I was just trying to explore some of the possible methods.
let $docid := 'SIB/sibv060.xml' let $t1 := xslt:transform( ?, "/projects/SIB/add_id_bov.xsl" ) let $t2 := xslt:transform( ?, "/projects/XTF/xtf.lib/style/dynaXML/docFormatter/tei/teiDocFormatter.xsl", map{ 'docId' : $docid }) let $t3 := function($in) { $in//* } let $pipe := ( $t1, $t2, $t3, function($x) { $x ! name(.) }, distinct-values#1 ) let $chain := function( $a, $b ) { $b($a) } return fold-left( $pipe, doc($docid) , $chain )