xquery version "1.0";

declare namespace echo="http://www.mpiwg-berlin.mpg.de/ns/echo/1.0/";
declare namespace exist="http://exist.sourceforge.net/NS/exist";
declare namespace util = "http://exist-db.org/xquery/util";
declare namespace ft = "http://exist-db.org/xquery/lucene";


let $coll := collection("/db/mpdl/documents/standard/archimedes/la")
let $doc := doc("/db/mpdl/documents/standard/echo/zh/SongYingxing_1637.xml")
let $pn := 300
let $xpathQuery := "//place"

let $pageBreaks := $doc//echo:pb
let $pb1 := subsequence($pageBreaks, $pn, 1)
let $pb2 := subsequence($pageBreaks, $pn + 1, 1)
let $pageFragment := 
  if ($pn != -1)
  then util:get-fragment-between($pb1, $pb2, true())
  else ()
let $fragmentNode := util:parse($pageFragment)

let $bla := <blu><bla><place>1</place><place>2</place></bla></blu>
let $tmpFragmentNode := util:eval-inline($fragmentNode, ".")

let $result := util:eval-inline($doc, "let $a := //echo:metadata let $b := for $elem in $a let $bla := $elem return $bla return $b")
let $result2 := util:eval-inline($bla, "bla/place")
let $result3 := util:eval-inline($fragmentNode, "let $a := .//place return $a")
let $result4 := util:eval-inline($tmpFragmentNode, ".//place")
let $result5 := util:eval-inline($fragmentNode, concat (".", $xpathQuery))
let $result6 := util:eval-inline($doc, "util:node-id(//echo:metadata)")
let $result7 := util:eval-inline($bla, "let $a := .//place let $b := for $elem in $a let $bla := $elem return $bla return $b")
let $result8 := util:eval-inline($doc, "let $a := .//echo:place let $b := for $elem at $i in $a let $bla := concat($i, '. Place: ', $elem, ' (Level: ', util:node-id($elem), ', ', util:node-xpath($elem), ')') return $bla return $b")


return $result8