index-processor.xqm

xquery version "3.1";
(:~
: This module prepares the index html.
: It is used for preparing a cached version and also called when preparing
: the index for a single notebook.
: The corresponding viewer module is `index-viewer.xqm`.
: @author Mathias Göbel
: @version 1.0
: @see https://fontane-nb.dariah.eu/register.html
:)
module namespace ixp="http://fontane-nb.dariah.eu/index-processor";
import module namespace code="http://bdn-edition.de/ns/code-view";
import module namespace config="http://textgrid.de/ns/SADE/config" at "../config/config.xqm";
import module namespace f-misc="http://fontane-nb.dariah.eu/ns/SADE/misc" at "misc.xqm";
import module namespace functx="http://www.functx.com";


declare namespace foaf="http://xmlns.com/foaf/0.1/";
declare namespace gndo="http://d-nb.info/standards/elementset/gnd#";
declare namespace ore="http://www.openarchives.org/ore/terms/";
declare namespace rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
declare namespace tei="http://www.tei-c.org/ns/1.0";
declare namespace tgmd="http://textgrid.info/namespaces/metadata/core/2010";
declare namespace xhtml="http://www.w3.org/1999/xhtml";

declare variable $ixp:metaCollection := '/db/sade-projects/textgrid/data/xml/meta/';
declare variable $ixp:targetStart := "http://textgridrep.org/textgrid:";
(: try/catch here, to pass the tests when no request object is available :)
declare variable $ixp:getEntity := try {request:get-parameter('e', '')} catch * {""};
declare variable $ixp:getIndex := try {request:get-parameter('i', '')} catch * {""};
declare variable $ixp:notebookParam := try {request:get-parameter('nb', '')} catch * {""};
declare variable $ixp:getNotebook := $ixp:targetStart || $ixp:notebookParam;

declare variable $ixp:dataPath := '/db/sade-projects/textgrid/data/xml/data/';
declare variable $ixp:dataCollection := collection($ixp:dataPath);

declare variable $ixp:BeaconMap := map:merge((
        ixp:beacon-parser(xs:anyURI("http://www.historische-kommission-muenchen-editionen.de/beacon_db_register.txt")),
        ixp:beacon-parser(xs:anyURI("http://www.historische-kommission-muenchen-editionen.de/beacon_ndb.txt")),
        ixp:beacon-parser(xs:anyURI("http://www.historische-kommission-muenchen-editionen.de/beacon_adb.txt"))
        ));
(:~
 : Helper function to collect all main nodes from the index files.
:)
declare function ixp:getNodes()
as array(*) {
let $agg := '253st.xml' (: TextGrid Aggregation containing all index files :)
let $uris := (doc('/db/sade-projects/textgrid/data/xml/agg/' || $agg)
          //ore:aggregates/substring-after(@rdf:resource, 'textgrid:')
        )[. != "25547"] (: omit the bibliography here :)
let $docs := $uris ! doc($ixp:dataPath || . || '.xml')

return
    [
    $docs//tei:body/tei:listEvent,
    $docs//tei:body/tei:listOrg,
    $docs//tei:body/tei:listPerson,
    $docs//tei:body/tei:listPlace,
    $docs//tei:body//tei:list[@type="works"],
    $docs//tei:body//tei:list[@type="periodicals"],
    $docs//tei:body//tei:list[@type="Fontane"]
    ]
};

(:~
 : the list type an entity is listed in.
 : This is used when preparing the html resource name.
 : @param $entity – on of tei:item, tei:place, tei:person, tei:gersonGrp,
 : tei:event or tei:org
 : @return on of listEvent, listOrg, listPlace, listPerson, list-works,
 : list-Fontane, list-periodicals
 :)
declare function ixp:get-list-by-entity($entity as node()?)
as xs:string {
switch ( $entity/local-name() )
    case "event" return "listEvent"
    case "org" return "listOrg"
    case "person" return
        if($entity/ancestor::tei:item)
        then ixp:get-list-by-entity( $entity/ancestor::tei:item[last()] )
        else "listPerson"
    case "personGrp" return
        if($entity/ancestor::tei:item)
        then ixp:get-list-by-entity( $entity/ancestor::tei:item[last()] )
        else "listPerson"
    case "place" return "listPlace"
    default return
        let $list := ($entity/ancestor::tei:list[@type])[last()]
        return
            $list/local-name() || "-" || string($list/@type)
};

declare function ixp:get-icon-by-entity($entity as node())
as xs:string {
switch ( $entity/local-name() )
    case "event" return "fa-flag"
    case "org" return "fa-university"
    case "person" return "fa-user"
    case "personGrp" return "fa-users"
    case "place" return "fa-map-marker"
    case "item" return "fa-book"
    default return
        "fa-exclamation-triangle"
};

(:~
 : Helper function to use an efficient map data type to store the model.
 :)
declare function ixp:main-map($index as xs:string+)
as map() {
let $nodes := ixp:getNodes()
return
map:new(
    for $n in 1 to array:size($nodes)
    let $node := $nodes?($n)
    let $localId := string-join(($node/local-name(), $node/@type), "-")
    let $content :=
        for $node in $node return
        switch ($node/local-name())
            case "listEvent" return
                if($index = "listEvent") then ixp:events($node) else ()
            case "listOrg" return
                if($index = "listOrg") then ixp:orgs($node) else ()
            case "listPerson" return
                if($index = "listPerson") then ixp:persons($node) else ()
            case "listPlace" return
                if($index = "listPlace") then ixp:places($node) else ()
            case "list" return
                ixp:works($node)
            default return error(QName("FONTANE", "INDEX1"), "unknown node-name: " || $node/local-name())
    return
        map:entry(
            $localId,
            map:new((
                map:entry("content", $content)
            ))
        )
    )
};

declare function ixp:main-map()
as map() {
    ixp:main-map(("listEvent", "listOrg", "listPerson", "listPlace", "list-"))
};

(:~
 : Main function to create a complete index, contains some template specific
 : code.
 :   :)
declare function ixp:register()
as element(xhtml:div)+ {
let $map := ixp:main-map()
return
    $map?*?("content")
};

(:~
 : Main function to create a complete index, contains some template specific
 : code.
 :   :)
declare function ixp:register($index as xs:string?)
as element(xhtml:div)+ {
let $map := ixp:main-map($index)
return
    $map?*?("content")
};

(:~
 : helper function to get the tgmd:title by URI
 : @param – $uri the textgrid-URI without prefix
 : TODO: may this function should be placed in a generic module
 :  :)
declare function ixp:resolve-name($uri as xs:string)
as xs:string {
    let $title := string(doc($ixp:metaCollection || $uri || '.xml')//tgmd:title)
    return
        if($title = "")
        then $uri
        else $title
};

(:~
 : tests for a given ID to appear in all @xml:id in a given node
 : @param – $id the id to search for
 : @param – $node the document or xml fragment
 : :)
declare function ixp:check-active($id as xs:string, $node as element(*)+)
as xs:boolean {
    exists($node/id($id))
};

(:~
 : checks if a target entity is in the current node set
 : @param $node – any node set
 :   :)
declare function ixp:check-entity($node as node()+)
as xs:string? {
    if(ixp:check-active($ixp:getEntity, $node))
    then "active"
    else ()
};

(:~
 : creates a generic xhtml:class attribute mandatory for every entry
 : @param $id – ID to check for
 :  :)
declare function ixp:entry-class($id as attribute(xml:id))
as attribute(class)? {
    attribute class {
        "registerEintrag",
        $id/parent::*/local-name()
    }
};

(:~
 : creates a list for label or name
 : @param $variant – a tei element containing any secondary label or name variant
 :)
declare function ixp:variant($variant as element()*)
as element(xhtml:li)? {
if(not(exists($variant))) then () else
    element xhtml:li {
        attribute class { "variant" },
        "Im Text: ",
        element xhtml:ul {
            for $var at $pos in $variant
            return
                element xhtml:li {
                    string($var) || (if($pos = count($variant)) then () else ",")
                }
        }
    }
};

(:~
 : transforms tei:idno to xhtml:li
 : @param $idnos – tei element (idno and label) with reference to authority file
 : TODO: declare element(tei:idno), currently wrong encoding with tei:label
 :  :)
declare function ixp:idno($idnos as element()*)
as element(xhtml:li)* {
for $idno in $idnos
let $str := string($idno)
let $wikipedia :=
  if($idno/@type = "GND") then ixp:gnd-wikipedia($str) else
  if($idno/@type = "Wikidata") then ixp:wikidata-wikipedia($str) else ()
return
    element xhtml:li {
        attribute class {"idno"},
        string($idno/@type) || ": " || $str,
        " ",
        element xhtml:a {
            attribute href { string($idno/@xml:base) || $str },
            <xhtml:i title="Link zu externer Ressource" class="fa fa-external-link"></xhtml:i>
        },
        (: Deutsche Biografie :)
        if($idno/parent::tei:person and $ixp:BeaconMap($str))
        then
          (",&#160;",
            let $url := $ixp:BeaconMap($str)
            return
              element xhtml:a {
                attribute title {
                    if(ends-with($url, "adbcontent"))
                    then "ADB-Eintrag basierend auf GND"
                    else if (ends-with($url, "ndbcontent"))
                    then "NDB-Eintrag basierend auf GND"
                    else "Eintrag in Deutscher Biografie basierend auf GND"
                },
                attribute href {$url},
                if(ends-with($url, "adbcontent"))
                then "ADB"
                else if (ends-with($url, "ndbcontent"))
                then "NDB"
                else "DB"
            })
        else (),
        if(string($wikipedia) = "") then ()
        else (",&#160;",
            element xhtml:a {
                attribute title {"Link zu Wikipedia basierend auf GND"},
                attribute href { $wikipedia },
                <i class="fa fa-wikipedia-w" aria-hidden="true"></i>
            })
    }
};

declare function ixp:gnd-wikipedia($gndid-orig as xs:string)
as xs:string?{
let $gndid := replace($gndid-orig, "[^A-Za-z0-9\-]", "+")
let $gndCollection := "/db/sade-projects/textgrid/data/xml/gnd/"
let $filename := $gndid || ".xml"
let $docname := $gndCollection || $filename
let $url := "https://d-nb.info/gnd/" || $gndid || "/about/lds.rdf"
let $persist := false()
let $request-headers := ()
let $response :=
    if( doc-available( $docname ))
    then doc( $docname )
    else
        httpclient:get(xs:anyURI($url), $persist, $request-headers)
let $store :=
    if(config:get("sade.develop") = "true")
    then
        if(doc-available($gndCollection || $filename))
        then $gndCollection || $filename
        else
            try {
                xmldb:store($gndCollection, $filename, $response)
            } catch * {
                ()
            }
    else ()
return
    string($response//foaf:page/@rdf:resource)
};

declare function ixp:wikidata-wikipedia($wikidata-id as xs:string)
as xs:string?{
  let $query := escape-uri("SELECT ?s WHERE{?s schema:about wd:" || $wikidata-id || ".}", true())
  let $url := "https://query.wikidata.org/sparql?query=" || $query
  let $persist := false()
  let $request-headers := ()
  let $uris := httpclient:get(xs:anyURI($url), $persist, $request-headers)//*:uri/string()
  return (
    $uris[matches(., "de\.wikipedia")],
    $uris[matches(., "en\.wikipedia")],
    $uris[matches(., "fr\.wikipedia")],
    $uris[matches(., "it\.wikipedia")],
    $uris[1])[1]
};

(:~
 : transformation from tei:note to xhtml:li
 :  :)
declare function ixp:note($note as element(tei:note)*)
as element(xhtml:li)* {
for $n in $note
    return
        element xhtml:li {
            attribute class { "tei-note" },
            $n/text(),
            for $ptr in $n/tei:ptr[@type = "Figurenlexikon"]
            return
                element xhtml:a {
                    attribute href { string($ptr/@target) },
                    string($n/@type)
                }
        }
};

(:~
 : creates a list of all creations or points to the creator of a work
 : :)
declare function ixp:creator($creators as element(tei:link)+)
as element(xhtml:li) {

if($creators[1]/parent::*/parent::tei:person)
then
    (: person item that is the creator :)
element xhtml:li {
    attribute class { "creator" },
    "",
    element xhtml:ul {
        attribute class {"workList"},
        for $creator in $creators
        let $target := $creator/@target => substring-before(" ")
        let $targetId := $target => substring-after(":")
        let $targetNode := $ixp:dataCollection/id($targetId)
        let $htmlResource :=
(: TODO remove condition_s_ for final production release :)
            if($targetNode)
            then
                if($targetNode[2])
                then "two entities with same ID: " || $targetId
                else ixp:get-list-by-entity( $targetNode )
            else "target-not-available"
        return
            element xhtml:li {
                attribute class {"item"},
                element xhtml:a {
                    attribute href { "register.html?e=" || string-join($targetId) },
                    if($targetNode[2])
                    then "two entities with same ID: " || $targetId
                    else string($targetNode/*[1])
                },
                text{ "&#8195;" },
                element xhtml:span {
                    attribute class { "load-entity" },
                    attribute data-load { $targetId },
                    element xhtml:i {
                        attribute class {"fa fa-plus-square-o"},
                        attribute aria-hidden {"true"}
                    }
                }
            }
    }
}
else
    (: work item with creator :)
element xhtml:li {
    attribute class { "creator" },
    "",
    element xhtml:ul {
        attribute class {"listPerson"},
        for $creator in $creators
        let $target := $creator/@target => substring-after(" ")
        let $targetId := $target => substring-after(":")
        let $targetNode := $ixp:dataCollection/id($targetId)
        let $htmlResource :=
(: TODO remove condition for final production release :)
            if($targetNode)
            then
                if($targetNode[2])
                then "two entities with same ID: " || $targetId
                else ixp:get-list-by-entity( $targetNode )
            else "target-not-available"
        return
            element xhtml:li {
                attribute class {"person"},
                element xhtml:a {
                    attribute href { "register.html?e=" || string-join($targetId) },
                    if($targetNode[2])
                    then "two entities with same ID: " || $targetId
                    else string($targetNode/*[1])
                }
            }
    }
}
};

declare function ixp:has-former-or-current-location($links as element(tei:link)*)
as element(xhtml:li)* {
for $link in $links
let $thisId := string($link/parent::tei:linkGrp/parent::tei:*/@xml:id)
let $id := ($link/@target => replace("\w{3}:|#", "") => tokenize(" "))[. != ""][. != $thisId]
return
    if(count($id) != 1) then
        (update insert comment {"unable to parse target: "  || serialize($link)} following $link,
        update delete $link)
        else
let $targetNode := $ixp:dataCollection/id($id)
return
    if(count($targetNode) gt 1)
    then (update insert comment {"xml:id used multiple times. this occurence is removed. please check and reinsert item when xml:id is unique. "  || serialize($id[2])} following $id[2],
        update delete $id[2]
        )
    else if(count($targetNode) = 0)
    then
        (update insert comment {"ID " || $id || " not found: Please create an appropriate item. "  || serialize($link)} following $link,
        update delete $link
        )
    else
let $list := ixp:get-list-by-entity($targetNode)
return
    element xhtml:li {
        attribute class { "former-or-current-location" },
        element xhtml:a {
        attribute href { "register.html?e=" || $id },
        <xhtml:i class="fa fa-map-marker" aria-hidden="true"></xhtml:i>,
        "&#160;",
        $targetNode/*[1]/string(),
        let $ancestors := $targetNode/ancestor::tei:place
        for $parentPlace at $pos in $ancestors
        let $name := $parentPlace/*[1]/string()
        return
          ((if($pos = 1) then "(" else ", ") ||
          $name ||
          (if($pos = count($ancestors)) then ")" else ()))
        }
    }
};

(:~
 : a list item with a list of links
 :)
declare function ixp:links($links as element(tei:link)*)
as element(xhtml:li) {
let $notebookUris :=

$links ! (substring-after(./@target, $ixp:targetStart) => substring(1,5) => distinct-values())
let $linkMap as map() :=
    map:new(
        for $nb in $notebookUris
        return
            map:entry($nb, $links[contains(@target, $nb)])
    )
return
    element xhtml:li {
        attribute class { "links" },
        if(count(map:keys($linkMap)) lt 2) then 'In Notizbuch' else 'In den Notizbüchern',
        element xhtml:ul {
            ixp:link($linkMap)
        }
    }
};

(:~
 : create list items containing links
 :   :)
declare function ixp:link($map as map()*)
as element(xhtml:li)* {
    for $tguri in map:keys($map)
    let $resolve := ixp:resolve-name($tguri)
    order by $resolve
    return
        element xhtml:li {
            replace($resolve, "([A-E])0(\d)", "$1$2") || ": ",
            element xhtml:ul {
                attribute class {"link-list-horizontal"},
                let $this-map := $map($tguri)
                let $surface-sequence := $this-map ! (./@target => substring-after("surface[@n='") => substring-before("']/"))
                for $link at $pos in $this-map
                let $page := $link/@target => substring-after("surface[@n='") => substring-before("']/")
                let $index-of := index-of($surface-sequence, $page)
                let $count := count( $index-of )
                where $pos = $index-of[1]
                return
                    element xhtml:li {
                        element xhtml:a {
                            attribute href {
                                "edition.html?id=%2Fxml%2Fdata%2F" || $tguri
                                || ".xml&amp;page=" || $page
                                || "&amp;target=" || string($link/parent::tei:*/parent::tei:*/@xml:id)
                            },
                            f-misc:n-translate($page),
                            if($count eq 1) then ()
                            else (" ", <xhtml:span title="Anzahl an Vorkommnissen auf dieser Seite">({$count})</xhtml:span>)
                        }
                    }
            }
        }
};

(:~ renewed version of the linking function
 : generates a XHTML list with all links without using the tei:link[@corresp]
 : from the entity. it queries the database for what is really mentioned.
 :)
declare function ixp:links-new($entity as element()) {
    let $id := string($entity/@xml:id)
    let $mentions := $ixp:dataCollection//tei:rs[contains(@ref, ":" || $id)][not(@prev)]
    let $base-uris := ($mentions ! base-uri()) => distinct-values()
return
    element xhtml:li {
        attribute class { "links" },
        if(count($base-uris) = 1) then 'In Notizbuch' else 'In den Notizbüchern',
        element xhtml:ul {
        (: main list :)
            for $uri in $base-uris
            let $pageList := $mentions[base-uri() = $uri] ! ./ancestor::tei:surface[last()]/string(@n)
            let $tguri := ($uri => tokenize("/"))[last()]
            let $resolve := ixp:resolve-name(substring-before($tguri, ".xml"))
            let $name := $resolve => replace("([A-E])0(\d)", "$1$2")
            order by $resolve
            return
                element xhtml:li {
                $name || ": ",
        element xhtml:ul {
            attribute class {"link-list-horizontal"},
            for $page in distinct-values($pageList)
            let $surface := doc($uri)//tei:surface[@n = $page]
            let $count := index-of($pageList, $page) => count()
            return
                element xhtml:li {
                    element xhtml:a {
                        attribute href {
                            "edition.html?id=%2Fxml%2Fdata%2F" || $tguri
                            || "&amp;page=" || $page
                            || "&amp;target=" || $id
                        },
                        f-misc:n-translate($page),
                        if($count eq 1) then ()
                        else (" ", <xhtml:span title="Anzahl an Vorkommnissen auf dieser Seite">({$count})</xhtml:span>)
                    }
                }
        }
        }
    }
}
};

(:~
 : prepares a link to the current entry
 : @param $id – the xml:id of the currently processed element
:)
declare function ixp:entry-link($id as attribute(xml:id))
as element(xhtml:span) {
    element xhtml:span {
        attribute class {"registerLink"},
        element xhtml:a {
            attribute href {
                "register.html?e=" || $id
                },
            <xhtml:i title="Link zu diesem Eintrag" class="fa fa-link"></xhtml:i>
        }
    }
};

(:~
 : creates a xhtml list item containing serialized code.
 : @param $node – a single element
 :   :)
declare function ixp:li-code($node as element(*))
as element(xhtml:li) {
element xhtml:li {
    attribute class {"register-code"},
    element xhtml:span {
        attribute class {"registerCode"},
            <xhtml:i title="Zeige XML" class="fa fa-code"></xhtml:i>
    },
    if(config:get("sade.develop") = "true")
    then
        code:main($node) => functx:change-element-ns-deep("", "")
    else
        code:main($node, false(), "hljs-", true())
            => functx:change-element-ns-deep("", "")
}
};

(:~
 : generic function for entries with tei:note/tei:ptr.
 : @return link to the corresponding index entry
 :   :)
declare function ixp:pointer($entry as element())
as element(xhtml:li) {
    let $labelMain := $entry/*[1]
    let $target := substring-after(($entry/tei:note/tei:ptr/@target), '#')
    let $targetNode := $ixp:dataCollection/id($target)
    return
        if(not($targetNode)) then <div>target not found</div> else
        element xhtml:li {
            attribute class {
                "registerEintrag",
                if( $entry >> $targetNode )
                then "up"
                else "down"
            },
            element xhtml:span {
                    attribute class { "label-main" },
                    $labelMain/text()
            },
            element xhtml:ul {
                element xhtml:li {
                attribute class { "pointer" },
                "siehe: ",
                    element xhtml:a {
                        attribute href { "?e=" || $target },
                        try {
                             string($targetNode/*[1])
                         } catch * {
                             (: TODO remove try catch when the data is better :)
                             "multiple entities found: " || string-join(($targetNode ! serialize(.)), " AND ")
                         }
                    }
                }
            }
        }
};

(:
 : parses a tei:bibl and mainly prepares a list item with a link to the entity
 :)
declare function ixp:bibl($bibls as element(tei:bibl)*)
as element(xhtml:li)* {
for $bibl in $bibls
    let $biblId := $bibl/tei:ptr/@target => substring-after(":")
    let $targetNode := $ixp:dataCollection/id($biblId)[. instance of element(tei:bibl)]
    return
        element xhtml:li {
            attribute class { "bibl" },
            element xhtml:a {
            attribute href { "literaturvz.html?id=" || $biblId },
            <xhtml:i class="fa fa-book" aria-hidden="true"></xhtml:i>,
            "&#160;",
            $targetNode/tei:choice/tei:abbr/string() ||
            (if($bibl/tei:citedRange)
            then ":&#160;" || $bibl/tei:citedRange
            else ())
            }
        }
};

declare function ixp:get-gnd-data($url as xs:string)
as element(rdf:RDF){
httpclient:get(xs:anyURI($url || "/about/rdf"), false(), ())//rdf:RDF
};

(: ################################################### :)
(: ################################################### :)
(: ################################################### :)

(:~
 : parser for listEvents/event entities
 : @param $eventDoc – the tei:listEvent containing all entries
 :  :)
declare function ixp:events($eventDoc as element(tei:listEvent))
as element(xhtml:div) {
<xhtml:div id="{ string-join(($eventDoc/local-name(), $eventDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $eventList in $eventDoc/tei:listEvent
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title">{$eventList/tei:head/text()}</h4>
            </xhtml:div>
            <xhtml:div class="panel-body">
                <ul class="listEvent">
{
if($ixp:getNotebook = $ixp:targetStart)
then
  for $event in $eventList/tei:event
  let $sort := string($event/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-event($event)
else
  for $event in $eventList/tei:event[tei:linkGrp/tei:link
  [starts-with(@target, $ixp:getNotebook)]]
  let $sort := string($event/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-event($event)
}
                </ul>
            </xhtml:div>
        </xhtml:div>
    }
    </xhtml:div>
</xhtml:div>
};

(:~
 : parser for listEvents/event entities
 : @param $eventDoc – the tei:listEvent containing all entries
 :  :)
declare function ixp:events($eventDoc as element(tei:listEvent), $filter as xs:string+)
as element(xhtml:div) {
<xhtml:div id="{ string-join(($eventDoc/local-name(), $eventDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $eventList in $eventDoc/tei:listEvent
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title">{$eventList/tei:head/text()}</h4>
            </xhtml:div>
            <xhtml:div class="panel-body">
                <ul class="listEvent">
{
  for $event in $eventList/tei:event[@xml:id = $filter]
  let $sort := string($event/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-event($event)
}
                </ul>
            </xhtml:div>
        </xhtml:div>
    }
    </xhtml:div>
</xhtml:div>
};

declare function ixp:prepare-event($event as element(tei:event))
as element(xhtml:li) {
(: check if the item points to another entity :)
if( not(exists($event/@xml:id)) )
then
    (: pointer :)
    ixp:pointer($event)
else
    let $id := $event/@xml:id
    let $wheres := tokenize($event/@where, " ") ! substring-after(., ":")
    let $labelMain := ($event/tei:label)[1]
    let $labelAlt := ($event/tei:label[not(@type="variant")])[position() gt 1]
    let $variant := $event/tei:label[@type="variant"]
    let $note := $event/tei:note
    let $bibl := $event/tei:bibl
    let $links := $event/tei:linkGrp/tei:link[@corresp="https://schema.org/mentions"]
return
    element xhtml:li {
        attribute id { string($id) },
        ixp:entry-class($id),
        (: link to this entry :)
        ixp:entry-link($id),
        element xhtml:span {
                attribute class { "label-main" },
                $labelMain/text()
            },
        element xhtml:ul {
            (: variant :)
            ixp:variant($variant),
            (: secondary label :)
            ixp:idno($labelAlt),
            (: note :)
            ixp:note($note),
            (: where :)
            for $where in $wheres return
            element xhtml:li {
                attribute class { "where" },
                element xhtml:a {
                attribute href { "register.html?e="|| $where },
                <xhtml:i class="fa fa-map-marker" aria-hidden="true"></xhtml:i>,
                "&#160;",
                $ixp:dataCollection/id($where)/*[1]/string()
                }
            },
            (: bibl :)
            ixp:bibl($bibl),
            (: links :)
            ixp:links-new($event),
            ixp:li-code($event)
        }
    }
};

(:~
 : parser for tei:listOrg, returns the index of orgnaisations.
 :  :)
declare function ixp:orgs($orgDoc as element(tei:listOrg)+) {
let $result :=
<xhtml:div id="{ string-join(($orgDoc/local-name(), $orgDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $orgList in $orgDoc
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title">{ $orgList/tei:head/text() }</h4>
            </xhtml:div>
            <xhtml:div class="panel-body">
                <ul class="listOrg">
{
if($ixp:getNotebook = $ixp:targetStart)
then
  for $org in $orgList/tei:org
  let $sort := string($org/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-org($org)
else
  for $org in $orgList/tei:org[tei:linkGrp/tei:link[starts-with(@target, $ixp:getNotebook)]]
  let $sort := string($org/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-org($org)
}
                </ul>
            </xhtml:div>
        </xhtml:div>
    }
    </xhtml:div>
</xhtml:div>
return
    $result
};

(:~
 : parser for tei:listOrg, returns the index of orgnaisations.
 :  :)
declare function ixp:orgs($orgDoc as element(tei:listOrg)+, $filter as xs:string+) {
<xhtml:div id="{ string-join(($orgDoc/local-name(), $orgDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $orgList in $orgDoc
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title">{ $orgList/tei:head/text() }</h4>
            </xhtml:div>
            <xhtml:div class="panel-body">
                <ul class="listOrg">
{
  for $org in $orgList/tei:org[@xml:id = $filter]
  let $sort := string($org/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-org($org)
}
                </ul>
            </xhtml:div>
        </xhtml:div>
    }
    </xhtml:div>
</xhtml:div>

};

(:~
 : transforms a single tei:org element to a xhtml:li
 : @since 1.0
 :  :)
declare function ixp:prepare-org($org as element(tei:org))
as element(xhtml:li) {
(: check if the item points to another entity :)
if( not(exists($org/@xml:id)) )
then
    (: pointer :)
    ixp:pointer($org)
else
    let $id := $org/@xml:id
    let $labelMain := ($org/tei:orgName)[1]
    let $idnos := $org/tei:idno
    let $variant := $org/tei:orgName[@type="variant"]
    let $note := $org/tei:note
    let $bibl := $org/tei:bibl
    let $links := $org/tei:linkGrp/tei:link[@corresp="https://schema.org/mentions"]
return
    element xhtml:li {
        attribute id { string($id) },
        ixp:entry-class($id),
        (: link to this entry :)
        ixp:entry-link($id),
        element xhtml:span {
                attribute class { "label-main" },
                $labelMain/text()
            },
        element xhtml:ul {
            (: variant :)
            ixp:variant($variant),
            (: secondary label :)
            ixp:idno($idnos),
            (: note :)
            ixp:note($note),
            (: bibl :)
            ixp:bibl($bibl),
            (: links :)
            ixp:links-new($org),
            ixp:li-code($org)
        }
    }
};

(:~
 : parser for tei:listPerson, returns the index of persons
 :   :)
declare function ixp:persons($persDoc as element(tei:listPerson))
as element(xhtml:div) {
(: main tab :)
<xhtml:div id="{ string-join(($persDoc/local-name(), $persDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $persList in $persDoc
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title"><a href="#collapse1-1" data-parent="#accordion" data-toggle="collapse">Personen und Werke</a>
                </h4>
            </xhtml:div>
            <xhtml:div class="panel-body">
                <ul class="listPerson">
{
if($ixp:getNotebook = $ixp:targetStart)
then
  for $pers in $persList/tei:*
  let $sort := string($pers/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-person($pers)
else
  for $pers in $persList/tei:*[tei:linkGrp/tei:link[starts-with(@target, $ixp:getNotebook)]]
  let $sort := string($pers/*[1])
                => replace("ä", "ae")
                => replace("ö", "oe")
                => replace("ü", "ue")
  order by $sort
  return ixp:prepare-person($pers)
}
                </ul>
            </xhtml:div>
        </xhtml:div>
    }
    </xhtml:div>
</xhtml:div>
};


(:~
 : parser for tei:listPerson, returns the index of persons
 :   :)
declare function ixp:persons($persDoc as element(tei:listPerson), $filter as xs:string+)
as element(xhtml:div) {
(: main tab :)
<xhtml:div id="{ string-join(($persDoc/local-name(), $persDoc/@type), "-") }" class="tab-pane">
    <xhtml:div class="panel-group" aria-multiselectable="true" role="tablist">
    {for $persList in $persDoc
    return
        <xhtml:div class="panel panel-default">
            <xhtml:div class="panel-heading">
                <h4 class="panel-title"><a href="#collapse1-1" data-parent="#accordion" data-toggle="collapse">Personen und Werke</a>