* @return an array of validated extra query strings
     */
    protected String[] parseExtraQueries(final HttpServletRequest request) {
        final String[] extraQueries = request.getParameterValues("ex_q");
        if (extraQueries == null || extraQueries.length == 0) {
            return new String[0];
        }
        // Build allowlist from configured facet queries

            if (pagingQueryList != null) {
                final String prefix;
                if (query != null) {
                    prefix = "ex_q=" + query.split(":")[0] + "%3A";
                } else {
                    prefix = null;
                }
                return pagingQueryList.stream()

        public String getQuery() {
            return request.getParameter("q");
        }

        @Override
        public String[] getExtraQueries() {
            return getParamValueArray(request, "ex_q");
        }

        @Override
        public Map<String, String[]> getFields() {
            final Map<String, String[]> fields = new HashMap<>();

labels.q=Query
labels.roles=Roles
labels.suggestSearchLog=Suggest Search Log
labels.suggestWord=Suggest Word
labels.targetLabel=Label
labels.term=Term
labels.fields=Fields
labels.ex_q=Extended Query
labels.oldPassword=Current Password
labels.newPassword=New Password
labels.confirmNewPassword=New Password (Confirm)

labels.menu_system=System
labels.menu_wizard=Wizard

labels.q=Query
labels.roles=Rollen
labels.suggestSearchLog=Suggestie zoeklogboek
labels.suggestWord=Voorgesteld woord
labels.targetLabel=Label
labels.term=Zoekterm
labels.fields=Velden
labels.ex_q=Uitgebreide query
labels.oldPassword=Huidig wachtwoord
labels.newPassword=Nieuw wachtwoord
labels.confirmNewPassword=Nieuw wachtwoord bevestigen

labels.menu_system=Systeem
labels.menu_wizard=Wizard

labels.order=順序
labels.purgeSuggestSearchLogDay=刪除以前的建議資訊
labels.q=查詢
labels.roles=角色
labels.suggestSearchLog=建議搜尋日誌
labels.suggestWord=建議詞
labels.targetLabel=標籤
labels.term=搜尋詞
labels.fields=欄位
labels.ex_q=擴展查詢
labels.oldPassword=目前密碼
labels.newPassword=新密碼
labels.confirmNewPassword=確認新密碼

labels.menu_system=系統
labels.menu_wizard=嚮導
labels.menu_crawl_config=通用
labels.menu_scheduler_config=排程器

labels.q=Abfrage
labels.roles=Rollen
labels.suggestSearchLog=Suchprotokoll vorschlagen
labels.suggestWord=Wort vorschlagen
labels.targetLabel=Label
labels.term=Begriff
labels.fields=Felder
labels.ex_q=Erweiterte Abfrage
labels.oldPassword=Aktuelles Passwort
labels.newPassword=Neues Passwort
labels.confirmNewPassword=Neues Passwort (bestätigen)

labels.menu_system=System
labels.menu_wizard=Assistent

labels.q=Kueri
labels.roles=Peran
labels.suggestSearchLog=Log Pencarian Saran
labels.suggestWord=Kata Saran
labels.targetLabel=Label
labels.term=Istilah
labels.fields=Field
labels.ex_q=Kueri Diperluas
labels.oldPassword=Kata Sandi Saat Ini
labels.newPassword=Kata Sandi Baru
labels.confirmNewPassword=Kata Sandi Baru (Konfirmasi)

labels.menu_system=Sistem
labels.menu_wizard=Panduan

labels.q=Zapytanie
labels.roles=Role
labels.suggestSearchLog=Dziennik wyszukiwania sugestii
labels.suggestWord=Sugerowane słowo
labels.targetLabel=Etykieta
labels.term=Termin wyszukiwania
labels.fields=Pola
labels.ex_q=Rozszerzone zapytanie
labels.oldPassword=Bieżące hasło
labels.newPassword=Nowe hasło
labels.confirmNewPassword=Potwierdź nowe hasło

labels.menu_system=System
labels.menu_wizard=Kreator

labels.q=Sorgu
labels.roles=Roller
labels.suggestSearchLog=Öneri Arama Günlüğü
labels.suggestWord=Öneri Kelime
labels.targetLabel=Etiket
labels.term=Terim
labels.fields=Alanlar
labels.ex_q=Genişletilmiş Sorgu
labels.oldPassword=Mevcut Şifre
labels.newPassword=Yeni Şifre
labels.confirmNewPassword=Yeni Şifre (Onayla)

labels.menu_system=Sistem
labels.menu_wizard=Sihirbaz