/** The extra queries. */
    public String[] ex_q;

    /** The similar document hash. */
    public String sdh;

    @Override
    public String getQuery() {
        return q;
    }

    @Override
    public String[] getExtraQueries() {
        return stream(ex_q).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    /**
     * Array of language codes to filter search results.
     */
    public String[] lang;

    /**
     * Array of additional query strings to exclude from search.
     */
    public String[] ex_q;

    /**
     * The starting position for search results pagination.
     */
    @ValidateTypeFailure
    public Integer start;

    /**
     * The offset for search results.
     */

        final List<String> pagingQueryList = new ArrayList<>();
        if (form.ex_q != null) {
            stream(form.ex_q).of(stream -> stream.filter(StringUtil::isNotBlank)
                    .distinct()
                    .forEach(q -> pagingQueryList.add("ex_q=" + LaFunctions.u(q))));
        }
        if (StringUtil.isNotBlank(form.sort)) {

            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.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=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=Consulta
labels.roles=Roles
labels.suggestSearchLog=Registro de búsqueda para sugerencias
labels.suggestWord=Palabra sugerida
labels.targetLabel=Etiqueta
labels.term=Término de búsqueda
labels.fields=Campos
labels.ex_q=Consulta extendida
labels.oldPassword=Contraseña actual
labels.newPassword=Nueva contraseña
labels.confirmNewPassword=Confirmar nueva contraseña
labels.menu_system=Sistema
labels.menu_wizard=Asistente