}
        return SortBuilders.fieldSort(field).order(order);
    }

    protected boolean isSearchField(final String field) {
        for (final String searchField : getQueryFieldConfig().searchFields) {
            if (searchField.equals(field)) {
                return true;
            }
        }
        return false;
    }

    protected OptionalThing<String[]> getQueryLanguages() {

            cb.specify().columnHitCount();
            cb.specify().columnVirtualHost();
            cb.specify().columnLanguages();
            cb.specify().columnRoles();
            cb.specify().doColumn("searchField.*");
        }, this::indexFromSearchLog);
    }

    public void indexFromSearchLog(final List<SearchLog> searchLogList) {
        final Map<String, LocalDateTime> duplicateSessionMap = new HashMap<>();

        if (highlightedFields == null) {
            highlightedFields = fessConfig.getQueryAdditionalHighlightedFields( //
                    fessConfig.getIndexFieldContent());
        }
        if (searchFields == null) {
            searchFields = fessConfig.getQueryAdditionalSearchFields(//
                    INURL_FIELD, //
                    fessConfig.getIndexFieldUrl(), //
                    fessConfig.getIndexFieldDocId(), //