if (session != null && form.num != null) {
                    session.setAttribute(Constants.RESULTS_PER_PAGE, form.num);
                }
            });
        }
        return doSearch(form);
    }

    @Execute
    public HtmlResponse prev(final SearchForm form) {
        return doMove(form, -1);
    }

    @Execute
    public HtmlResponse next(final SearchForm form) {

        saveToken();
        validate(form, messages -> {}, () -> asHtml(path_AdminError_AdminErrorJsp));
        return asListHtml();
    }

    protected HtmlResponse doSearch(final ListForm form) {
        validate(form, messages -> {}, this::asListHtml);

        if (StringUtil.isBlank(form.q)) {
            // query matches on all documents.