public class RoleService {

    @Resource
    protected RoleBhv roleBhv;

    @Resource
    protected FessConfig fessConfig;

    @Resource
    protected UserBhv userBhv;

    public List<Role> getRoleList(final RolePager rolePager) {

        final PagingResultBean<Role> roleList = roleBhv.selectPage(cb -> {
            cb.paging(rolePager.getPageSize(), rolePager.getCurrentPageNumber());

            searchPaging(data, form);
        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "roleItems", roleService.getRoleList(rolePager)); // page navi

        // restore from pager
        copyBeanToBean(rolePager, form, op -> op.include("id"));
    }

    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});
        final RolePager pager = copyBeanToNewBean(body, RolePager.class);
        final List<Role> list = roleService.getRoleList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))