记录一次内存分页

    @Override
    @Transactional(rollbackFor = Exception.class)
    public SimplePageInfo test(Integer pageNum, Integer pageSize, Long userId) {
      
        List<MarkTextPO> markTextPOList = markTextPOMapper.selectUnFinishedByUserId(userId);
        if (markTextPOList.size() == 100) {
        } else {
            Integer count = 100 - markTextPOList.size();
            List<MarkTextPO> extraList = markTextPOMapper.selectUnFinished(count);
            extraList.forEach(item -> {
                Long flag = markTextPOMapper.updateByOwnerUserId(item.getMarkTextId(), userId);
                if (flag == 1) {
                    markTextPOList.add(item);
                }
            });
        }
        SimplePageInfo page = SimplePageInfo.of(markTextPOList.stream().skip((pageNum - 1) * pageSize).limit(pageSize).collect(Collectors.toList()));
        page.setNumber(pageNum);
        page.setPages(5);
        page.setPageSize(pageSize);
        page.setTotalElements(100);
        return page;
    }