stream filter

1\多个filter的方法：

 /**
     * 过滤掉查询条件
     * */
    private List<PerformDTO> filterPerformDTOList(List<PerformDTO> performDTOList,EventQueryParamDTO queryParamDTO) {
        mzLog.info("查询条件过滤前 performDTOList size:{}", performDTOList.size());
        Predicate<PerformDTO> eventNoFilter = performDTO -> StringUtils.isBlank(queryParamDTO.getEventNo())
            || StringUtils.equals(performDTO.getPerformCode(), queryParamDTO.getEventNo());

        // 段段修改；场次名称关键字搜索 2020/12/16
        Predicate<PerformDTO> eventNameFilter = performDTO -> StringUtils.isBlank(queryParamDTO.getEventName())
                || performDTO.getPerformName().contains(queryParamDTO.getEventName());

        Predicate<PerformDTO> startTimeFilter = performDTO -> queryParamDTO.getShowStartTime() == null
            || performDTO.getStartTime().after(queryParamDTO.getShowStartTime());
        // 段段修改；结束时间搜索
        Predicate<PerformDTO> endTimeFilter = performDTO -> queryParamDTO.getShowEndTime() == null
            || performDTO.getEndTime().before(queryParamDTO.getShowEndTime());

        Predicate<PerformDTO> eventIdFilter = performDTO -> CollectionUtils.isEmpty(queryParamDTO.getEventIdList())
            || queryParamDTO.getEventIdList().contains(performDTO.getId());

        Predicate<PerformDTO> stateFilter = performDTO -> {
            return stateFilter(queryParamDTO, performDTO);
        };

        Predicate<PerformDTO> alreadySoldFilter = performDTO -> {
            return alreadySoldfilter(queryParamDTO, performDTO);
        };

        // 过滤
        performDTOList = performDTOList.stream()
            .filter(it -> !it.getCoping())
            .filter(eventNoFilter)
            .filter(eventNameFilter)
            .filter(startTimeFilter)
            .filter(endTimeFilter)
            .filter(eventIdFilter)
            .filter(stateFilter)
            .filter(alreadySoldFilter)
            .collect(Collectors.toList());
        mzLog.info("查询条件过滤后 performDTOList size:{}", performDTOList.size());
        return performDTOList;

    }