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  • 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;
    
        }
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  • 原文地址:https://www.cnblogs.com/aspirant/p/14911985.html
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