2025-07-17 15:26:39 +08:00
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package com.gunshi.project.hsz.service;
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2024-07-08 17:47:02 +08:00
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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2025-07-17 15:26:39 +08:00
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import com.gunshi.project.hsz.entity.vo.RsvrComplexVo;
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import com.gunshi.project.hsz.mapper.StZqrlBMapper;
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import com.gunshi.project.hsz.model.StRsvrR;
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import com.gunshi.project.hsz.model.StZqrlB;
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2024-07-08 17:47:02 +08:00
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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2025-04-08 17:59:39 +08:00
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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2025-09-16 14:25:13 +08:00
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import java.time.Duration;
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2025-04-08 17:59:39 +08:00
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import java.util.*;
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import java.util.stream.Collectors;
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2024-07-08 17:47:02 +08:00
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/**
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* 描述: 水位流量关系曲线表
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* author: xusan
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* date: 2024-07-08 17:30:38
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*/
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@Service
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@Slf4j
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@Transactional(rollbackFor = Exception.class)
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2025-04-08 17:59:39 +08:00
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public class StZqrlBService extends ServiceImpl<StZqrlBMapper, StZqrlB> {
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/**
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* 计算溢洪量
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2025-04-09 14:01:44 +08:00
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*
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2025-04-08 17:59:39 +08:00
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* @param rz 计算溢洪的起始水位
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* @param seconds 溢洪时间,是两条水位数据的时间差,单位秒
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* @param zqrlList 水位流量关系曲线
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* @return 溢洪量
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* @author lyf
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*/
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public BigDecimal calculateSpilledVolume(BigDecimal rz, long seconds, List<StZqrlB> zqrlList) {
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return getQFromZqrl(rz, zqrlList).multiply(BigDecimal.valueOf(seconds));
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}
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/**
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* 计算溢洪量
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2025-04-09 14:01:44 +08:00
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*
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* @param rz 计算溢洪的起始水位
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* @param seconds 溢洪时间,是两条水位数据的时间差,单位秒
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2025-04-08 17:59:39 +08:00
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* @return 溢洪量
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* @author lyf
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*/
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public BigDecimal calculateSpilledVolume(BigDecimal rz, long seconds) {
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return calculateSpilledVolume(rz, seconds, list());
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}
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/**
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* 批量计算溢洪量
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2025-04-09 14:01:44 +08:00
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*
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2025-04-08 17:59:39 +08:00
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* @param rsvrList 要计算的水位数据
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* @param zqrlList 水位流量关系曲线
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* @return 计算后的水位数据(时间倒序),含每条水位对应的流量和与上一条水位对应的溢洪量
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2025-04-09 14:01:44 +08:00
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* @author lyf
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2025-04-08 17:59:39 +08:00
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*/
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public List<RsvrComplexVo> calculateSpilledVolumeList(List<StRsvrR> rsvrList, List<StZqrlB> zqrlList) {
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rsvrList.sort(Comparator.comparing(StRsvrR::getTm).reversed());
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List<RsvrComplexVo> ret = new ArrayList<>();
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for (int i = 0; i < rsvrList.size(); i++) {
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StRsvrR rsvr = rsvrList.get(i);
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BigDecimal rz = new BigDecimal(rsvr.getRz());
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Date tm = rsvr.getTm();
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RsvrComplexVo vo = RsvrComplexVo.of(rz, tm);
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2025-09-16 14:25:13 +08:00
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BigDecimal q = getQFromZqrl(rz, zqrlList);
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//TODO 这个需要公式进行对水位->流量的转换
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2025-04-08 17:59:39 +08:00
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if (i == 0) {
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vo.setQ(getQFromZqrl(rz, zqrlList));
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vo.setSv(BigDecimal.ZERO);
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} else {
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StRsvrR rsvrPrev = rsvrList.get(i - 1);
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Date tmPrev = rsvrPrev.getTm();
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long seconds = tm.getTime() - tmPrev.getTime();
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vo.setQ(getQFromZqrl(rz, zqrlList));
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2025-09-16 14:25:13 +08:00
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//TODO 这里有个函数调用,记得到时候也替换一下计算公式
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2025-04-08 17:59:39 +08:00
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vo.setSv(calculateSpilledVolume(rz, seconds));
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}
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ret.add(vo);
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}
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return ret;
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}
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/**
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* 批量计算溢洪量
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2025-04-09 14:01:44 +08:00
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*
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2025-04-08 17:59:39 +08:00
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* @param rsvrList 要计算的水位数据
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* @return 计算后的水位数据(时间倒序),含每条水位对应的流量和与上一条水位对应的溢洪量
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2025-04-09 14:01:44 +08:00
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* @author lyf
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2025-04-08 17:59:39 +08:00
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*/
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public List<RsvrComplexVo> calculateSpilledVolumeList(List<StRsvrR> rsvrList) {
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return calculateSpilledVolumeList(rsvrList, list());
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}
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2025-04-09 14:01:44 +08:00
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/**
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* 根据水位查表得流量
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*
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* @param rz 水位
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* @return 查表流量
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* @author lyf
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*/
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2025-04-08 17:59:39 +08:00
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public BigDecimal getQFromZqrl(BigDecimal rz) {
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return getQFromZqrl(rz, list());
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}
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2025-04-09 14:01:44 +08:00
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/**
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* 根据水位查表得流量
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*
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* @param rz 水位
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* @param zqrlList 水位流量关系曲线
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* @return 查表流量
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* @author lyf
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*/
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2025-04-08 17:59:39 +08:00
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public BigDecimal getQFromZqrl(BigDecimal rz, List<StZqrlB> zqrlList) {
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return toMap(zqrlList).getOrDefault(rz.setScale(3, RoundingMode.DOWN), BigDecimal.ZERO);
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}
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2025-04-09 14:01:44 +08:00
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/**
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* 将水位流量曲线列表转为字典,水位作为键,注意BigDecimal做键的时候要匹配值和精度
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*
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* @param zqrlList 水位流量曲线列表
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* @return 水位流量曲线字典
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* @author lyf
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*/
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2025-04-08 17:59:39 +08:00
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private Map<BigDecimal, BigDecimal> toMap(List<StZqrlB> zqrlList) {
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return zqrlList.stream()
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.map(item -> Map.entry(item.getZ().setScale(3, RoundingMode.DOWN), item.getQ()))
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.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
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}
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2024-07-08 17:47:02 +08:00
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2025-09-16 14:25:13 +08:00
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public BigDecimal getQByZqrl(List<StZqrlB> zqrlBList, BigDecimal rz) {
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int l =0;
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int r = zqrlBList.size() - 1;
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if(rz.compareTo(zqrlBList.get(0).getZ()) < 0){
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return BigDecimal.ZERO;
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}
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//使用二分法,来获取 避免On的查询时间复杂度
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while(l < r){
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int mid = l + (r - l) / 2;
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if(zqrlBList.get(mid).getZ().compareTo(rz) ==0){
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return zqrlBList.get(mid).getQ();
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}else if(zqrlBList.get(mid).getZ().compareTo(rz) >0){
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r = mid - 1;
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}else{
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l = mid + 1;
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}
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}
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// 现在 l 是最接近的索引,但需要比较前后三个值
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int closestIndex = l;
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// 处理边界情况
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if (l == 0) {
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// 只有第一个元素,或者比较第一个和第二个哪个更接近
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if (zqrlBList.size() > 1) {
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BigDecimal diff1 = rz.subtract(zqrlBList.get(0).getZ()).abs();
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BigDecimal diff2 = rz.subtract(zqrlBList.get(1).getZ()).abs();
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closestIndex = diff1.compareTo(diff2) <= 0 ? 0 : 1;
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}
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//TODO 这里找到最接近的值后,仍然要通过公式,计算出真正的流量
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return zqrlBList.get(closestIndex).getQ();
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}
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if (l == zqrlBList.size() - 1) {
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// 只有最后一个元素,或者比较最后两个哪个更接近
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if (zqrlBList.size() > 1) {
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BigDecimal diff1 = rz.subtract(zqrlBList.get(l - 1).getZ()).abs();
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BigDecimal diff2 = rz.subtract(zqrlBList.get(l).getZ()).abs();
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closestIndex = diff1.compareTo(diff2) <= 0 ? l - 1 : l;
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}
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//TODO 这里找到最接近的值后,仍然要通过公式,计算出真正的流量
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return zqrlBList.get(closestIndex).getQ();
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}
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// 正常情况:比较前一个、当前、后一个三个值,找到最接近的
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BigDecimal preVal = zqrlBList.get(l - 1).getZ();
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BigDecimal curVal = zqrlBList.get(l).getZ();
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BigDecimal nextVal = zqrlBList.get(l + 1).getZ();
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//计算他们与目标的插值
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BigDecimal diffPre = rz.subtract(preVal).abs();
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BigDecimal diffCur = rz.subtract(curVal).abs();
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BigDecimal diffNext = rz.subtract(nextVal).abs();
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// 找到最小的差值
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if (diffPre.compareTo(diffCur) <= 0 && diffPre.compareTo(diffNext) <= 0) {
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closestIndex = l - 1;
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} else if (diffCur.compareTo(diffPre) <= 0 && diffCur.compareTo(diffNext) <= 0) {
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closestIndex = l;
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} else {
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closestIndex = l + 1;
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}
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//TODO 这里找到最接近的值后,仍然要通过公式,计算出真正的流量
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return zqrlBList.get(closestIndex).getQ();
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}
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/**
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* 计算累计溢洪量
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* @param complexList
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* @return
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*/
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public BigDecimal getFlowQSum(List<RsvrComplexVo> complexList) {
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BigDecimal sum = BigDecimal.ZERO;
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for (int i = 0; i < complexList.size(); i++) {
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RsvrComplexVo current = complexList.get(i);
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if (i == 0) {
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// 第一条数据,累计量为0
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sum = BigDecimal.ZERO;
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} else {
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RsvrComplexVo previous = complexList.get(i - 1);
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// 计算时间间隔(秒)
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long timeDiffSeconds = Duration.between(previous.getTm().toInstant(),
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current.getTm().toInstant()).getSeconds();
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if (timeDiffSeconds > 0) {
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// 使用梯形法则计算这段时间内的溢洪量:(上一个流量 + 当前流量) / 2 * 时间间隔
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BigDecimal avgFlow = previous.getSv().add(current.getSv())
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.divide(BigDecimal.valueOf(2), 10, RoundingMode.HALF_UP);
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BigDecimal increment = avgFlow.multiply(BigDecimal.valueOf(timeDiffSeconds));
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sum = sum.add(increment);
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}
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}
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}
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return sum;
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}
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}
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