个税解析
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package com.engine.salary.entity.salaryacct.bo;
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import com.engine.salary.entity.salaryformula.ExpressFormula;
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import com.engine.salary.entity.salarysob.po.SalarySobItemPO;
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import com.engine.salary.util.SalaryEntityUtil;
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import com.google.common.collect.Lists;
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import com.googlecode.aviator.Expression;
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import com.weaver.excel.formula.api.entity.FormulaVar;
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import com.weaver.hrm.salary.constant.SalaryConstant;
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import com.weaver.hrm.salary.enums.salaryitem.SalaryFormulaReferenceEnum;
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import com.weaver.teams.domain.user.SimpleEmployee;
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import lombok.Data;
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import org.apache.commons.lang3.StringUtils;
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import java.util.*;
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import java.util.concurrent.LinkedTransferQueue;
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/**
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* @description: 对薪资核算时涉及的薪资项目进行排序
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* @author: xiajun
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* @modified By: xiajun
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* @date: Created in 2023/5/19 16:01
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* @version:v1.0
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*/
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public class SalaryCalcItemGraph {
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private List<SalaryCalcItemGraphNode> nodes;
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/**
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* 根据薪资账套的薪资项目、公式详情构建实例
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*
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* @param salarySobItems 薪资账套的薪资项目
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* @param expressFormulas 公式详情
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*/
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public SalaryCalcItemGraph(List<SalarySobItemPO> salarySobItems, List<ExpressFormula> expressFormulas, SimpleEmployee currentUser) {
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Map<String, SalarySobItemPO> salaryItemMap = SalaryEntityUtil.convert2Map(salarySobItems,
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SalarySobItemPO::getSalaryItemCode);
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Map<Long, ExpressFormula> expressFormulaMap = SalaryEntityUtil.convert2Map(expressFormulas,
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ExpressFormula::getId);
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Map<Long, List<FormulaVar>> formulaVarMap = ExpressFormulaBO.buildFormulaVar(expressFormulas);
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Map<Long, Expression> expressionMap = ExpressFormulaBO.compile(expressFormulas, currentUser);
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Map<Long, SalaryCalcItemGraphNode> nodeMap = new HashMap<>();
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for (SalarySobItemPO salarySobItem : salarySobItems) {
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Expression expression = expressionMap.get(salarySobItem.getFormulaId());
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ExpressFormula expressFormula = expressFormulaMap.get(salarySobItem.getFormulaId());
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SalaryCalcItemGraphNode node = nodeMap.computeIfAbsent(salarySobItem.getSalaryItemId(), key -> new SalaryCalcItemGraphNode(salarySobItem, expressFormula, expression));
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List<FormulaVar> formulaVars = expressFormula == null ? Collections.emptyList()
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: formulaVarMap.getOrDefault(expressFormula.getId(), Collections.emptyList());
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for (FormulaVar formulaVar : formulaVars) {
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if (StringUtils.equalsIgnoreCase(formulaVar.getModule(), SalaryConstant.MODULE)
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&& StringUtils.isNotEmpty(formulaVar.getFieldId())
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&& StringUtils.startsWith(formulaVar.getFieldId(), SalaryFormulaReferenceEnum.CURRENT_CALC.getValue() + SalaryConstant.FORMULA_VAR_SEPARATOR)) {
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String salaryItemCode = formulaVar.getFieldId().split(SalaryConstant.FORMULA_VAR_SEPARATOR)[1];
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SalarySobItemPO subSalarySobItem = salaryItemMap.get(salaryItemCode);
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if (subSalarySobItem == null) {
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continue;
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}
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ExpressFormula subExpressFormula = expressFormulaMap.get(subSalarySobItem.getFormulaId());
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Expression subExpression = expressionMap.get(subSalarySobItem.getFormulaId());
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SalaryCalcItemGraphNode destNode = nodeMap.computeIfAbsent(subSalarySobItem.getSalaryItemId(), key -> new SalaryCalcItemGraphNode(subSalarySobItem, subExpressFormula, subExpression));
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node.getDestNodes().add(destNode);
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}
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}
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}
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this.nodes = Lists.newArrayList(nodeMap.values());
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}
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/**
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* 对薪资核算时涉及的薪资项目进行排序
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* 对于一次薪资核算而言，不同的薪资项目之间可能会存在引用。
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* 例如「绩效工资=绩效比例*(基本工资+岗位工资)」，在计算「绩效工资」前需要先计算出「绩效比例」、「基本工资」、「岗位工资」
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* 所以薪资核算前需要对所涉及的所有薪资项目进行一个计算排序
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* 对薪资项目的排序就相当于是对一个「有向无环的图」进行拓扑排序，一个薪资项目就相当于图中的一个「顶点」
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* 具体算法如下：
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* 1、根据「薪资账套的薪资项目」、「公式详情」构建出所有的「顶点」
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* 2、将所有顶点的入度都初始化为0
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* 3、遍历所有的顶点，计算每个顶点的入度
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* 4、创建一个队列，将所有入度为0的顶点都存入队列
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* 5、每次从队列中取出一个点，将该点存入结果集合中，并将该顶点的所有邻接点的入度减1。如果邻接点的入度变为了0，将其加入队列中
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* 6、重复步骤5，直到队列空了
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*
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* @return 排好序的薪资项目id
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*/
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public List<SalaryCalcItem> sort() {
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// 循环遍历所有顶点
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for (SalaryCalcItemGraphNode node : nodes) {
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// 循环遍历每个顶点的邻居
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for (SalaryCalcItemGraphNode destNode : node.getDestNodes()) {
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// 维护每个顶点的入度
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destNode.setInDegree(destNode.getInDegree() + 1);
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}
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}
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// 创建一个队列
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LinkedTransferQueue<SalaryCalcItemGraphNode> queue = new LinkedTransferQueue<>();
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// 再次循环所有顶点
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for (SalaryCalcItemGraphNode node : nodes) {
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// 若该顶点入度为0，则加入队列
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if (node.getInDegree() == 0) {
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queue.offer(node);
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}
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}
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// 存储结果的列表
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List<SalaryCalcItem> result = new ArrayList<>();
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// 循环直到队列为空
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while (!queue.isEmpty()) {
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// 取出队列头部的顶点编号
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SalaryCalcItemGraphNode node = queue.poll();
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// 将该顶点加入到结果列表中
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result.add(node.getSalaryCalcItem());
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// 标记该顶点已被访问
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node.setVisited(true);
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// 遍历该顶点的邻居
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for (SalaryCalcItemGraphNode destNode : node.getDestNodes()) {
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// 若该邻居未被访问过
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if (!destNode.isVisited()) {
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// 将该邻居的入度减一
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destNode.setInDegree(destNode.getInDegree() - 1);
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// 若该邻居入度已经变为0
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if (destNode.getInDegree() == 0) {
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// 将该邻居加入到队列中
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queue.offer(destNode);
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}
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}
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}
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}
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// 倒序
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Collections.reverse(result);
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// 返回结果列表
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return result;
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}
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@Data
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private static class SalaryCalcItemGraphNode {
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/**
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* 薪资项目的id
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*/
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private SalaryCalcItem salaryCalcItem;
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/**
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* 入度
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*/
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private int inDegree;
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/**
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* 是否已被访问
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*/
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private boolean visited;
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/**
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* 当前顶点的邻居
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*/
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private List<SalaryCalcItemGraphNode> destNodes;
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public SalaryCalcItemGraphNode(SalarySobItemPO salarySobItem, ExpressFormula expressFormula, Expression expression) {
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this.salaryCalcItem = new SalaryCalcItem()
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.setSalaryItemId(salarySobItem.getSalaryItemId())
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.setSalaryItemCode(salarySobItem.getSalaryItemCode())
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.setIncomeCategory(salarySobItem.getIncomeCategory())
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.setUseInEmployeeSalary(salarySobItem.getUseInEmployeeSalary())
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.setDataType(salarySobItem.getDataType())
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.setRoundingMode(salarySobItem.getRoundingMode())
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.setPattern(salarySobItem.getPattern())
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.setExpressFormula(expressFormula)
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.setExpression(expression);
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this.inDegree = 0;
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this.visited = false;
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this.destNodes = new ArrayList<>();
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}
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}
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}
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