package com.dl.flowable.flow;
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import cn.hutool.core.util.ObjectUtil;
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import com.dl.common.exception.ServiceException;
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import lombok.extern.slf4j.Slf4j;
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import org.flowable.bpmn.model.*;
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import org.flowable.engine.impl.bpmn.behavior.ParallelMultiInstanceBehavior;
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import org.flowable.engine.impl.bpmn.behavior.SequentialMultiInstanceBehavior;
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import org.flowable.task.api.history.HistoricTaskInstance;
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import java.util.*;
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/**
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* @author XuanXuan
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* @date 2021-04-03 23:57
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*/
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@Slf4j
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public class FlowableUtils {
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/**
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* 根据节点,获取入口连线
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* @param source
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* @return
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*/
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public static List<SequenceFlow> getElementIncomingFlows(FlowElement source) {
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List<SequenceFlow> sequenceFlows = null;
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if (source instanceof FlowNode) {
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sequenceFlows = ((FlowNode) source).getIncomingFlows();
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} else if (source instanceof Gateway) {
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sequenceFlows = ((Gateway) source).getIncomingFlows();
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} else if (source instanceof SubProcess) {
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sequenceFlows = ((SubProcess) source).getIncomingFlows();
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} else if (source instanceof StartEvent) {
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sequenceFlows = ((StartEvent) source).getIncomingFlows();
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} else if (source instanceof EndEvent) {
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sequenceFlows = ((EndEvent) source).getIncomingFlows();
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}
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return sequenceFlows;
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}
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/**
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* 根据节点,获取出口连线
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* @param source
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* @return
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*/
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public static List<SequenceFlow> getElementOutgoingFlows(FlowElement source) {
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List<SequenceFlow> sequenceFlows = null;
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if (source instanceof FlowNode) {
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sequenceFlows = ((FlowNode) source).getOutgoingFlows();
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} else if (source instanceof Gateway) {
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sequenceFlows = ((Gateway) source).getOutgoingFlows();
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} else if (source instanceof SubProcess) {
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sequenceFlows = ((SubProcess) source).getOutgoingFlows();
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} else if (source instanceof StartEvent) {
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sequenceFlows = ((StartEvent) source).getOutgoingFlows();
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} else if (source instanceof EndEvent) {
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sequenceFlows = ((EndEvent) source).getOutgoingFlows();
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}
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return sequenceFlows;
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}
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/**
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* 获取全部节点列表,包含子流程节点
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* @param flowElements
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* @param allElements
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* @return
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*/
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public static Collection<FlowElement> getAllElements(Collection<FlowElement> flowElements, Collection<FlowElement> allElements) {
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allElements = allElements == null ? new ArrayList<>() : allElements;
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for (FlowElement flowElement : flowElements) {
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allElements.add(flowElement);
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if (flowElement instanceof SubProcess) {
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// 继续深入子流程,进一步获取子流程
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allElements = FlowableUtils.getAllElements(((SubProcess) flowElement).getFlowElements(), allElements);
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}
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}
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return allElements;
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}
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/**
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* 迭代获取父级任务节点列表,向前找
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* @param source 起始节点
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param userTaskList 已找到的用户任务节点
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* @return
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*/
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public static List<UserTask> iteratorFindParentUserTasks(FlowElement source, Set<String> hasSequenceFlow, List<UserTask> userTaskList) {
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userTaskList = userTaskList == null ? new ArrayList<>() : userTaskList;
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (source instanceof StartEvent && source.getSubProcess() != null) {
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userTaskList = iteratorFindParentUserTasks(source.getSubProcess(), hasSequenceFlow, userTaskList);
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}
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// 根据类型,获取入口连线
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List<SequenceFlow> sequenceFlows = getElementIncomingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 类型为用户节点,则新增父级节点
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if (sequenceFlow.getSourceFlowElement() instanceof UserTask) {
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userTaskList.add((UserTask) sequenceFlow.getSourceFlowElement());
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continue;
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}
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// 类型为子流程,则添加子流程开始节点出口处相连的节点
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if (sequenceFlow.getSourceFlowElement() instanceof SubProcess) {
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// 获取子流程用户任务节点
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List<UserTask> childUserTaskList = findChildProcessUserTasks((StartEvent) ((SubProcess) sequenceFlow.getSourceFlowElement()).getFlowElements().toArray()[0], null, null);
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// 如果找到节点,则说明该线路找到节点,不继续向下找,反之继续
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if (childUserTaskList != null && childUserTaskList.size() > 0) {
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userTaskList.addAll(childUserTaskList);
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continue;
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}
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}
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// 继续迭代
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userTaskList = iteratorFindParentUserTasks(sequenceFlow.getSourceFlowElement(), hasSequenceFlow, userTaskList);
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}
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}
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return userTaskList;
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}
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/**
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* 根据正在运行的任务节点,迭代获取子级任务节点列表,向后找
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* @param source 起始节点
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* @param runTaskKeyList 正在运行的任务 Key,用于校验任务节点是否是正在运行的节点
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param userTaskList 需要撤回的用户任务列表
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* @return
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*/
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public static List<UserTask> iteratorFindChildUserTasks(FlowElement source, List<String> runTaskKeyList, Set<String> hasSequenceFlow, List<UserTask> userTaskList) {
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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userTaskList = userTaskList == null ? new ArrayList<>() : userTaskList;
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (source instanceof StartEvent && source.getSubProcess() != null) {
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userTaskList = iteratorFindChildUserTasks(source.getSubProcess(), runTaskKeyList, hasSequenceFlow, userTaskList);
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}
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// 根据类型,获取出口连线
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List<SequenceFlow> sequenceFlows = getElementOutgoingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 如果为用户任务类型,且任务节点的 Key 正在运行的任务中存在,添加
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if (sequenceFlow.getTargetFlowElement() instanceof UserTask && runTaskKeyList.contains((sequenceFlow.getTargetFlowElement()).getId())) {
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userTaskList.add((UserTask) sequenceFlow.getTargetFlowElement());
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continue;
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}
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// 如果节点为子流程节点情况,则从节点中的第一个节点开始获取
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if (sequenceFlow.getTargetFlowElement() instanceof SubProcess) {
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List<UserTask> childUserTaskList = iteratorFindChildUserTasks((FlowElement) (((SubProcess) sequenceFlow.getTargetFlowElement()).getFlowElements().toArray()[0]), runTaskKeyList, hasSequenceFlow, null);
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// 如果找到节点,则说明该线路找到节点,不继续向下找,反之继续
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if (childUserTaskList != null && childUserTaskList.size() > 0) {
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userTaskList.addAll(childUserTaskList);
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continue;
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}
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}
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// 继续迭代
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userTaskList = iteratorFindChildUserTasks(sequenceFlow.getTargetFlowElement(), runTaskKeyList, hasSequenceFlow, userTaskList);
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}
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}
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return userTaskList;
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}
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/**
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* 迭代获取子流程用户任务节点
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* @param source 起始节点
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param userTaskList 需要撤回的用户任务列表
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* @return
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*/
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public static List<UserTask> findChildProcessUserTasks(FlowElement source, Set<String> hasSequenceFlow, List<UserTask> userTaskList) {
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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userTaskList = userTaskList == null ? new ArrayList<>() : userTaskList;
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// 根据类型,获取出口连线
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List<SequenceFlow> sequenceFlows = getElementOutgoingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 如果为用户任务类型,且任务节点的 Key 正在运行的任务中存在,添加
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if (sequenceFlow.getTargetFlowElement() instanceof UserTask) {
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userTaskList.add((UserTask) sequenceFlow.getTargetFlowElement());
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continue;
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}
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// 如果节点为子流程节点情况,则从节点中的第一个节点开始获取
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if (sequenceFlow.getTargetFlowElement() instanceof SubProcess) {
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List<UserTask> childUserTaskList = findChildProcessUserTasks((FlowElement) (((SubProcess) sequenceFlow.getTargetFlowElement()).getFlowElements().toArray()[0]), hasSequenceFlow, null);
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// 如果找到节点,则说明该线路找到节点,不继续向下找,反之继续
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if (childUserTaskList != null && childUserTaskList.size() > 0) {
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userTaskList.addAll(childUserTaskList);
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continue;
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}
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}
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// 继续迭代
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userTaskList = findChildProcessUserTasks(sequenceFlow.getTargetFlowElement(), hasSequenceFlow, userTaskList);
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}
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}
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return userTaskList;
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}
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/**
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* 从后向前寻路,获取所有脏线路上的点
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* @param source 起始节点
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* @param passRoads 已经经过的点集合
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param targets 目标脏线路终点
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* @param dirtyRoads 确定为脏数据的点,因为不需要重复,因此使用 set 存储
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* @return
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*/
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public static Set<String> iteratorFindDirtyRoads(FlowElement source, List<String> passRoads, Set<String> hasSequenceFlow, List<String> targets, Set<String> dirtyRoads) {
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passRoads = passRoads == null ? new ArrayList<>() : passRoads;
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dirtyRoads = dirtyRoads == null ? new HashSet<>() : dirtyRoads;
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (source instanceof StartEvent && source.getSubProcess() != null) {
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dirtyRoads = iteratorFindDirtyRoads(source.getSubProcess(), passRoads, hasSequenceFlow, targets, dirtyRoads);
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}
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// 根据类型,获取入口连线
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List<SequenceFlow> sequenceFlows = getElementIncomingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 新增经过的路线
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passRoads.add(sequenceFlow.getSourceFlowElement().getId());
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// 如果此点为目标点,确定经过的路线为脏线路,添加点到脏线路中,然后找下个连线
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if (targets.contains(sequenceFlow.getSourceFlowElement().getId())) {
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dirtyRoads.addAll(passRoads);
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continue;
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}
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (sequenceFlow.getSourceFlowElement() instanceof SubProcess) {
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dirtyRoads = findChildProcessAllDirtyRoad((StartEvent) ((SubProcess) sequenceFlow.getSourceFlowElement()).getFlowElements().toArray()[0], null, dirtyRoads);
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// 是否存在子流程上,true 是,false 否
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Boolean isInChildProcess = dirtyTargetInChildProcess((StartEvent) ((SubProcess) sequenceFlow.getSourceFlowElement()).getFlowElements().toArray()[0], null, targets, null);
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if (isInChildProcess) {
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// 已在子流程上找到,该路线结束
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continue;
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}
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}
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// 继续迭代
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dirtyRoads = iteratorFindDirtyRoads(sequenceFlow.getSourceFlowElement(), passRoads, hasSequenceFlow, targets, dirtyRoads);
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}
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}
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return dirtyRoads;
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}
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/**
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* 迭代获取子流程脏路线
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* 说明,假如回退的点就是子流程,那么也肯定会回退到子流程最初的用户任务节点,因此子流程中的节点全是脏路线
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* @param source 起始节点
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param dirtyRoads 确定为脏数据的点,因为不需要重复,因此使用 set 存储
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* @return
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*/
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public static Set<String> findChildProcessAllDirtyRoad(FlowElement source, Set<String> hasSequenceFlow, Set<String> dirtyRoads) {
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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dirtyRoads = dirtyRoads == null ? new HashSet<>() : dirtyRoads;
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// 根据类型,获取出口连线
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List<SequenceFlow> sequenceFlows = getElementOutgoingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 添加脏路线
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dirtyRoads.add(sequenceFlow.getTargetFlowElement().getId());
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// 如果节点为子流程节点情况,则从节点中的第一个节点开始获取
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if (sequenceFlow.getTargetFlowElement() instanceof SubProcess) {
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dirtyRoads = findChildProcessAllDirtyRoad((FlowElement) (((SubProcess) sequenceFlow.getTargetFlowElement()).getFlowElements().toArray()[0]), hasSequenceFlow, dirtyRoads);
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}
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// 继续迭代
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dirtyRoads = findChildProcessAllDirtyRoad(sequenceFlow.getTargetFlowElement(), hasSequenceFlow, dirtyRoads);
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}
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}
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return dirtyRoads;
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}
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/**
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* 判断脏路线结束节点是否在子流程上
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* @param source 起始节点
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param targets 判断脏路线节点是否存在子流程上,只要存在一个,说明脏路线只到子流程为止
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* @param inChildProcess 是否存在子流程上,true 是,false 否
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* @return
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*/
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public static Boolean dirtyTargetInChildProcess(FlowElement source, Set<String> hasSequenceFlow, List<String> targets, Boolean inChildProcess) {
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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inChildProcess = inChildProcess == null ? false : inChildProcess;
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// 根据类型,获取出口连线
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List<SequenceFlow> sequenceFlows = getElementOutgoingFlows(source);
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if (sequenceFlows != null && !inChildProcess) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 如果发现目标点在子流程上存在,说明只到子流程为止
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if (targets.contains(sequenceFlow.getTargetFlowElement().getId())) {
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inChildProcess = true;
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break;
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}
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// 如果节点为子流程节点情况,则从节点中的第一个节点开始获取
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if (sequenceFlow.getTargetFlowElement() instanceof SubProcess) {
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inChildProcess = dirtyTargetInChildProcess((FlowElement) (((SubProcess) sequenceFlow.getTargetFlowElement()).getFlowElements().toArray()[0]), hasSequenceFlow, targets, inChildProcess);
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}
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// 继续迭代
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inChildProcess = dirtyTargetInChildProcess(sequenceFlow.getTargetFlowElement(), hasSequenceFlow, targets, inChildProcess);
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}
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}
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return inChildProcess;
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}
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/**
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* 迭代从后向前扫描,判断目标节点相对于当前节点是否是串行
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* 不存在直接回退到子流程中的情况,但存在从子流程出去到父流程情况
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* @param source 起始节点
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* @param isSequential 是否串行
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* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
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* @param targetKsy 目标节点
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* @return
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*/
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public static Boolean iteratorCheckSequentialReferTarget(FlowElement source, String targetKsy, Set<String> hasSequenceFlow, Boolean isSequential) {
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isSequential = isSequential == null ? true : isSequential;
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (source instanceof StartEvent && source.getSubProcess() != null) {
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isSequential = iteratorCheckSequentialReferTarget(source.getSubProcess(), targetKsy, hasSequenceFlow, isSequential);
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}
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// 根据类型,获取入口连线
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List<SequenceFlow> sequenceFlows = getElementIncomingFlows(source);
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if (sequenceFlows != null) {
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// 循环找到目标元素
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 如果目标节点已被判断为并行,后面都不需要执行,直接返回
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if (isSequential == false) {
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break;
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}
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// 这条线路存在目标节点,这条线路完成,进入下个线路
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if (targetKsy.equals(sequenceFlow.getSourceFlowElement().getId())) {
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continue;
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}
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if (sequenceFlow.getSourceFlowElement() instanceof StartEvent) {
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isSequential = false;
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break;
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}
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// 否则就继续迭代
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isSequential = iteratorCheckSequentialReferTarget(sequenceFlow.getSourceFlowElement(), targetKsy, hasSequenceFlow, isSequential);
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}
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}
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return isSequential;
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}
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/**
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* 从后向前寻路,获取到达节点的所有路线
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* 不存在直接回退到子流程,但是存在回退到父级流程的情况
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* @param source 起始节点
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* @param passRoads 已经经过的点集合
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* @param roads 路线
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* @return
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*/
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public static List<List<UserTask>> findRoad(FlowElement source, List<UserTask> passRoads, Set<String> hasSequenceFlow, List<List<UserTask>> roads) {
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passRoads = passRoads == null ? new ArrayList<>() : passRoads;
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roads = roads == null ? new ArrayList<>() : roads;
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hasSequenceFlow = hasSequenceFlow == null ? new HashSet<>() : hasSequenceFlow;
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// 如果该节点为开始节点,且存在上级子节点,则顺着上级子节点继续迭代
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if (source instanceof StartEvent && source.getSubProcess() != null) {
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roads = findRoad(source.getSubProcess(), passRoads, hasSequenceFlow, roads);
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}
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// 根据类型,获取入口连线
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List<SequenceFlow> sequenceFlows = getElementIncomingFlows(source);
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if (sequenceFlows != null && sequenceFlows.size() != 0) {
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for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
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if (hasSequenceFlow.contains(sequenceFlow.getId())) {
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continue;
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}
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// 添加已经走过的连线
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hasSequenceFlow.add(sequenceFlow.getId());
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// 添加经过路线
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if (sequenceFlow.getSourceFlowElement() instanceof UserTask) {
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passRoads.add((UserTask) sequenceFlow.getSourceFlowElement());
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}
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// 继续迭代
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roads = findRoad(sequenceFlow.getSourceFlowElement(), passRoads, hasSequenceFlow, roads);
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}
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} else {
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// 添加路线
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roads.add(passRoads);
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}
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return roads;
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}
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/**
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* 历史节点数据清洗,清洗掉又回滚导致的脏数据
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* @param allElements 全部节点信息
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* @param historicTaskInstanceList 历史任务实例信息,数据采用开始时间升序
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* @return
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*/
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public static List<String> historicTaskInstanceClean(Collection<FlowElement> allElements, List<HistoricTaskInstance> historicTaskInstanceList) {
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// 会签节点收集
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List<String> multiTask = new ArrayList<>();
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allElements.forEach(flowElement -> {
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if (flowElement instanceof UserTask) {
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// 如果该节点的行为为会签行为,说明该节点为会签节点
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if (((UserTask) flowElement).getBehavior() instanceof ParallelMultiInstanceBehavior || ((UserTask) flowElement).getBehavior() instanceof SequentialMultiInstanceBehavior) {
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multiTask.add(flowElement.getId());
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}
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}
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});
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// 循环放入栈,栈 LIFO:后进先出
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Stack<HistoricTaskInstance> stack = new Stack<>();
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historicTaskInstanceList.forEach(item -> stack.push(item));
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// 清洗后的历史任务实例
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List<String> lastHistoricTaskInstanceList = new ArrayList<>();
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// 网关存在可能只走了部分分支情况,且还存在跳转废弃数据以及其他分支数据的干扰,因此需要对历史节点数据进行清洗
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// 临时用户任务 key
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StringBuilder userTaskKey = null;
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// 临时被删掉的任务 key,存在并行情况
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List<String> deleteKeyList = new ArrayList<>();
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// 临时脏数据线路
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List<Set<String>> dirtyDataLineList = new ArrayList<>();
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// 由某个点跳到会签点,此时出现多个会签实例对应 1 个跳转情况,需要把这些连续脏数据都找到
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// 会签特殊处理下标
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int multiIndex = -1;
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// 会签特殊处理 key
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StringBuilder multiKey = null;
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// 会签特殊处理操作标识
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boolean multiOpera = false;
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while (!stack.empty()) {
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// 从这里开始 userTaskKey 都还是上个栈的 key
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// 是否是脏数据线路上的点
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final boolean[] isDirtyData = {false};
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for (Set<String> oldDirtyDataLine : dirtyDataLineList) {
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if (oldDirtyDataLine.contains(stack.peek().getTaskDefinitionKey())) {
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isDirtyData[0] = true;
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}
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}
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// 删除原因不为空,说明从这条数据开始回跳或者回退的
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// MI_END:会签完成后,其他未签到节点的删除原因,不在处理范围内
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if (stack.peek().getDeleteReason() != null && !stack.peek().getDeleteReason().equals("MI_END")) {
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// 可以理解为脏线路起点
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String dirtyPoint = "";
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if (stack.peek().getDeleteReason().indexOf("Change activity to ") >= 0) {
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dirtyPoint = stack.peek().getDeleteReason().replace("Change activity to ", "");
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}
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// 会签回退删除原因有点不同
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if (stack.peek().getDeleteReason().indexOf("Change parent activity to ") >= 0) {
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dirtyPoint = stack.peek().getDeleteReason().replace("Change parent activity to ", "");
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}
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FlowElement dirtyTask = null;
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// 获取变更节点的对应的入口处连线
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// 如果是网关并行回退情况,会变成两条脏数据路线,效果一样
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for (FlowElement flowElement : allElements) {
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if (flowElement.getId().equals(stack.peek().getTaskDefinitionKey())) {
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dirtyTask = flowElement;
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}
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}
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// 获取脏数据线路
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Set<String> dirtyDataLine = FlowableUtils.iteratorFindDirtyRoads(dirtyTask, null, null, Arrays.asList(dirtyPoint.split(",")), null);
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// 自己本身也是脏线路上的点,加进去
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dirtyDataLine.add(stack.peek().getTaskDefinitionKey());
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log.info(stack.peek().getTaskDefinitionKey() + "点脏路线集合:" + dirtyDataLine);
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// 是全新的需要添加的脏线路
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boolean isNewDirtyData = true;
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for (int i = 0; i < dirtyDataLineList.size(); i++) {
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// 如果发现他的上个节点在脏线路内,说明这个点可能是并行的节点,或者连续驳回
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// 这时,都以之前的脏线路节点为标准,只需合并脏线路即可,也就是路线补全
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if (dirtyDataLineList.get(i).contains(userTaskKey.toString())) {
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isNewDirtyData = false;
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dirtyDataLineList.get(i).addAll(dirtyDataLine);
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}
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}
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// 已确定时全新的脏线路
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if (isNewDirtyData) {
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// deleteKey 单一路线驳回到并行,这种同时生成多个新实例记录情况,这时 deleteKey 其实是由多个值组成
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// 按照逻辑,回退后立刻生成的实例记录就是回退的记录
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// 至于驳回所生成的 Key,直接从删除原因中获取,因为存在驳回到并行的情况
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deleteKeyList.add(dirtyPoint + ",");
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dirtyDataLineList.add(dirtyDataLine);
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}
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// 添加后,现在这个点变成脏线路上的点了
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isDirtyData[0] = true;
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}
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// 如果不是脏线路上的点,说明是有效数据,添加历史实例 Key
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if (!isDirtyData[0]) {
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lastHistoricTaskInstanceList.add(stack.peek().getTaskDefinitionKey());
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}
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// 校验脏线路是否结束
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for (int i = 0; i < deleteKeyList.size(); i ++) {
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// 如果发现脏数据属于会签,记录下下标与对应 Key,以备后续比对,会签脏数据范畴开始
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if (multiKey == null && multiTask.contains(stack.peek().getTaskDefinitionKey())
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&& deleteKeyList.get(i).contains(stack.peek().getTaskDefinitionKey())) {
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multiIndex = i;
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multiKey = new StringBuilder(stack.peek().getTaskDefinitionKey());
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}
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// 会签脏数据处理,节点退回会签清空
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// 如果在会签脏数据范畴中发现 Key改变,说明会签脏数据在上个节点就结束了,可以把会签脏数据删掉
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if (multiKey != null && !multiKey.toString().equals(stack.peek().getTaskDefinitionKey())) {
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deleteKeyList.set(multiIndex , deleteKeyList.get(multiIndex).replace(stack.peek().getTaskDefinitionKey() + ",", ""));
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multiKey = null;
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// 结束进行下校验删除
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multiOpera = true;
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}
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// 其他脏数据处理
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// 发现该路线最后一条脏数据,说明这条脏数据线路处理完了,删除脏数据信息
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// 脏数据产生的新实例中是否包含这条数据
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if (multiKey == null && deleteKeyList.get(i).contains(stack.peek().getTaskDefinitionKey())) {
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// 删除匹配到的部分
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deleteKeyList.set(i , deleteKeyList.get(i).replace(stack.peek().getTaskDefinitionKey() + ",", ""));
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}
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// 如果每组中的元素都以匹配过,说明脏数据结束
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if ("".equals(deleteKeyList.get(i))) {
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// 同时删除脏数据
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deleteKeyList.remove(i);
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dirtyDataLineList.remove(i);
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break;
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}
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}
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// 会签数据处理需要在循环外处理,否则可能导致溢出
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// 会签的数据肯定是之前放进去的所以理论上不会溢出,但还是校验下
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if (multiOpera && deleteKeyList.size() > multiIndex && "".equals(deleteKeyList.get(multiIndex))) {
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// 同时删除脏数据
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deleteKeyList.remove(multiIndex);
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dirtyDataLineList.remove(multiIndex);
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multiIndex = -1;
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multiOpera = false;
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}
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// pop() 方法与 peek() 方法不同,在返回值的同时,会把值从栈中移除
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// 保存新的 userTaskKey 在下个循环中使用
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userTaskKey = new StringBuilder(stack.pop().getTaskDefinitionKey());
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}
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log.info("清洗后的历史节点数据:" + lastHistoricTaskInstanceList);
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return lastHistoricTaskInstanceList;
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}
|
|
/**
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* 深搜递归获取流程未通过的节点
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* @param bpmnModel 流程模型
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* @param unfinishedTaskSet 未结束的任务节点
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* @param finishedSequenceFlowSet 已经完成的连线
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* @param finishedTaskSet 已完成的任务节点
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* @return
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*/
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public static Set<String> dfsFindRejects(BpmnModel bpmnModel, Set<String> unfinishedTaskSet, Set<String> finishedSequenceFlowSet, Set<String> finishedTaskSet) {
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if (ObjectUtil.isNull(bpmnModel)) {
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throw new ServiceException("流程模型不存在");
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}
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Collection<FlowElement> allElements = getAllElements(bpmnModel.getMainProcess().getFlowElements(), null);
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Set<String> rejectedSet = new HashSet<>();
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for (FlowElement flowElement : allElements) {
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// 用户节点且未结束元素
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if (flowElement instanceof UserTask && unfinishedTaskSet.contains(flowElement.getId())) {
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List<String> hasSequenceFlow = iteratorFindFinishes(flowElement, null);
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List<String> rejects = iteratorFindRejects(flowElement, finishedSequenceFlowSet, finishedTaskSet, hasSequenceFlow, null);
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rejectedSet.addAll(rejects);
|
}
|
}
|
return rejectedSet;
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}
|
|
/**
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* 迭代获取父级节点列表,向前找
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* @param source 起始节点
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* @param hasSequenceFlow 已经经过的连线的ID,用于判断线路是否重复
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* @return
|
*/
|
public static List<String> iteratorFindFinishes(FlowElement source, List<String> hasSequenceFlow) {
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hasSequenceFlow = hasSequenceFlow == null ? new ArrayList<>() : hasSequenceFlow;
|
|
// 根据类型,获取入口连线
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List<SequenceFlow> sequenceFlows = getElementIncomingFlows(source);
|
|
if (sequenceFlows != null) {
|
// 循环找到目标元素
|
for (SequenceFlow sequenceFlow: sequenceFlows) {
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// 如果发现连线重复,说明循环了,跳过这个循环
|
if (hasSequenceFlow.contains(sequenceFlow.getId())) {
|
continue;
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}
|
// 添加已经走过的连线
|
hasSequenceFlow.add(sequenceFlow.getId());
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FlowElement finishedElement = sequenceFlow.getSourceFlowElement();
|
// 类型为子流程,则添加子流程开始节点出口处相连的节点
|
if (finishedElement instanceof SubProcess) {
|
FlowElement firstElement = (StartEvent) ((SubProcess) finishedElement).getFlowElements().toArray()[0];
|
// 获取子流程的连线
|
hasSequenceFlow.addAll(iteratorFindFinishes(firstElement, null));
|
}
|
// 继续迭代
|
hasSequenceFlow = iteratorFindFinishes(finishedElement, hasSequenceFlow);
|
}
|
}
|
return hasSequenceFlow;
|
}
|
|
/**
|
* 根据正在运行的任务节点,迭代获取子级任务节点列表,向后找
|
* @param source 起始节点
|
* @param finishedSequenceFlowSet 已经完成的连线
|
* @param finishedTaskSet 已经完成的任务节点
|
* @param hasSequenceFlow 已经经过的连线的 ID,用于判断线路是否重复
|
* @param rejectedList 未通过的元素
|
* @return
|
*/
|
public static List<String> iteratorFindRejects(FlowElement source, Set<String> finishedSequenceFlowSet, Set<String> finishedTaskSet
|
, List<String> hasSequenceFlow, List<String> rejectedList) {
|
hasSequenceFlow = hasSequenceFlow == null ? new ArrayList<>() : hasSequenceFlow;
|
rejectedList = rejectedList == null ? new ArrayList<>() : rejectedList;
|
|
// 根据类型,获取出口连线
|
List<SequenceFlow> sequenceFlows = getElementOutgoingFlows(source);
|
|
if (sequenceFlows != null) {
|
// 循环找到目标元素
|
for (SequenceFlow sequenceFlow: sequenceFlows) {
|
// 如果发现连线重复,说明循环了,跳过这个循环
|
if (hasSequenceFlow.contains(sequenceFlow.getId())) {
|
continue;
|
}
|
// 添加已经走过的连线
|
hasSequenceFlow.add(sequenceFlow.getId());
|
FlowElement targetElement = sequenceFlow.getTargetFlowElement();
|
// 添加未完成的节点
|
if (finishedTaskSet.contains(targetElement.getId())) {
|
rejectedList.add(targetElement.getId());
|
}
|
// 添加未完成的连线
|
if (finishedSequenceFlowSet.contains(sequenceFlow.getId())) {
|
rejectedList.add(sequenceFlow.getId());
|
}
|
// 如果节点为子流程节点情况,则从节点中的第一个节点开始获取
|
if (targetElement instanceof SubProcess) {
|
FlowElement firstElement = (FlowElement) (((SubProcess) targetElement).getFlowElements().toArray()[0]);
|
List<String> childList = iteratorFindRejects(firstElement, finishedSequenceFlowSet, finishedTaskSet, hasSequenceFlow, null);
|
// 如果找到节点,则说明该线路找到节点,不继续向下找,反之继续
|
if (childList != null && childList.size() > 0) {
|
rejectedList.addAll(childList);
|
continue;
|
}
|
}
|
// 继续迭代
|
rejectedList = iteratorFindRejects(targetElement, finishedSequenceFlowSet, finishedTaskSet, hasSequenceFlow, rejectedList);
|
}
|
}
|
return rejectedList;
|
}
|
|
}
|