向后加签
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package com.snow.flowable.cmd;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.collections.CollectionUtils;
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import org.flowable.bpmn.model.*;
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import org.flowable.bpmn.model.Process;
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import org.flowable.common.engine.api.FlowableException;
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import org.flowable.common.engine.api.FlowableObjectNotFoundException;
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import org.flowable.common.engine.impl.interceptor.Command;
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import org.flowable.common.engine.impl.interceptor.CommandContext;
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import org.flowable.engine.impl.cmd.AbstractDynamicInjectionCmd;
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import org.flowable.engine.impl.dynamic.BaseDynamicSubProcessInjectUtil;
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import org.flowable.engine.impl.dynamic.DynamicUserTaskBuilder;
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import org.flowable.engine.impl.persistence.entity.DeploymentEntity;
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import org.flowable.engine.impl.persistence.entity.ExecutionEntity;
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import org.flowable.engine.impl.persistence.entity.ProcessDefinitionEntity;
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import org.flowable.engine.impl.util.CommandContextUtil;
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import org.flowable.task.service.TaskService;
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import org.flowable.task.service.impl.persistence.entity.TaskEntity;
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import java.util.Collections;
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import java.util.List;
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/**
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* @author qimingjin
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* @Title: 动态加签
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* @Description:
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* @date 2021/6/16 14:57
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*/
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@Slf4j
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@AllArgsConstructor
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public class AfterSignUserTaskCmd extends AbstractDynamicInjectionCmd implements Command<Void> {
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//流程实例id
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protected String processInstanceId;
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//后加签的节点信息
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private DynamicUserTaskBuilder signUserTaskBuilder;
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private String taskId;
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@Override
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public Void execute(CommandContext commandContext) {
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createDerivedProcessDefinitionForProcessInstance(commandContext,processInstanceId);
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return null;
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}
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@Override
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protected void updateBpmnProcess(CommandContext commandContext, Process process, BpmnModel bpmnModel, ProcessDefinitionEntity processDefinitionEntity, DeploymentEntity deploymentEntity) {
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TaskService taskService = CommandContextUtil.getTaskService(commandContext);
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TaskEntity task = taskService.getTask(taskId);
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if(task==null){
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throw new FlowableObjectNotFoundException("task:"+taskId+" not found");
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}
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//查找当前节点对应的执行执行实体(感觉兴趣的可以搜下流程执行的实例信息 表为ACT_RU_EXECUTION)
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ExecutionEntity currentExecutionEntity = CommandContextUtil.getExecutionEntityManager(commandContext).findById(task.getExecutionId());
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if(currentExecutionEntity==null){
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throw new FlowableObjectNotFoundException("task:"+taskId+",execution:"+task.getExecutionId()+" not found");
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}
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//定义的节点id
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String activityId = currentExecutionEntity.getActivityId();
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FlowElement flowElement = process.getFlowElement(activityId,true);
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if(!(flowElement instanceof Task)){
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throw new FlowableException("task type error");
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}
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Activity activity = (Activity) flowElement;
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//由于是后加签所以需要获取当前流程节点流出的sequence
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SequenceFlow currentTaskOutSequenceFlow = activity.getOutgoingFlows().get(0);
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//定义新的节点
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UserTask addUserTask = new UserTask();
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//流程的id 可以在调用的时候传入 也可以根据flwoable提供的方法生成
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String id=signUserTaskBuilder.getId();
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if (id == null) {
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id=signUserTaskBuilder.nextTaskId(process.getFlowElementMap());
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}
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addUserTask.setId(id);
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addUserTask.setName(signUserTaskBuilder.getName());
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addUserTask.setAssignee(signUserTaskBuilder.getAssignee());
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process.addFlowElement(addUserTask);
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signUserTaskBuilder.setDynamicTaskId(id);
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String flowId = "sequenceFlow-"+CommandContextUtil.getProcessEngineConfiguration(commandContext).getIdGenerator().getNextId();
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SequenceFlow newSequenceFlow = this.createSequenceFlow(addUserTask.getId(),currentTaskOutSequenceFlow.getTargetFlowElement().getId());
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newSequenceFlow.setId(flowId);
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process.addFlowElement(newSequenceFlow);
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activity.setOutgoingFlows(Collections.singletonList(newSequenceFlow));
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//修改原有sequence 将原来的sequence的taget改为新的节点
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currentTaskOutSequenceFlow.setTargetFlowElement(addUserTask);
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currentTaskOutSequenceFlow.setTargetRef(addUserTask.getId());
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bpmnModel.getLocationMap().clear();
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bpmnModel.getFlowLocationMap().clear();
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bpmnModel.getLabelLocationMap().clear();
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//当前流程的重新定义
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BaseDynamicSubProcessInjectUtil.processFlowElements(commandContext, process, bpmnModel, processDefinitionEntity, deploymentEntity);
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}
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@Override
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protected void updateExecutions(CommandContext commandContext, ProcessDefinitionEntity processDefinitionEntity, ExecutionEntity executionEntity, List<ExecutionEntity> list) {
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}
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public SequenceFlow createSequenceFlow(String from ,String to){
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SequenceFlow flow=new SequenceFlow();
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flow.setSourceRef(from);
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flow.setTargetRef(to);
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return flow;
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}
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}
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