Activiti工作流之流程分支

回顾:

工作流之flow管理

10张表:

select * from act_re_deployment;

select * from act_re_procdef;

select * from act_ge_bytearray;

select * from act_ru_execution;

select * from act_ru_task;

select * from act_hi_taskinst;

select * from act_hi_procinst;

select * from act_hi_actinst;

select * from act_hi_varinst;

select * from act_ru_variable;

新建bpmn图, 流程定义的key设置为”ruzhi”:

在”经理审批通过”和”发送老板审批”的分支上设置流程变量:

① 测试: 部署–>启动流程, 此时流程执行到”经理审批”的节点上, 然后选择流程变量的分支为”经理审批通过”执行下去

package com.rl.activiti.test1;

import java.util.HashMap;
import java.util.Map;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.DeploymentBuilder;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;

public class ActivitiTest1 {

    //定义一个成员变量
    RepositoryService repositoryService;
    
    RuntimeService runtimeService;
    
    TaskService taskService;
    
    /**
     * 获取流程引擎
     */
    @Before
    public void setUp() throws Exception {
        //获取流程引擎对象, 默认是读取配置文件"activiti.cfg.xml"
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        //获取RepositoryService接口的实现类
        repositoryService = processEngine.getRepositoryService();
        runtimeService = processEngine.getRuntimeService();
        taskService = processEngine.getTaskService();
    }

    /**
     * 部署流程①: 通过单文件的形式加载部署
     */
    @Test
    public void delpoyActiviti1() {
        //获取部署对象
        DeploymentBuilder deploymentBuilder = repositoryService.createDeployment();
        deploymentBuilder.addClasspathResource("diagrams1/ruzhi.bpmn")
                         .name("入职流程").category("入职")
                         .addClasspathResource("diagrams1/ruzhi.png");
        //部署流程
        deploymentBuilder.deploy();
    }
    
    /**
     * 启动流程
     */
    @Test
    public void startProcess() {
        //根据流程的key来启动相对应的流程, 默认是启动最新版本的流程
        runtimeService.startProcessInstanceByKey("ruzhi");
    }
    
    /**
     * 完成任务: 执行"经理审批通过"分支
     */
    @Test
    public void completeTask1(){
        String assignee = "manager";
        Task task = taskService.createTaskQuery()
                .processDefinitionKey("ruzhi").taskAssignee(assignee).singleResult();
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("outcome", "经理审批通过");
        taskService.complete(task.getId(), map);
    }
    
}

结果: “经理审批通过”分支完成, 任务结束.

② 测试: 执行”发送老板审批”分支

/**
     * 完成任务: 执行"发送老板审批"分支
     */
    @Test
    public void completeTask2(){
        String assignee = "manager";
        Task task = taskService.createTaskQuery()
                .processDefinitionKey("ruzhi").taskAssignee(assignee).singleResult();
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("outcome", "发送老板审批");
        taskService.complete(task.getId(), map);
    }
    
    /**
     * 老板办理任务
     */
    @Test
    public void completeTask3(){
        String assignee = "boss";
        Task task = taskService.createTaskQuery()
                .processDefinitionKey("ruzhi").taskAssignee(assignee).singleResult();
        taskService.complete(task.getId());
    }

结果: “发送老板审批”分支完成, 任务结束.

获取outcome和income的连接线

获取分支连接线非常重要, 可以在项目中自动生成按钮.

测试代码:

@Test
    public void getOutcomeFlow(){
        String assignee = "manager";
        Task task = taskService.createTaskQuery()
                                .processDefinitionKey("ruzhi").taskAssignee(assignee).singleResult();
        //获取流程定义
//        repositoryService.createProcessDefinitionQuery().processDefinitionKey("ruzhi").singleResult();
        //或者
        //获取流程定义实体的对象(不需要创建查询对象*****)
        ProcessDefinitionEntity processDefinition = (ProcessDefinitionEntity) repositoryService
                .getProcessDefinition(task.getProcessDefinitionId());
        //获取流程实例
        ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                .processInstanceId(task.getProcessInstanceId()).singleResult();
        //获取当前流程实例的活动id
        String activityId = processInstance.getActivityId();
        //获取当前流程定义中的活动节点(包括开始和结束节点)
        ActivityImpl activityImpl = processDefinition.findActivity(activityId);
        //获取输出的flow
        List<PvmTransition> transitionList = activityImpl.getOutgoingTransitions();//改为getIncomingTransitions()就是获取income的连接线
        for(PvmTransition transition: transitionList){
            String flowName = (String) transition.getProperty("name");
            System.out.println(flowName);
        }
    }

问题: 获取当前节点的来路income

新建一个bpmn文件:

测试代码:

/**
     * 获取来路
     */
    public List<String> getIncomeFlow(String assignee){
        List<String> strList = new ArrayList<String>();
        Task task = taskService.createTaskQuery()
                .processDefinitionKey("leave_bill").taskAssignee(assignee).singleResult();
        ProcessDefinitionEntity processDefinition = (ProcessDefinitionEntity) repositoryService
                .getProcessDefinition(task.getProcessDefinitionId());
        //获取流程实例
        ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                .processInstanceId(task.getProcessInstanceId()).singleResult();
        //获取当前流程实例的活动id
        String activityId = processInstance.getActivityId();
        //获取当前流程定义中的活动节点(包括开始和结束节点)
        ActivityImpl activityImpl = processDefinition.findActivity(activityId);
        //获取输出的flow
        List<PvmTransition> transitionList = activityImpl.getIncomingTransitions();
        for(PvmTransition transition: transitionList){
            String flowName = (String) transition.getProperty("name");
            strList.add(flowName);
        }
        return strList;
    }
    
    /**
     * 获取当前节点的来路
     * ① 获得当前节点的所有来路（其中一条是来路）
     * ② 拿到上一步的节点（历史节点），找到它的所有出路（其中有一条出路是当前节点的来路）
     * ③ 找到以上两步中的重复的连线就是当前节点的来路
     */
    @Test
    public void getIncomingFlow(){
        String assignee = "employee";
        List<String> preActivityOutcomeList = new ArrayList<String>();
        Task task = taskService.createTaskQuery().processDefinitionKey("leave_bill")
                .taskAssignee(assignee).singleResult();
        List<HistoricActivityInstance> historicActivityInstanceList = historyService
                .createHistoricActivityInstanceQuery()
                .processInstanceId(task.getProcessInstanceId())
                .finished()//已经结束的活动节点
                .orderByHistoricActivityInstanceStartTime().desc().list();
        for(HistoricActivityInstance historicActivityInstance: historicActivityInstanceList){
            System.out.println("历史活动ID: "+historicActivityInstance.getActivityId());
            System.out.println("历史活动名称: "+historicActivityInstance.getActivityName());
        }
        //获取当前节点的前一个活动节点
        HistoricActivityInstance historicActivityInstance = historicActivityInstanceList.get(0);
        //获取前一个活动节点的id
        String activityId = historicActivityInstance.getActivityId();
        //获取流程定义实体的对象(不需要创建查询对象*****)
        ProcessDefinitionEntity processDefinition = (ProcessDefinitionEntity) repositoryService
                .getProcessDefinition(task.getProcessDefinitionId());
        //获取前一个活动节点的实现类对象
        ActivityImpl activityImpl = processDefinition.findActivity(activityId);
        //获取前一个活动节点的所有出路
        List<PvmTransition> outgoingList = activityImpl.getOutgoingTransitions();
        for(PvmTransition outgoing: outgoingList){
            String flowName = (String) outgoing.getProperty("name");
            System.out.println(flowName);
            preActivityOutcomeList.add(flowName);
        }
        //获取当前节点的所有入路
        List<String> incomeFlows = this.getIncomeFlow(assignee);
        System.out.println(incomeFlows);
        
        String incomeFlow = null;
        loop : for(String income: incomeFlows){
            for(String outcome: preActivityOutcomeList){
                if(income.equals(outcome)){
                    incomeFlow = income;//incomeFlow = outcome;
                    break loop;
                }
            }
        }
        System.out.println("当前节点的来路是: "+incomeFlow);
    }

原文链接：https://blog.csdn.net/ip_JL/article/details/83893489

你可能也喜欢