Activiti流程参数实战

一代码与数据库变化

/**
* Copyright (C), 2020-2020, 软件公司
* FileName: SetVariableLocal.java
* Author:   cakin
* Date:     2020/4/21
* Description: 流程参数作用域
*/
package com.syc.activiti;


import java.util.List;


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.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;


/**
* @className: SetVariableLocal
* @description: 流程参数作用域
* @date: 2020/4/21
* @author: cakin
*/
public class SetVariableLocal {
    public static void main( String[] args ) {
        // 创建流程引擎
        ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
        // 得到流程存储服务实例
        RepositoryService repositoryService = engine.getRepositoryService();
        // 得到运行时服务组件
        RuntimeService runtimeService = engine.getRuntimeService();
        // 得到任务
        TaskService taskService = engine.getTaskService();
        // 部署流程描述文件
        repositoryService.createDeployment()
                .addClasspathResource("bpmn/localVariable.bpmn20.xml").deploy();
        //启动流程
        ProcessInstance pi = runtimeService.startProcessInstanceByKey("vacationRequest");
        //查询全部的任务，得到相应的执行流，设置不同的参数
        List<Task> tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
/************************************************************************************** 当执行到这里
mysql> select * from act_ru_execution;
ERROR 1046 (3D000): No database selected
mysql> use act;
Database changed
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| 182505 |    1 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
| 182506 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask1 |
| 182509 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask2 |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+

mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_         | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| 182511 |    1 | 182506        | 182505        | vacationRequest:7:182504 | Manager Audit | NULL            | NULL         | usertask1     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.638 |
| 182513 |    1 | 182509        | 182505        | vacationRequest:7:182504 | HR Audit      | NULL            | NULL         | usertask2     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.703 |
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
2 rows in set (0.00 sec)

mysql> select * from act_ru_variable;
Empty set (0.00 sec)
********************************************************************************/

        for (Task task : tasks) {
            Execution exe = runtimeService.createExecutionQuery()
                    .executionId(task.getExecutionId()).singleResult();
            if ("Manager Audit".equals(task.getName())) {
                //经理审核节点，设置Local参数
                runtimeService.setVariableLocal(exe.getId(), "managerVar", "manager var");
            } else {
                //HR审核节点，设置全局参数
                runtimeService.setVariable(exe.getId(), "hrVar", "hr var");
            }
        }
/************************************************************************************** 当执行到这里
mysql> select * from act_ru_execution;
ERROR 1046 (3D000): No database selected
mysql> use act;
Database changed
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| 182505 |    1 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
| 182506 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask1 |
| 182509 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask2 |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+

mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_         | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| 182511 |    1 | 182506        | 182505        | vacationRequest:7:182504 | Manager Audit | NULL            | NULL         | usertask1     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.638 |
| 182513 |    1 | 182509        | 182505        | vacationRequest:7:182504 | HR Audit      | NULL            | NULL         | usertask2     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.703 |
+--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
2 rows in set (0.00 sec)

mysql> select * from act_ru_variable;
Empty set (0.00 sec)
********************************************************************************/
        //两个执行流时输出参数
        for (Task task : tasks) {
            Execution exe = runtimeService.createExecutionQuery()
                    .executionId(task.getExecutionId()).singleResult();
            if ("Manager Audit".equals(task.getName())) {
                System.out.println("使用getVariableLocal方法获取经理参数："
                        + runtimeService.getVariableLocal(exe.getId(), "managerVar"));
                System.out.println("使用getVariable方法获取经理参数："
                        + runtimeService.getVariableLocal(exe.getId(), "managerVar"));
            } else {
                System.out.println("使用getVariableLocal方法获取HR参数："
                        + runtimeService.getVariableLocal(exe.getId(), "hrVar"));
                System.out.println("使用getVariable方法获取HR参数："
                        + runtimeService.getVariable(exe.getId(), "hrVar"));
            }
        }
        //完成任务
        for (Task task : tasks) {
            taskService.complete(task.getId());
        }
        System.out.println("========  完成流程分支后     ========");

/************************************************************************************** 当执行到这里
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| 182505 |    3 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
| 182509 |    3 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask3 |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
2 rows in set (0.00 sec)

mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_    | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| 182519 |    1 | 182509        | 182505        | vacationRequest:7:182504 | End Task | NULL            | NULL         | usertask3     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:15:49.497 |
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
1 row in set (0.00 sec)

mysql> select * from act_ru_variable;
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
| ID_    | REV_ | TYPE_  | NAME_ | EXECUTION_ID_ | PROC_INST_ID_ | TASK_ID_ | BYTEARRAY_ID_ | DOUBLE_ | LONG_ | TEXT_  | TEXT2_ |
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
| 182515 |    1 | string | hrVar | 182505        | 182505        | NULL     | NULL          |    NULL |  NULL | hr var | NULL   |
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
1 row in set (0.00 sec)
********************************************************************************/

        //重新查找流程任务
        tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
        for (Task task : tasks) {
            System.out.println("当前流程节点：" + task.getName());
            Execution exe = runtimeService.createExecutionQuery()
                    .executionId(task.getExecutionId()).singleResult();
            System.out.println("经理参数：" + runtimeService.getVariable(exe.getId(), "managerVar"));
            System.out.println("HR参数：" + runtimeService.getVariable(exe.getId(), "hrVar"));
        }
    }

/************************************************************************************** 当执行到这里
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
| 182505 |    3 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
| 182509 |    3 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask3 |
+--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
2 rows in set (0.00 sec)

mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_    | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
| 182519 |    1 | 182509        | 182505        | vacationRequest:7:182504 | End Task | NULL            | NULL         | usertask3     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:15:49.497 |
+--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
1 row in set (0.00 sec)

mysql> select * from act_ru_variable;
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
| ID_    | REV_ | TYPE_  | NAME_ | EXECUTION_ID_ | PROC_INST_ID_ | TASK_ID_ | BYTEARRAY_ID_ | DOUBLE_ | LONG_ | TEXT_  | TEXT2_ |
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
| 182515 |    1 | string | hrVar | 182505        | 182505        | NULL     | NULL          |    NULL |  NULL | hr var | NULL   |
+--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
1 row in set (0.00 sec)
********************************************************************************/
}

二执行结果

使用getVariableLocal方法获取经理参数：manager var
使用getVariable方法获取经理参数：manager var
使用getVariableLocal方法获取HR参数：null
使用getVariable方法获取HR参数：hr var
========  完成流程分支后     ========
当前流程节点：End Task
经理参数：null
HR参数：hr var

来源：oschina

链接：https://my.oschina.net/u/4287100/blog/3300972

标签

activiti