Activiti流程实例查询

电玩女神 2021-07-24 13:50 454阅读 0赞

**一 代码**

/**
    * Copyright (C), 2020-2020, 软件公司
    * FileName: ProcessInstanceQuery.java
    * Author:   cakin
    * Date:     2020/4/25
    * Description: 流程实例查询
    */
    package com.syc.activiti.chapter9;
    
    
    import java.util.HashSet;
    import java.util.List;
    import java.util.Set;
    
    
    import lombok.extern.slf4j.Slf4j;
    import org.activiti.engine.ProcessEngine;
    import org.activiti.engine.ProcessEngines;
    import org.activiti.engine.RepositoryService;
    import org.activiti.engine.RuntimeService;
    import org.activiti.engine.runtime.ProcessInstance;
    
    
    /**
    * @className: ProcessInstanceQuery
    * @description: 流程实例查询
    * @date: 2020/4/25
    * @author: cakin
    */
    @Slf4j
    public class ProcessInstanceQuery {
    
    
        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();
            // 部署流程描述文件
            repositoryService.createDeployment()
                    .addClasspathResource("bpmn/chapter9/ProcessInstanceQuery.bpmn")
                    .deploy();
            ProcessInstance pi1 = runtimeService.startProcessInstanceByKey(
                    "testProcess", "key1");
            ProcessInstance pi2 = runtimeService.startProcessInstanceByKey(
                    "testProcess", "key2");
            ProcessInstance pi3 = runtimeService.startProcessInstanceByKey(
                    "testProcess", "key3");
            // 将流程置为中断状态
            runtimeService.suspendProcessInstanceById(pi1.getId());
    
            /***********************************************************
    mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_,SUSPENSION_STATE_ from act_ru_execution;
    +--------+------+---------------+---------------+------------+----------------------+-------------+--------------------+--------------------------------+-------------------+
    | ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_         | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_                        | SUSPENSION_STATE_ |
    +--------+------+---------------+---------------+------------+----------------------+-------------+--------------------+--------------------------------+-------------------+
    | 227505 |    2 | 227505        | key1          | NULL       | testProcess:1:227504 | NULL        | 227505             | NULL                           |                 2 |
    | 227506 |    2 | 227505        | NULL          | 227505     | testProcess:1:227504 | NULL        | 227505             | messageintermediatecatchevent1 |                 2 |
    | 227510 |    1 | 227510        | key2          | NULL       | testProcess:1:227504 | NULL        | 227510             | NULL                           |                 1 |
    | 227511 |    1 | 227510        | NULL          | 227510     | testProcess:1:227504 | NULL        | 227510             | messageintermediatecatchevent1 |                 1 |
    | 227515 |    1 | 227515        | key3          | NULL       | testProcess:1:227504 | NULL        | 227515             | NULL                           |                 1 |
    | 227516 |    1 | 227515        | NULL          | 227515     | testProcess:1:227504 | NULL        | 227515             | messageintermediatecatchevent1 |                 1 |
    +--------+------+---------------+---------------+------------+----------------------+-------------+--------------------+--------------------------------+-------------------+
             **********************************************************/
    
            // 查询流程实例
            List<ProcessInstance> pis = runtimeService.createProcessInstanceQuery().processDefinitionKey("testProcess").list();
            log.info("使用processDefinitionKey方法查询流程实例：" + pis.size());
            pis = runtimeService.createProcessInstanceQuery().active().list();
            log.info("使用active方法查询流程实例：" + pis.size());
            pis = runtimeService.createProcessInstanceQuery().processInstanceBusinessKey("key2").list();
            log.info("使用processInstanceBusinessKey方法查询流程实例：" + pis.size());
            // 根据多个流程实例ID查询
            Set<String> ids = new HashSet<>();
            ids.add(pi1.getId());
            ids.add(pi2.getId());
            pis = runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
            log.info("使用processInstanceIds方法查询流程实例：" + pis.size());
        }
    }

**二 测试**

使用processDefinitionKey方法查询流程实例：3
    使用active方法查询流程实例：2
    使用processInstanceBusinessKey方法查询流程实例：1
    使用processInstanceIds方法查询流程实例：2