Activiti7进阶之组任务和网关
1 组任务
1.1 概述
- 在流程定义中的任务结点的assignee固定设置任务负责人,如果临时任务负责人变更则需要修改流程定义,系统的可扩展性差。针对这种情况可以给任务设置多个候选人,可以从候选人中选择参与者来完成任务。
1.2 设置任务候选人
- 在流程图中任务结点的配置中设置Candidate users,多个候选人之间用逗号隔开。
- 查看holiday.bpmn文件:
<process id="holiday" name="请假申请流程" isExecutable="true">
<startEvent id="startevent1" name="开始"></startEvent>
<userTask id="usertask1" name="填写请假申请单" activiti:assignee="张三"></userTask>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
<userTask id="usertask2" name="部门经理审批" activiti:candidateUsers="李四,王五"></userTask>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
<userTask id="usertask3" name="总经理审批" activiti:assignee="赵六"></userTask>
<sequenceFlow id="flow3" sourceRef="usertask2" targetRef="usertask3"></sequenceFlow>
<endEvent id="endevent1" name="结束"></endEvent>
<sequenceFlow id="flow4" sourceRef="usertask3" targetRef="endevent1"></sequenceFlow>
</process>
- 我们可以看到部门经理审批的审核人已经设置为"李四,王五"这样的一组候选人了。
1.3 组任务的办理流程
- 1️⃣查询组任务:
- 指定候选人,查询该候选人当前的待办任务。
- 候选人不能办理任务。
- 2️⃣拾取(claim)任务:
- 该组任务的所有候选人都能拾取任务。
- 所谓的拾取任务就是将候选热的组任务变成个人任务,即原来的候选人变成了任务的负责人。
- 如果拾取任务后不想办理任务,只需要将已经拾取的个人任务归还到组里面,那么此时的个人任务将变为组任务。
- 3️⃣查询个人任务:
- 查询方式同个人任务部分,根据assignee查询用户负责的个人任务。
- 4️⃣办理个人任务。
1.4 组任务办理流程的应用示例
1.4.1 准备工作
- 创建请假流程的BPMN文件(其中填写请假申请单的assignee是
张三
,部门经理审批的candidate users是李四,王五
,总经理审批的assignee是赵六
):
- 部署流程定义以及启动流程实例:
package com.sunxiaping;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.junit.Before;
import org.junit.Test;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
}
1.4.2 张三完成请假申请任务
- 示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
}
1.4.3 李四查询组任务
- 示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
/**
* 查询候选人组任务
*/
@Test
public void testQueryCandidateGroupTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
String processInstanceId = task.getProcessInstanceId();
System.out.println("流程实例的id = " + processInstanceId);
String name = task.getName();
System.out.println("任务名称 = " + name);
String assignee = task.getAssignee(); //null,说明当前的张三只是一个候选人,不是任务的负责人
System.out.println("任务的负责人是 = " + assignee);
}
}
}
1.4.4 李四拾取任务
- 示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
/**
* 查询候选人组任务
*/
@Test
public void testQueryCandidateGroupTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
String processInstanceId = task.getProcessInstanceId();
System.out.println("流程实例的id = " + processInstanceId);
String name = task.getName();
System.out.println("任务名称 = " + name);
String assignee = task.getAssignee(); //null,说明当前的张三只是一个候选人,不是任务的负责人
System.out.println("任务的负责人是 = " + assignee);
}
}
/**
* 用户拾取组任务:将候选人的组任务,变成个人任务。
* 注意:
* ①即使该用户不是候选人也能拾取,建议拾取的时候校验是否有资格拾取任务。
* ②组任务拾取之后,该任务就有负责人了,通过候选人将查询不到该任务
*/
@Test
public void testClaimTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.claim(taskId,candidateUser);
System.out.println("任务拾取完毕");
}
}
}
1.4.5 李四查询任务并完成任务
- 示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
/**
* 查询候选人组任务
*/
@Test
public void testQueryCandidateGroupTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
String processInstanceId = task.getProcessInstanceId();
System.out.println("流程实例的id = " + processInstanceId);
String name = task.getName();
System.out.println("任务名称 = " + name);
String assignee = task.getAssignee(); //null,说明当前的张三只是一个候选人,不是任务的负责人
System.out.println("任务的负责人是 = " + assignee);
}
}
/**
* 用户拾取组任务:将候选人的组任务,变成个人任务。
* 注意:
* ①即使该用户不是候选人也能拾取,建议拾取的时候校验是否有资格拾取任务。
* ②组任务拾取之后,该任务就有负责人了,通过候选人将查询不到该任务
*/
@Test
public void testClaimTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.claim(taskId,candidateUser);
System.out.println("任务拾取完毕");
}
}
/**
* 查询任务并完成任务
*/
@Test
public void testCompleteTask(){
String processDefinitionKey = "holiday";
String assignee = "李四";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
}
1.4.6 当前用户归还组任务
- 示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
/**
* 查询候选人组任务
*/
@Test
public void testQueryCandidateGroupTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
String processInstanceId = task.getProcessInstanceId();
System.out.println("流程实例的id = " + processInstanceId);
String name = task.getName();
System.out.println("任务名称 = " + name);
String assignee = task.getAssignee(); //null,说明当前的张三只是一个候选人,不是任务的负责人
System.out.println("任务的负责人是 = " + assignee);
}
}
/**
* 用户拾取组任务:将候选人的组任务,变成个人任务。
* 注意:
* ①即使该用户不是候选人也能拾取,建议拾取的时候校验是否有资格拾取任务。
* ②组任务拾取之后,该任务就有负责人了,通过候选人将查询不到该任务
*/
@Test
public void testClaimTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.claim(taskId,candidateUser);
System.out.println("任务拾取完毕");
}
}
/**
* 归还组任务
* 说明:建议归还任务前校验用户是否是该任务的负责人,也可以通过setAssignee方法将任务委托给其他用户负责,注意被委托的用户可以不是候选人(建议不要这么做)
*/
@Test
public void testUnclaim(){
String processDefinitionKey = "holiday";
String assignee = "李四";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
// 如果设置为null,归还组任务,该 任务没有负责人
taskService.setAssignee(taskId, null);
}
}
// /**
// * 查询任务并完成任务
// */
// @Test
// public void testCompleteTask(){
// String processDefinitionKey = "holiday";
//
// String assignee = "李四";
//
// TaskService taskService = processEngine.getTaskService();
//
// List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
//
// for (Task task : taskList) {
// String taskId = task.getId();
// System.out.println("任务的id = " + taskId);
//
// taskService.complete(taskId);
// }
// }
}
1.4.7 任务交接
-
任务交接就是任务负责人将任务交给其它候选人办理该任务。
-
示例:
package com.sunxiaping;
import org.activiti.engine.*;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
/**
* @author <a href="mailto:1900919313@qq.com">weiwei.xu</a>
* @version 1.0
* 2020-08-10 21:37
*/
public class GroupTest {
ProcessEngine processEngine = null;
@Before
public void before() {
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-cfg.xml");
processEngine = configuration.buildProcessEngine();
}
@Test
public void after() {
if (processEngine != null) {
processEngine.close();
}
}
/**
* 部署流程定义
*/
@Test
public void testDeployment() {
RepositoryService repositoryService = processEngine.getRepositoryService();
Deployment deployment = repositoryService.createDeployment()
.addClasspathResource("diagram/holiday.bpmn")
.addClasspathResource("diagram/holiday.png")
.name("请假申请流程")
.deploy();
String id = deployment.getId();
System.out.println("流程部署的id = " + id);
String name = deployment.getName();
System.out.println("流程部署的名称 = " + name);
}
/**
* 启动流程实例
*/
@Test
public void testStartProcessInstance() {
String processDefinitionKey = "holiday";
RuntimeService runtimeService = processEngine.getRuntimeService();
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey);
String id = processInstance.getId();
System.out.println("流程实例的id = " + id);
}
/**
* 张三完成请假申请任务
*/
@Test
public void testTaskZhangsan() {
String processDefinitionKey = "holiday";
String assignee = "张三";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.complete(taskId);
}
}
/**
* 查询候选人组任务
*/
@Test
public void testQueryCandidateGroupTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
String processInstanceId = task.getProcessInstanceId();
System.out.println("流程实例的id = " + processInstanceId);
String name = task.getName();
System.out.println("任务名称 = " + name);
String assignee = task.getAssignee(); //null,说明当前的张三只是一个候选人,不是任务的负责人
System.out.println("任务的负责人是 = " + assignee);
}
}
/**
* 用户拾取组任务:将候选人的组任务,变成个人任务。
* 注意:
* ①即使该用户不是候选人也能拾取,建议拾取的时候校验是否有资格拾取任务。
* ②组任务拾取之后,该任务就有负责人了,通过候选人将查询不到该任务
*/
@Test
public void testClaimTask() {
String processDefinitionKey = "holiday";
String candidateUser = "李四";
TaskService taskService = processEngine.getTaskService();
//查询组任务
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskCandidateUser(candidateUser).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.claim(taskId, candidateUser);
System.out.println("任务拾取完毕");
}
}
/**
* 任务交接
*/
@Test
public void testExchangeTask() {
String processDefinitionKey = "holiday";
String assignee = "李四";
TaskService taskService = processEngine.getTaskService();
List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
for (Task task : taskList) {
String taskId = task.getId();
System.out.println("任务的id = " + taskId);
taskService.setAssignee(taskId, "王五");
}
}
// /**
// * 归还组任务
// * 说明:建议归还任务前校验用户是否是该任务的负责人,也可以通过setAssignee方法将任务委托给其他用户负责,注意被委托的用户可以不是候选人(建议不要这么做)
// */
// @Test
// public void testUnclaim() {
// String processDefinitionKey = "holiday";
//
// String assignee = "李四";
//
// TaskService taskService = processEngine.getTaskService();
//
// List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
//
// for (Task task : taskList) {
// String taskId = task.getId();
// System.out.println("任务的id = " + taskId);
//
// // 如果设置为null,归还组任务,该 任务没有负责人
// taskService.setAssignee(taskId, null);
// }
// }
// /**
// * 查询任务并完成任务
// */
// @Test
// public void testCompleteTask(){
// String processDefinitionKey = "holiday";
//
// String assignee = "李四";
//
// TaskService taskService = processEngine.getTaskService();
//
// List<Task> taskList = taskService.createTaskQuery().processDefinitionKey(processDefinitionKey).taskAssignee(assignee).list();
//
// for (Task task : taskList) {
// String taskId = task.getId();
// System.out.println("任务的id = " + taskId);
//
// taskService.complete(taskId);
// }
// }
}
1.4.8 数据库表操作
- act_ru_task:任务执行表,记录当前执行的任务,由于该任务当前是组任务,所有的assignee为空,当拾取任务后该字段就是拾取用户的id。
- act_ru_identitylink:任务参与者,记录当前参与任务用户或组,当前任务如果设置了候选人,会向该表插入候选人记录,有几个候选人就插入几个。
- act_ru_identitylink对应一张历史表act_hi_identitylink,向act_ru_identitylink插入记录的同时也会向历史表插入记录。
2 网关
2.1 排他网关
2.1.1 什么是排他网关?
- 排他网关(异或网关或基于数据的排他网关),用来在流程中实现决策。当流程执行到这个网关的时候,所有分支都会判断条件是否为true,如果为true则执行该分支。
注意:
- 排他网关只会选择一个为true的分支执行(即使有两个分支条件都为true,排他网关也只会选择一条分支去执行)。
2.1.2 流程定义
- 如果不用排他网关,如果条件都满足或都不满足,流程就结束(异常结束)了。
- 如果使用了排他网关来决定分支的走向,如下:
注意:
- 如果从网关出去的所有分支都不满足条件,系统将抛出异常。换言之,经过排他网关有且仅有一条分支。
2.2 并行网关
2.2.1 什么是并行网关?
- 并行网关允许将流程分成多条分支,也可以把多条分支汇聚到一起,并行网关的功能是基于进入和外出的顺序流的。
- Fork分支:并行后的所有外出顺序流,为每个顺序流都创建一个并行分支。
- Join汇聚:所有到达并行网关,在此等待的进入分支,直到所有进入顺序流的分支都到达以后,流程就会通过汇聚网关。
注意:
- 如果桶一个并行网关有多个进入和多个外出顺序流,它就同时具有分支和汇聚功能。这时,网关会先汇聚所有进入的顺序流,然后再切分成多个并行分支。
- 和其他网关不同的是,并行网关并不会解析条件。即使顺序流中定义了条件,也会被忽略。
2.2.2 流程定义
2.3 包含网关
2.3.1 什么是包含网关?
- 包含网关可以看做是排他网关和并行网关的结合体。和排他网关一样,你可以在外出顺序流上定义条件,包含网关会解析它们。但是主要的区别是包含网关可以选择多于一条顺序流,这和并行网关一样。
- 包含网关的功能是基于进入和外出顺序流的:
- 分支:所有外出顺序流的条件都会被解析,结果为true的顺序流会以并行方式继续执行,会为每个顺序流创建一个分支。
- 汇聚:所有并行分支到达包含网关,会进入等待状态,直到每个包含流程的进入顺序流的分支都到达。这是和并行网关的最大不同。换言之,包含网关只会等待被选中执行了的进入顺序流。在汇聚之后,流程会穿过包含网关继续执行。
2.3.2 流程定义
- 企业体检流程,公司全体员工进行常规项检查、抽血化验,公司管理层除常规检查和抽血化验还要进行增加项检查。