Activiti

Activiti
--------

1 下载
http://www.activiti.org/download.html

2 安装
* 解压到任意目录
* 打开readme.html 链接 文档 和 发行日志
* 阅读 userguide 用户指南 docs/userguide/index.html 快速入门

3 源码

4 前提
* JDK 1.6+
* Ant 1.8.1+
http://ant.apache.org/bindownload.cgi
* Tomcat 6.0+
http://tomcat.apache.org/download-70.cgi
* Eclipse Indigo/Juno
http://www.eclipse.org/downloads/

5 问题列表
* 用户论坛
http://forums.activiti.org/en/viewforum.php?f=3
* JIRA issue tracker
http://jira.codehaus.org/browse/ACT

6 入门
1 JAVA_HOME 环境变量
2 复制 activiti-explorer.war 到 Tomcat 的 webapps 目录
3 启动 Tomcat 通过 startup.bat
4 访问流程浏览器应用: 启动流程, 分配任务, 查看/处理任务 ,管理流程引擎http://localhost:8080/activiti-explorer
账号:
kermit/kermit
默认使用 H2 数据库.

默认连接配置位置:
Activiti Explorer 应用目录 WEB-INF/classes/db.properties

7 DEMO 账户
UserId Password Roles
kermit kermit admin
gonzo gonzo manager
fozzie fozzie user

8 流程引擎
嵌入模式
独立模式

9 取消 DEMO 用户和组
Activiti Explorer 应用目录 WEB-INF/activiti-standalone-context.xml

10 配置
activiti.cfg.xml

11 Activiti API
Activiti 通过各种服务与流程引擎 ProcessEngine 交互,包括:

RuntimeService
RepositoryService
TaskService
ManagementService
IdentityService
HistoryService
FormService

12 部署流程
RepositoryService
    |
*.bpmn20.xml
    |
    DB (流程定义KEY 流程实例 KEY)

13 启动流程
RuntimeService
    |
    (ProcessInstance KEY)
    |
    DB
    |
    TaskService 查看/启动/完成任务

14 挂起/恢复流程
流程定义挂起时不能创建流程实例

RepositoryService
    |
    流程定义KEY

15 查询API
TaskService

16 表达式
* 值表达式
${myBean.myProperty}
* 方法表达式
${myBean.addNewOrder('orderName')}

17 配置WEB 应用启动/关闭监听器来启动/关闭流程引擎

public class ProcessEnginesServletContextListener implements ServletContextListener {
  
  public void contextInitialized(ServletContextEvent servletContextEvent) {
    ProcessEngines.init();
  }

  public void contextDestroyed(ServletContextEvent servletContextEvent) {
    ProcessEngines.destroy();
  }

}

18 整合Spring

19 自动流程部署

<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
  ...
  <property name="deploymentResources" value="classpath*:/org/activiti/spring/test/autodeployment/autodeploy.*.bpmn20.xml" />
</bean>
  
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
  <property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>

20 单元测试

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:org/activiti/spring/test/junit4/springTypicalUsageTest-context.xml")
public class MyBusinessProcessTest {
  
  @Autowired
  private RuntimeService runtimeService;
  
  @Autowired
  private TaskService taskService;
  
  @Autowired
  @Rule
  public ActivitiRule activitiSpringRule;
  
  @Test
  @Deployment
  public void simpleProcessTest() {
    runtimeService.startProcessInstanceByKey("simpleProcess");
    Task task = taskService.createTaskQuery().singleResult();
    assertEquals("My Task", task.getName());
  
    taskService.complete(task.getId());
    assertEquals(0, runtimeService.createProcessInstanceQuery().count());
   
  }
} 

<bean id="activitiRule" class="org.activiti.engine.test.ActivitiRule">
  <property name="processEngine" ref="processEngine" />
</bean>   

21 流程图
*.png

22 流程版本

23 流程仓库
<definitions
  xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
  xmlns:activiti="http://activiti.org/bpmn"
  targetNamespace="Examples">

24  BPMN 2.0
如何定义一个流程

<definitions 
  xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
  xmlns:activiti="http://activiti.org/bpmn"
  targetNamespace="Examples">

  <process id="myProcess" name="My First Process">
    ..
  </process>

</definitions>

25 表单
FormService
* 内置表单

表单属性: Map<String,String>
流程变量: Java Object

MAP <----------> Java Object

StartFormData(processDefinitionId)
TaskFormdata (taskId)

* 外部表单 自定义表单UI渲染
** 表单模板　打包到 *.bar 的 form/*-form.xml
** 关联任务
<userTask activiti:formKey=""
** 获取表单数据
FormService　StartFormData/TaskFormdata
** 渲染表单
** 提交表单数据
FormService submitStartFormData

26 Eclipse Designer
http://activiti.org/designer/update/
流程设计器

27 REST API
activiti-rest.war

28 示例



未完待续．．．