Activiti6-IdentityService(学习笔记)

IdentityService并不依赖我们的流程部署文件，所以

直接放使用方法的测试代码了：

public class IdentityServiceTest {
    private static final Logger LOGGER =  LoggerFactory.getLogger(IdentityServiceTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule();

    @Test
    public void testIdentity(){
        //其实IdentityService并不依赖我们的流程部署文件
        IdentityService identityService = activitiRule.getIdentityService();

        //通过IdentityService来new出user
        User user1 = identityService.newUser("user1");
        user1.setEmail("user1@136.com");
        User user2 = identityService.newUser("user2");
        user2.setEmail("user2@136.com");
        //设置完用户信息以后，保存到数据库一下
        identityService.saveUser(user1);
        identityService.saveUser(user2);

        //通过IdentityService来new出group
        Group group1 = identityService.newGroup("group1");
        Group group2 = identityService.newGroup("group2");
        //同样将用户组也存进数据库
        identityService.saveGroup(group1);
        identityService.saveGroup(group2);

        //将刚创建的两个user与group设立关系；
        identityService.createMembership("user1","group1");
        identityService.createMembership("user2","group1");
        identityService.createMembership("user1","group2");

        //通过identityService的createUserQuery()方法创建查询对象并通过用户组去 查询用户
        List<User> userList = identityService.createUserQuery().memberOfGroup("group1").listPage(0, 100);
        for (User user : userList) {
            LOGGER.info("user = {}", ToStringBuilder.reflectionToString(user, ToStringStyle.JSON_STYLE));
        }

        //查询一下组
        List<Group> groupList = identityService.createGroupQuery().groupMember("user1").listPage(0, 100);
        for (Group group : groupList) {
            LOGGER.info("group = {}",ToStringBuilder.reflectionToString(group, ToStringStyle.JSON_STYLE));
        }
    }
}

输出结果如下：

user = {"firstName":null,"lastName":null,"email":"user1@136.com","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user1","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}
user = {"firstName":null,"lastName":null,"email":"user2@136.com","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}
group = {"name":null,"type":null,"id":"group1","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}
group = {"name":null,"type":null,"id":"group2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}

ps：修改user名字的方式：

        //修改一下用户名
        User user11 = identityService.createUserQuery().userId("user1").singleResult();
        user11.setLastName("lyf");
       identityService.saveUser(user11);

输出如下：

user = {"firstName":null,"lastName":"lyf","email":"user1@136.com","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user1","revision":2,"isInserted":false,"isUpdated":false,"isDeleted":false}
user = {"firstName":null,"lastName":null,"email":"user2@136.com","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}
group = {"name":null,"type":null,"id":"group1","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}
group = {"name":null,"type":null,"id":"group2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}

在我们执行方法保存用户的过程中，IdentityService 具体的实现做的是什么事情呢？流程如下图：

先调用一个命令执行器，把saveUser这个对象封装成一个命令对象，也就是把user这个对象，构建成一个SaveUserCmd，就是把参数组装成了一个命令。

组装成命令以后，用命令执行器去执行这个命令，那么在执行这个命令的过程中，真正执行命令的方式是

实现了一个UserEntityManager 这样一个接口，它的实现会做一个调用我们底层数据库的修改，底层数据库的修改回去间接的调用UserDataManger这个又一次封装的接口，它接口的实现也就是MybatisUserDataManger，也就是经过多层的调用，IdentityService的saveUser经过一个链式调用以后，最终通过mybatis的操作方式DbSqlSession执行了一个insert操作把我们的数据保存到了数据库中。

源码如下：