Examples of org.activiti.engine.TaskService.claim()

org.activiti.engine.TaskService.claim()
Claim responsibility for a task: the given user is made assignee for the task. The difference with {@link #setAssignee(String,String)} is that here a check is done if the task already has a user assigned to it. No check is done whether the user is known by the identity component. @param taskId task to claim, cannot be null. @param userId user that claims the task. When userId is null the task is unclaimed,assigned to no one. @throws ActivitiObjectNotFoundException when the task doesn't exist. @throws ActivitiTaskAlreadyClaimedException when the task is already claimed by another user.

        .taskCandidateGroup(itSupportGroup.getId()).singleResult();
    assertThat(approveCriticalIssueTask.getName(),
        equalTo("Approve Critical Issue"));


    // claim the task for the user 'itguy'
    taskService.claim(approveCriticalIssueTask.getId(), itguy.getId());


    // approve the request and complete the task
    Map<String, Object> taskParams = new HashMap<String, Object>();
    taskParams.put("requestApproved", "true");
    taskService.complete(approveCriticalIssueTask.getId(), taskParams);

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    @RequestMapping("workspace-claimTask")
    public String claimTask(@RequestParam("taskId") String taskId) {
        String userId = SpringSecurityUtils.getCurrentUserId();


        TaskService taskService = processEngine.getTaskService();
        taskService.claim(taskId, userId);


        return "redirect:/bpm/workspace-listPersonalTasks.do";
    }


    /**

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                        if (identityLink.getUserId() != null && identityLink.getUserId().equals(userId)) {
                            // 必须删除link，否则报错
                            taskEntity.deleteUserIdentityLink(identityLink.getUserId(), "candidate");


                            // 签收触发TASK_ASSIGNED
                            taskService.claim(taskEntity.getId(), userId);
                        } else if (groupIds.contains(identityLink.getGroupId())) {
                            // 必须删除link，否则报错
                            taskEntity.deleteGroupIdentityLink(identityLink.getGroupId(), "candidate");


                            // 签收触发TASK_ASSIGNED

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                        } else if (groupIds.contains(identityLink.getGroupId())) {
                            // 必须删除link，否则报错
                            taskEntity.deleteGroupIdentityLink(identityLink.getGroupId(), "candidate");


                            // 签收触发TASK_ASSIGNED
                            taskService.claim(taskEntity.getId(), userId);
                        }
                    }
                }
            }
        } else {

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    assertNotNull(processInstance.getId());
    System.out.println("id " + processInstance.getId() + " " + processInstance.getProcessDefinitionId());
    
    TaskService taskService = activitiRule.getTaskService();
    Task task = taskService.createTaskQuery().taskCandidateGroup("drawer").singleResult();
    taskService.claim(task.getId(), "aa");
    
    variableMap = new HashMap<String, Object>();
    variableMap.put("approved", true);
    taskService.complete(task.getId(), variableMap);

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    assertNotNull(processInstance.getId());
    System.out.println("id " + processInstance.getId() + " " + processInstance.getProcessDefinitionId());
    
    TaskService taskService = activitiRule.getTaskService();
    Task task = taskService.createTaskQuery().taskCandidateGroup("drawer").singleResult();
    taskService.claim(task.getId(), "aa");
    
    variableMap = new HashMap<String, Object>();
    variableMap.put("approved", false);
    variableMap.put("applyer", "bb");
    taskService.complete(task.getId(), variableMap);

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    assertNotNull(processInstance.getId());
    System.out.println("id " + processInstance.getId() + " " + processInstance.getProcessDefinitionId());
    
    TaskService taskService = activitiRule.getTaskService();
    Task task = taskService.createTaskQuery().taskCandidateGroup("drawer").singleResult();
    taskService.claim(task.getId(), "aa");
    
    variableMap = new HashMap<String, Object>();
    variableMap.put("approved", false);
    variableMap.put("applyer", "bb");
    taskService.complete(task.getId(), variableMap);

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    Task task = taskService.createTaskQuery().singleResult();
    assertNull(task.getAssignee());


    // 签收
    taskService.claim(task.getId(), "user1");
    task = taskService.createTaskQuery().singleResult();
    assertNull(task.getOwner());
    assertNotNull(task.getAssignee());


    // 委派

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    TaskService taskService = activitiRule.getTaskService();
    Map<String, Object> vars = new HashMap<String, Object>();


    // 签收并完成第一个任务
    Task task = taskService.createTaskQuery().singleResult();
    taskService.claim(task.getId(), "user1");
    vars.put("taskTwoAssignee", "user2");
    taskService.complete(task.getId(), vars);


    // 完成第二个任务
    Task task2 = taskService.createTaskQuery().taskAssignee("user2").singleResult();

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    TaskService taskService = activitiRule.getTaskService();
    assertEquals(1, taskService.createTaskQuery().taskCandidateUser("1").count());
    assertEquals(1, taskService.createTaskQuery().taskCandidateUser("2").count());
    assertEquals(1, taskService.createTaskQuery().taskCandidateUser("3").count());
    Task task = taskService.createTaskQuery().taskCandidateUser("1").list().get(0);
    taskService.claim(task.getId(), "1");
    assertEquals(1, taskService.createTaskQuery().taskAssignee("1").count());
    assertEquals(0, taskService.createTaskQuery().taskCandidateUser("1").count());
    assertEquals(0, taskService.createTaskQuery().taskCandidateUser("2").count());
    assertEquals(0, taskService.createTaskQuery().taskCandidateUser("3").count());
  }

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