Activiti實作流程執行個體的挂起與激活

**
 *  全部流程執行個體挂起與激活
 *
 *
 */
public class SuspendProcessInstance {
    public static void main(String[] args) {
        //1.得到ProcessEngine對象
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

        //2.得到RepositoryService
        RepositoryService repositoryService = processEngine.getRepositoryService();

        //3.查詢流程定義的對象
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .processDefinitionKey("holiday").singleResult();

        //4.得到目前流程定義的執行個體是否都為暫停狀态
        boolean suspended = processDefinition.isSuspended();

        String processDefinitionId = processDefinition.getId();
        //5.判斷
        if(suspended){
            //說明是暫停，就可以激活操作
            repositoryService.activateProcessDefinitionById(processDefinitionId,true
            ,null);
            System.out.println("流程定義："+processDefinitionId+"激活");
        }else{
            repositoryService.suspendProcessDefinitionById(processDefinitionId,true,null);
            System.out.println("流程定義："+processDefinitionId+"挂起");
        }

    }
}

           

/**
 *  單個流程執行個體挂起與激活
 *
 *
 */
public class SuspendProcessInstance2 {

    /*public static void main(String[] args) {
        //1.得到ProcessEngine對象
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

        //2.得到RuntimeService
        RuntimeService runtimeService = processEngine.getRuntimeService();

        //3.查詢流程執行個體對象
        ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                .processInstanceId("2501").singleResult();

        //4.得到目前流程定義的執行個體是否都為暫停狀态
        boolean suspended = processInstance.isSuspended();

        String processInstanceId = processInstance.getId();
        //5.判斷
        if(suspended){
            //說明是暫停，就可以激活操作
            runtimeService.activateProcessInstanceById(processInstanceId);
            System.out.println("流程："+processInstanceId+"激活");
        }else{
            runtimeService.suspendProcessInstanceById(processInstanceId);
            System.out.println("流程："+processInstanceId+"挂起");
        }

    }
*/

    /**
     * 當流程執行個體2501,已經處于挂起狀态，如果此時要讓該執行個體繼續執行，問題是:是否可以成功？
     * 如果不能執行，是否會抛出異常？ActivitiException： Cannot complete a suspended task
     *
     *
     * @param args
     */
    public static void main(String[] args) {
        //1.得到ProcessEngine對象
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

        //2.得到TaskService對象
        TaskService taskService = processEngine.getTaskService();

        //3.查詢目前使用者的任務
        Task task = taskService.createTaskQuery()
                .processDefinitionKey("holiday")
                .taskAssignee("zhangsan")
                .singleResult();

        //4.處理任務,結合目前使用者任務清單的查詢操作的話,任務ID:task.getId()
        taskService.complete(task.getId());

        //5.輸出任務的id
        System.out.println(task.getId());
    }
}