shark介面1分析（二）–suspend流程

 

Shark流程掛起過程

1)      得到執行管理器介面

ExecutionAdministration ea= Shark.getInstance().getAdminInterface()..getExecutionAdministration();

2)    串連工作流程伺服器

    ea.connect(username, password, enginename, scope);

3) 用流程執行個體號擷取流程

   WfProcess wfp = ea.getProcess(processInsKey);

4) 掛起流程

   wfp.suspend();

    下面是掛起操作的具體分析

    //狀態不能是已經掛起

   if (state(t).equals(SharkConstants.STATE_OPEN_NOT_RUNNING_SUSPENDED)) {

         throw new AlreadySuspended("The process is already suspended");

      }

    //運行中的流程才能掛起

      if (state(t).startsWith(SharkConstants.STATEPREFIX_OPEN_NOT_RUNNING)) {

         throw new NotRunning("The process is not in the running state");

      }

      try {

    //改變狀態

         change_state(t,SharkConstants.STATE_OPEN_NOT_RUNNING_SUSPENDED);

 

         Iterator it=getActiveActivities(t).iterator();

         while (it.hasNext()) {

            WfActivityInternal act=(WfActivityInternal)it.next();

    //對每個活動都做同樣的操作

            if (act.state(t).startsWith(SharkConstants.STATEPREFIX_OPEN)) {

               act.suspend(t);

            }

         }

      }

5) 中斷連線

   ea.disconnect();