/// <summary>
        /// 获取当前节点的下一个节点信息
        /// </summary>
        /// <param name="processId"></param>
        /// <param name="nodeId"></param>
        /// <returns></returns>
        public ActivityEntity GetNextActivity(string processId,
                                              string nodeId, string billUid)
        {
            _processModel = new ProcessModel(_dataAccessor, _loggerFactory, processId, billUid);
            var nextActivity = _processModel.GetNextActivity(nodeId);

            return(nextActivity);
        }
        /// <summary>
        /// 获取当前节点的下一个节点信息
        /// </summary>
        /// <param name="processId"></param>
        /// <param name="nodeId"></param>
        /// <returns></returns>
        public ActivityEntity GetNextActivity(string processId,
                                              string nodeId, string billUid)
        {
            _processModel = new ProcessModel(_serviceProvider, processId, billUid);
            var nextActivity = _processModel.GetNextActivity(nodeId);

            return(nextActivity);
        }
        /// <summary>
        /// 获取预选步骤人员列表
        /// </summary>
        /// <param name="runner">当前运行用户</param>
        /// <returns>步骤预选人员列表</returns>
        private IDictionary <string, PerformerList> GetNextActivityPerformersPriliminary(WfAppRunner runner)
        {
            IDictionary <string, PerformerList> nextSteps = null;

            var            tm       = new TaskManager();
            TaskViewEntity taskView = tm.GetTaskOfMine(runner);

            //读取活动实例中记录的步骤预选数据
            var aim = new ActivityInstanceManager();

            if (taskView.MIHostActivityInstanceID != null)
            {
                var mainActivityInstanceID = taskView.MIHostActivityInstanceID.Value;
                var mainActivityInstance   = aim.GetById(mainActivityInstanceID);
                if (mainActivityInstance != null)
                {
                    nextSteps = NextStepUtility.DeserializeNextStepPerformers(mainActivityInstance.NextStepPerformers);
                }
            }

            IProcessModel processModel = ProcessModelFactory.Create(runner.ProcessGUID, runner.Version);
            var           nextActivity = processModel.GetNextActivity(taskView.ActivityGUID);

            if (nextActivity != null)
            {
                if (nextActivity.ActivityType == ActivityTypeEnum.GatewayNode)
                {
                    //获取网关节点信息
                    var gatewayActivityInstance = aim.GetActivityInstanceLatest(taskView.ProcessInstanceID, nextActivity.ActivityGUID);
                    if (gatewayActivityInstance != null &&
                        !string.IsNullOrEmpty(gatewayActivityInstance.NextStepPerformers))
                    {
                        nextSteps = NextStepUtility.DeserializeNextStepPerformers(gatewayActivityInstance.NextStepPerformers);
                    }
                }
                else if (XPDLHelper.IsInterTimerEventComponentNode(nextActivity) == true)
                {
                    //中间Timer事件节点
                    var timerActivityInstance = aim.GetActivityInstanceLatest(taskView.ProcessInstanceID, nextActivity.ActivityGUID);
                    if (timerActivityInstance != null &&
                        !string.IsNullOrEmpty(timerActivityInstance.NextStepPerformers))
                    {
                        nextSteps = NextStepUtility.DeserializeNextStepPerformers(timerActivityInstance.NextStepPerformers);
                    }
                }
            }
            return(nextSteps);
        }
        /// <summary>
        /// 获取预选步骤人员列表
        /// </summary>
        /// <param name="nextActivityTree">下一步活动节点树</param>
        /// <param name="runner">当前运行用户</param>
        /// <returns>步骤预选人员列表</returns>
        private IDictionary <string, PerformerList> GetNextActivityPerformers(IList <NodeView> nextActivityTree,
                                                                              WfAppRunner runner)
        {
            IDictionary <string, PerformerList> nextSteps = null;

            var            tm       = new TaskManager();
            TaskViewEntity taskView = tm.GetTaskOfMine(runner);

            //读取活动实例中记录的步骤预选数据
            var aim = new ActivityInstanceManager();

            if (taskView.MIHostActivityInstanceID != null)
            {
                var mainActivityInstanceID = taskView.MIHostActivityInstanceID.Value;
                var mainActivityInstance   = aim.GetById(mainActivityInstanceID);
                if (mainActivityInstance != null)
                {
                    nextSteps = NextStepUtility.DeserializeNextStepPerformers(mainActivityInstance.NextStepPerformers);
                }
            }

            //获取网关节点信息
            IProcessModel processModel = ProcessModelFactory.Create(runner.ProcessGUID, runner.Version);
            var           nextActivity = processModel.GetNextActivity(taskView.ActivityGUID);

            if (nextActivity.ActivityType == ActivityTypeEnum.GatewayNode)
            {
                var gatewayActivityInstance = aim.GetActivityInstanceLatest(taskView.ProcessInstanceID, nextActivity.ActivityGUID);
                if (gatewayActivityInstance != null &&
                    !string.IsNullOrEmpty(gatewayActivityInstance.NextStepPerformers))
                {
                    nextSteps = NextStepUtility.DeserializeNextStepPerformers(gatewayActivityInstance.NextStepPerformers);
                }
            }
            return(nextSteps);
        }