/// <summary>
/// 退回操作的处理逻辑
/// </summary>
/// <param name="session">会话</param>
internal override void ExecuteInstanceImp(IDbSession session)
{
var nodeMediatorBackward = new NodeMediatorBackward(base.BackwardContext, session);
var aim = new ActivityInstanceManager();
var backMostPreviouslyActivityInstanceID = GetBackwardMostPreviouslyActivityInstanceID();
//上一步节点是普通节点的退回处理
nodeMediatorBackward.CreateBackwardActivityTaskTransitionInstance(base.BackwardContext.ProcessInstance,
base.BackwardContext.BackwardFromActivityInstance,
BackwardTypeEnum.Sendback,
backMostPreviouslyActivityInstanceID,
base.BackwardContext.BackwardToTargetTransitionGUID,
TransitionTypeEnum.Sendback,
TransitionFlyingTypeEnum.NotFlying,
base.ActivityResource,
session);
//更新当前办理节点的状态（从准备或运行状态更新为退回状态）
aim.SendBack(base.BackwardContext.BackwardFromActivityInstance.ID,
base.ActivityResource.AppRunner,
session);
if (base.BackwardContext.BackwardFromActivityInstance.MIHostActivityInstanceID != null)
{
//更新当前办理节点的主节点状态（从挂起或运行状态更新为退回状态）
aim.SendBack((int)base.BackwardContext.BackwardFromActivityInstance.MIHostActivityInstanceID,
base.ActivityResource.AppRunner,
session);
//更新主节点下未办理完成节点状态为取消状态
aim.CancelUnCompletedMultipleInstance((int)base.BackwardContext.BackwardFromActivityInstance.MIHostActivityInstanceID, base.ActivityResource.AppRunner, session);
}
//构造回调函数需要的数据
WfExecutedResult result = base.WfExecutedResult;
result.BackwardTaskReceiver = base.BackwardContext.BackwardTaskReceiver;
result.ReturnDataContext = nodeMediatorBackward.ReturnDataContext;
result.Status = WfExecutedStatus.Success;
}
