/// <summary>
/// 读取节点的上一步节点信息
/// </summary>
/// <param name="runningNode">当前节点</param>
/// <param name="isLookUpBackSource">是否退回</param>
/// <param name="hasPassedGatewayNode">是否经由路由节点</param>
/// <returns>活动实例列表</returns>
internal IList <ActivityInstanceEntity> GetPreviousActivityInstanceList(ActivityInstanceEntity runningNode,
bool isLookUpBackSource,
out bool hasPassedGatewayNode)
{
hasPassedGatewayNode = false;
var tim = new TransitionInstanceManager();
var transitionList = tim.GetTransitionInstanceList(runningNode.AppInstanceID,
runningNode.ProcessGUID,
runningNode.ProcessInstanceID).ToList();
var backSrcActivityInstanceId = 0;
if (isLookUpBackSource == true)
{
//退回情况下的处理
if (runningNode.MIHostActivityInstanceID != null && runningNode.CompleteOrder.Value == 1)
{
//多实例的第一个子节点，先找到主节点，再到transition记录表中找到上一步节点
backSrcActivityInstanceId = runningNode.MIHostActivityInstanceID.Value;
}
else if (runningNode.BackSrcActivityInstanceID != null)
{
//节点时曾经发生退回的节点
backSrcActivityInstanceId = runningNode.BackSrcActivityInstanceID.Value;
}
else
{
backSrcActivityInstanceId = runningNode.ID;
}
}
else
{
backSrcActivityInstanceId = runningNode.ID;
}
var aim = new ActivityInstanceManager();
var runningTransitionList = transitionList
.Where(o => o.ToActivityInstanceID == backSrcActivityInstanceId)
.ToList();
IList <ActivityInstanceEntity> previousActivityInstanceList = new List <ActivityInstanceEntity>();
foreach (var entity in runningTransitionList)
{
//如果是逻辑节点，则继续查找
if (entity.FromActivityType == (short)ActivityTypeEnum.GatewayNode)
{
GetPreviousOfGatewayActivityInstance(transitionList, entity.FromActivityInstanceID, previousActivityInstanceList);
hasPassedGatewayNode = true;
}
else
{
previousActivityInstanceList.Add(aim.GetById(entity.FromActivityInstanceID));
}
}
return(previousActivityInstanceList);
}
/// <summary>
/// 获取转移实例记录
/// </summary>
/// <param name="query">查询实体</param>
/// <returns>转移列表</returns>
public IList <TransitionImage> GetTransitionInstanceList(TransitionInstanceQuery query)
{
IList <TransitionImage> imageList = new List <TransitionImage>();
var tm = new TransitionInstanceManager();
var list = tm.GetTransitionInstanceList(query.AppInstanceID, query.ProcessGUID).ToList();
foreach (TransitionInstanceEntity t in list)
{
imageList.Add(new TransitionImage
{
ID = t.ID,
TransitionGUID = t.TransitionGUID
});
}
return(imageList);
}
