/// <summary>
/// 根据网关类型获取下一步节点列表的抽象方法
/// </summary>
/// <param name="processInstanceGUID"></param>
/// <param name="transition"></param>
/// <param name="activity"></param>
/// <param name="conditionKeyValuePair"></param>
/// <returns></returns>
internal abstract NextActivityComponent GetNextActivityListFromGateway(TransitionEntity transition,
ActivityEntity activity,
IDictionary <string, string> conditionKeyValuePair,
out NextActivityMatchedType scheduleStatus);
/// <summary>
/// 获取下一步节点列表
/// </summary>
/// <param name="processInstanceGUID"></param>
/// <param name="fromTransition"></param>
/// <param name="currentGatewayActivity"></param>
/// <param name="conditionKeyValuePair"></param>
/// <returns></returns>
internal override NextActivityComponent GetNextActivityListFromGateway(TransitionEntity fromTransition,
ActivityEntity currentGatewayActivity,
IDictionary <string, string> conditionKeyValuePair,
out NextActivityMatchedType resultType)
{
NextActivityComponent child = null;
NextActivityComponent gatewayComponent = null;
resultType = NextActivityMatchedType.Unknown;
var transitionList = this.ProcessModel.GetForwardTransitionList(currentGatewayActivity.ActivityGUID).ToList();
if (currentGatewayActivity.GatewayDirectionType == GatewayDirectionEnum.AndSplit)
{
//判读连线上的条件是否都满足，如果都满足才可以取出后续节点列表
bool isCheckedOk = base.ProcessModel.CheckAndSplitOccurrenceCondition(transitionList, conditionKeyValuePair);
if (isCheckedOk)
{
//获取AndSplit的每一条后续连线上的To节点
foreach (TransitionEntity transition in transitionList)
{
child = GetNextActivityListFromGatewayCore(transition,
conditionKeyValuePair,
out resultType);
gatewayComponent = AddChildToGatewayComponent(fromTransition, currentGatewayActivity, gatewayComponent, child);
}
}
if (gatewayComponent == null)
{
resultType = NextActivityMatchedType.WaitingForSplitting;
}
}
else if (currentGatewayActivity.GatewayDirectionType == GatewayDirectionEnum.OrSplit)
{
//获取OrSplit的，满足条件的后续连线上的To节点
foreach (TransitionEntity transition in transitionList)
{
bool isValidTransition = base.ProcessModel.IsValidTransition(transition, conditionKeyValuePair);
if (isValidTransition)
{
child = GetNextActivityListFromGatewayCore(transition,
conditionKeyValuePair,
out resultType);
gatewayComponent = AddChildToGatewayComponent(fromTransition, currentGatewayActivity, gatewayComponent, child);
}
if (gatewayComponent == null)
{
resultType = NextActivityMatchedType.NoneTransitionMatchedToSplit;
}
}
}
else if (currentGatewayActivity.GatewayDirectionType == GatewayDirectionEnum.XOrSplit)
{
//按连线定义的优先级排序
transitionList.Sort(new TransitionPriorityCompare());
//获取XOrSplit的，第一条满足条件的后续连线上的To节点
foreach (TransitionEntity transition in transitionList)
{
bool isValidTransitionXOr = base.ProcessModel.IsValidTransition(transition, conditionKeyValuePair);
if (isValidTransitionXOr)
{
child = GetNextActivityListFromGatewayCore(transition,
conditionKeyValuePair,
out resultType);
gatewayComponent = AddChildToGatewayComponent(fromTransition, currentGatewayActivity, gatewayComponent, child);
//退出循环
break;
}
}
if (gatewayComponent == null)
{
resultType = NextActivityMatchedType.NoneTransitionMatchedToSplit;
}
}
else if (currentGatewayActivity.GatewayDirectionType == GatewayDirectionEnum.ComplexSplit)
{
resultType = NextActivityMatchedType.Failed;
throw new Exception("ComplexSplit 没有具体实现！");
}
else
{
resultType = NextActivityMatchedType.Failed;
throw new Exception("Split 分支节点的类型不明确！");
}
return(gatewayComponent);
}