/// <summary>
/// 获取下一步节点列表，伴随运行时条件信息
/// </summary>
/// <param name="currentActivity"></param>
/// <param name="conditionKeyValuePair"></param>
/// <returns></returns>
internal NextActivityMatchedResult GetNextActivityList(string currentActivityGUID,
IDictionary <string, string> conditionKeyValuePair = null)
{
try
{
NextActivityMatchedResult result = null;
NextActivityMatchedType resultType = NextActivityMatchedType.Unknown;
//创建“下一步节点”的根节点
NextActivityComponent root = NextActivityComponentFactory.CreateNextActivityComponent();
NextActivityComponent child = null;
List <TransitionEntity> transitionList = GetForwardTransitionList(currentActivityGUID,
conditionKeyValuePair).ToList();
if (transitionList.Count > 0)
{
//遍历连线，获取下一步节点的列表
foreach (TransitionEntity transition in transitionList)
{
if (transition.ToActivity.ActivityType == ActivityTypeEnum.EndNode ||
transition.ToActivity.ActivityType == ActivityTypeEnum.TaskNode ||
transition.ToActivity.ActivityType == ActivityTypeEnum.SubProcessNode)
{
child = NextActivityComponentFactory.CreateNextActivityComponent(transition, transition.ToActivity);
}
else if (transition.ToActivity.ActivityType == ActivityTypeEnum.GatewayNode)
{
NextActivityScheduleBase activitySchedule = NextActivityScheduleFactory.CreateActivitySchedule(this,
transition.ToActivity.GatewaySplitJoinType);
child = activitySchedule.GetNextActivityListFromGateway(transition,
transition.ToActivity,
conditionKeyValuePair,
out resultType);
}
else
{
throw new XmlDefinitionException(string.Format("未知的节点类型：{0}", transition.ToActivity.ActivityType.ToString()));
}
if (child != null)
{
root.Add(child);
resultType = NextActivityMatchedType.Successed;
}
}
}
else
{
resultType = NextActivityMatchedType.NoneTransitionFilteredByCondition;
}
result = NextActivityMatchedResult.CreateNextActivityMatchedResultObject(resultType, root);
return(result);
}
catch (System.Exception e)
{
throw new WfXpdlException(string.Format("解析流程定义文件发生异常，异常描述：{0}", e.Message), e);
}
}
/// <summary>
/// 添加子节点到网关节点
/// </summary>
/// <param name="newRoot"></param>
/// <param name="root"></param>
/// <param name="child"></param>
/// <returns></returns>
private NextActivityComponent AddChildToNewGatewayComponent(NextActivityComponent newRoot,
NextActivityComponent root,
NextActivityComponent child)
{
if ((newRoot == null) && (child != null))
{
newRoot = NextActivityComponentFactory.CreateNextActivityComponent(root);
}
if ((newRoot != null) && (child != null))
{
newRoot.Add(child);
}
return(newRoot);
}
/// <summary>
/// 把子节点添加到网关路由节点，根据网关节点和子节点是否为空处理
/// </summary>
/// <param name="fromTransition">起始转移</param>
/// <param name="currentGatewayActivity">当前网关节点</param>
/// <param name="gatewayComponent">网关Component</param>
/// <param name="child">子节点</param>
/// <returns>下一步Component</returns>
protected NextActivityComponent AddChildToGatewayComponent(TransitionEntity fromTransition,
ActivityEntity currentGatewayActivity,
NextActivityComponent gatewayComponent,
NextActivityComponent child)
{
if ((gatewayComponent == null) && (child != null))
{
gatewayComponent = NextActivityComponentFactory.CreateNextActivityComponent(fromTransition, currentGatewayActivity);
}
if ((gatewayComponent != null) && (child != null))
{
gatewayComponent.Add(child);
}
return(gatewayComponent);
}
/// <summary>
/// 获取下一步节点列表（伴随条件和资源）
/// </summary>
/// <param name="currentActivity"></param>
/// <param name="conditionKeyValuePair"></param>
/// <returns></returns>
internal NextActivityMatchedResult GetNextActivityList(string currentActivityGUID,
IDictionary <string, string> conditionKeyValuePair,
ActivityResource activityResource,
Expression <Func <ActivityResource, ActivityEntity, bool> > expression)
{
NextActivityComponent newRoot = NextActivityComponentFactory.CreateNextActivityComponent();
//先获取未加运行时表达式过滤的下一步节点列表
NextActivityMatchedResult result = GetNextActivityList(currentActivityGUID,
conditionKeyValuePair);
foreach (NextActivityComponent c in result.Root)
{
if (c.HasChildren)
{
NextActivityComponent child = GetNextActivityListByExpressionRecurisivly(c, activityResource, expression);
if (child != null)
{
newRoot.Add(child);
}
}
else
{
if (expression.Compile().Invoke(activityResource, c.Activity))///TODO
{
newRoot.Add(c);
}
}
}
NextActivityMatchedResult newResult = null;
if (newRoot.HasChildren)
{
newResult = NextActivityMatchedResult.CreateNextActivityMatchedResultObject(result.MatchedType, newRoot);
}
else
{
newResult = NextActivityMatchedResult.CreateNextActivityMatchedResultObject(NextActivityMatchedType.NoneTransitionFilteredByCondition,
newRoot);
}
return(newResult);
}