private static string[] GetDownstreamLinks(Configuration_RoadwayLinkInformation linkId, double maxDistance)
{
List <string> results = new List <string>();
results.Add(linkId.RoadwayLinkIdentifier);
if (linkId.DownstreamRoadwayLinkIdentifier != null)
{
Configuration_RoadwayLinkInformation nextLink = srInfloDbContext.Configuration_RoadwayLinkInformation
.Find(linkId.DownstreamRoadwayLinkIdentifier);
if (nextLink != null)
{
maxDistance -= Math.Abs(linkId.EndMileMarker - nextLink.EndMileMarker);
if (maxDistance > 0)
{
results.AddRange(GetDownstreamLinks(nextLink, maxDistance));
}
}
}
return(results.ToArray());
}
private static bool LoadApplicableAlerts(string linkId, out TMEOutput_Recommended_QWARN_CVMessage[] qWarnAlerts)
{
Configuration_RoadwayLinkInformation currentLink = srInfloDbContext.Configuration_RoadwayLinkInformation
.Find(linkId);
if (false && currentLink != null)
{
IEnumerable <string> downstreamLinks = GetDownstreamLinks(currentLink, AlertSearchDistance);
//Select the latest alert for each roadwayLink.
qWarnAlerts = downstreamLinks.Select(x =>
srInfloDbContext.TMEOutput_Recommended_QWARN_CVMessage
.Where(q => q.RoadwayLinkID.Equals(x))
.OrderByDescending(q => q.Timestamp)
.FirstOrDefault())
.Where(q => q != null).ToArray();
return(true);
}
qWarnAlerts = new TMEOutput_Recommended_QWARN_CVMessage[0];
return(false);
}
