private IEnumerable <TheThing> GetMatchingThings(Subscription subscription)
{
var things = new List <TheThing>();
if (_thingReference.ThingMID.HasValue && _thingReference.ThingMID != Guid.Empty)
{
var thing = TheThingRegistry.GetThingByMID(_thingReference.ThingMID.Value, true);
if (thing != null)
{
things.Add(thing);
}
return(things);
}
IBaseEngine baseEngine = null;
List <TheThing> matchingThings = null;
if (!string.IsNullOrEmpty(_thingReference.EngineName))
{
baseEngine = TheThingRegistry.GetBaseEngine(_thingReference.EngineName);
if (baseEngine == null)
{
TheCDEngines.RegisterNewMiniRelay(_thingReference.EngineName);
baseEngine = TheThingRegistry.GetBaseEngine(_thingReference.EngineName);
}
if (baseEngine != null)
{
subscription?.AddSubscription(baseEngine, this);
matchingThings = TheThingRegistry.GetThingsOfEngine(_thingReference.EngineName, true, true);
}
}
else
{
object deviceTypeObj = null;
if (_thingReference.PropertiesToMatch?.TryGetValue("DeviceType", out deviceTypeObj) == true)
{
var deviceType = TheCommonUtils.CStr(deviceTypeObj);
if (!string.IsNullOrEmpty(deviceType))
{
matchingThings = TheThingRegistry.GetThingsByFunc("*", t => t.DeviceType.Equals(deviceType, StringComparison.Ordinal), true);
}
}
}
if (matchingThings != null)
{
foreach (var thing in matchingThings)
{
if (Matches(thing))
{
if (baseEngine == null)
{
subscription?.AddSubscription(thing.GetBaseEngine(), this);
}
things.Add(thing);
}
}
}
return(things);
}
