/// <summary>
/// Override ConditionRefresh.
/// </summary>
public override ServiceResult ConditionRefresh(
OperationContext context,
IList <IEventMonitoredItem> monitoredItems)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
for (int ii = 0; ii < monitoredItems.Count; ii++)
{
// the IEventMonitoredItem should always be MonitoredItems since they are created by the MasterNodeManager.
MonitoredItem monitoredItem = monitoredItems[ii] as MonitoredItem;
if (monitoredItem == null)
{
continue;
}
List <IFilterTarget> events = new List <IFilterTarget>();
List <NodeState> nodesToRefresh = new List <NodeState>();
lock (Lock)
{
// check for server subscription.
if (monitoredItem.NodeId == ObjectIds.Server)
{
if (RootNotifiers != null)
{
nodesToRefresh.AddRange(RootNotifiers);
}
}
else
{
// check for existing monitored node.
MonitoredNode2 monitoredNode = null;
if (!MonitoredNodes.TryGetValue(monitoredItem.NodeId, out monitoredNode))
{
continue;
}
// get the refresh events.
nodesToRefresh.Add(monitoredNode.Node);
}
}
// block and wait for the refresh.
for (int jj = 0; jj < nodesToRefresh.Count; jj++)
{
nodesToRefresh[jj].ConditionRefresh(systemContext, events, true);
}
lock (Lock)
{
// This is where I can add branch events
GetBranchesForConditionRefresh(events);
}
// queue the events.
for (int jj = 0; jj < events.Count; jj++)
{
monitoredItem.QueueEvent(events[jj]);
}
}
// all done.
return(ServiceResult.Good);
}