//
//
// COV subscriptions
//
public void addCovSubscription(Address from, OctetString linkService, UnsignedInteger subscriberProcessIdentifier,
BBoolean issueConfirmedNotifications, UnsignedInteger lifetime)
{
//synchronized (covSubscriptions) {
ObjectCovSubscription sub = findCovSubscription(from, subscriberProcessIdentifier);
bool confirmed = issueConfirmedNotifications.Value;
if (sub == null)
{
// Ensure that this object is valid for COV notifications.
if (!ObjectCovSubscription.SendCovNotification(Id.ObjectType, null, this.getCovIncrement()))
{
throw new BACnetServiceException(ErrorClass.Services, ErrorCode.CovSubscriptionFailed,
"Object is invalid for COV notifications");
}
if (confirmed)
{
// If the peer wants confirmed notifications, it must be in the remote device list.
RemoteDevice d = localDevice.getRemoteDevice(from);
if (d == null)
{
throw new BACnetServiceException(ErrorClass.Services, ErrorCode.CovSubscriptionFailed,
"From address not found in remote device list. Cannot send confirmed notifications");
}
}
sub = new ObjectCovSubscription(from, linkService, subscriberProcessIdentifier, this.getCovIncrement());
covSubscriptions.Add(sub);
}
sub.SetIssueConfirmedNotifications(issueConfirmedNotifications.Value);
sub.SetExpiryTime((int)lifetime.Value);
// }
}
private void setPropertyImpl(PropertyIdentifier pid, Encodable value)
{
Encodable oldValue = (Encodable)properties[pid];
properties[pid] = value;
if (!value.Equals(oldValue))
{
// Check for subscriptions.
if (ObjectCovSubscription.SendCovNotification(Id.ObjectType, pid, this.getCovIncrement()))
{
//synchronized(covSubscriptions) {
long now = System.DateTime.Now.Ticks;
ObjectCovSubscription sub;
for (int i = covSubscriptions.Count - 1; i >= 0; i--)
{
sub = (ObjectCovSubscription)covSubscriptions[i];
if (sub.HasExpired(now))
{
covSubscriptions.RemoveAt(i);
}
else if (sub.IsNotificationRequired(pid, value))
{
sendCovNotification(sub, now);
}
}
//}
}
}
}