/// <summary>
/// Removes a request for the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="monitoredItem">The monitored item.</param>
private void Remove(DaItemState item, MonitoredItem monitoredItem)
{
if (monitoredItem.AttributeId == Attributes.Value)
{
SubscribeItemRequest request = FindItemRequest(item.ItemId, false);
if (request != null)
{
request.Remove(monitoredItem);
}
}
else
{
int propertyId = SubscribePropertyRequest.DaItemAttributeToDaProperty(monitoredItem.AttributeId);
if (propertyId < 0)
{
return;
}
SubscribePropertyRequest request = FindPropertyRequest(item.ItemId, false);
if (request != null)
{
request.Remove(m_context, monitoredItem);
if (request.MonitoredItems.Count == 0)
{
m_subscribedProperties.Remove(item.ItemId);
}
}
}
}
/// <summary>
/// Adds a request for the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="monitoredItem">The monitored item.</param>
private void Add(DaItemState item, MonitoredItem monitoredItem)
{
if (monitoredItem.AttributeId == Attributes.Value)
{
SubscribeItemRequest request = FindItemRequest(item.ItemId, true);
if (request != null)
{
request.Add(monitoredItem);
}
}
else
{
int propertyId = SubscribePropertyRequest.DaItemAttributeToDaProperty(monitoredItem.AttributeId);
if (propertyId < 0)
{
return;
}
SubscribePropertyRequest request = FindPropertyRequest(item.ItemId, true);
if (request != null)
{
request.Add(m_context, monitoredItem);
}
}
}
