/// <summary>
/// Removes an link (but not the item) from the address space only if it has no children.
/// </summary>
private bool RemoveEmptyLink(string browsePath)
{
lock (this)
{
// validate browse path.
if (browsePath == null || browsePath.Length == 0)
{
return(false);
}
// create the browse element.
BrowseElement element = m_addressSpace.Find(browsePath);
if (element != null)
{
if (element.Count == 0)
{
element.Remove();
return(true);
}
}
return(false);
}
}
// /// <summary>
// /// Adds an link with an item id to the address space.
// /// </summary>
// private bool AddItemAndLink(string browsePath, string itemID, IDevice device)
// {
// lock (this)
// {
// // validate browse path.
// if (browsePath == null || browsePath.Length == 0)
// {
// return false;
// }
//
// // check if item does not exists.
// //MPTD removed ! check it
// if (m_items.Contains(itemID))
// {
// return false;
// }
//
// // create the browse element.
// BrowseElement element = m_addressSpace.Insert(browsePath, itemID);
//
// if (element == null)
// {
// return false;
// }
//
// // create new item and index by item id.
// m_items[element.ItemID] = new CacheItem(itemID, device);
// return true;
// }
// }
/// <summary>
/// Removes an link and an item with the same id to the address space.
/// </summary>
private bool RemoveItemAndLink(string browsePath)
{
lock (this)
{
// validate browse path.
if (browsePath == null || browsePath.Length == 0)
{
return(false);
}
// find the browse element.
BrowseElement element = m_addressSpace.Find(browsePath);
if (element != null)
{
// remove item.
m_items.Remove(element.ItemID);
// remove element.
element.Remove();
}
return(true);
}
}
