Opc.Ua.Server.CustomNodeManager2.AddNodeToComponentCache C# (CSharp) Method

        protected NodeState AddNodeToComponentCache(ISystemContext context, NodeHandle handle, NodeState node)
        {
            lock (Lock)
            {
                if (handle == null)
                {
                    return node;
                }

                if (m_componentCache == null)
                {
                    m_componentCache = new Dictionary<NodeId, CacheEntry>();
                }

                // check if a component is actually specified.
                if (!String.IsNullOrEmpty(handle.ComponentPath))
                {
                    CacheEntry entry = null;

                    if (m_componentCache.TryGetValue(handle.RootId, out entry))
                    {
                        entry.RefCount++;

                        if (!String.IsNullOrEmpty(handle.ComponentPath))
                        {
                            return entry.Entry.FindChildBySymbolicName(context, handle.ComponentPath);
                        }

                        return entry.Entry;
                    }

                    NodeState root = node.GetHierarchyRoot();

                    if (root != null)
                    {
                        entry = new CacheEntry();
                        entry.RefCount = 1;
                        entry.Entry = root;
                        m_componentCache.Add(handle.RootId, entry);
                    }
                }

                // simply add the node to the cache.
                else
                {
                    CacheEntry entry = null;

                    if (m_componentCache.TryGetValue(handle.NodeId, out entry))
                    {
                        entry.RefCount++;
                        return entry.Entry;
                    }

                    entry = new CacheEntry();
                    entry.RefCount = 1;
                    entry.Entry = node;
                    m_componentCache.Add(handle.NodeId, entry);
                }

                return node;
            }
        }
        #endregion