Opc.Ua.Server.MasterNodeManager.Write C# (CSharp) Method

        public virtual void Write(
            OperationContext             context,
            WriteValueCollection         nodesToWrite, 
            out StatusCodeCollection     results, 
            out DiagnosticInfoCollection diagnosticInfos)
        {
            if (context == null)      throw new ArgumentNullException("context");
            if (nodesToWrite == null) throw new ArgumentNullException("nodesToWrite");

            int count = nodesToWrite.Count;

            bool diagnosticsExist = false;
            results = new StatusCodeCollection(count);
            diagnosticInfos = new DiagnosticInfoCollection(count);

            // add placeholder for each result.
            bool validItems = false;

            for (int ii = 0; ii < count; ii++)
            {
                StatusCode result = StatusCodes.Good;
                DiagnosticInfo diagnosticInfo = null;
                
                // pre-validate and pre-parse parameter.
                ServiceResult error = WriteValue.Validate(nodesToWrite[ii]);
                
                // return error status.
                if (ServiceResult.IsBad(error))
                {
                    nodesToWrite[ii].Processed = true;
                    result = error.Code;

                    // add diagnostics if requested.
                    if ((context.DiagnosticsMask & DiagnosticsMasks.OperationAll) != 0)
                    {
                        diagnosticInfo = ServerUtils.CreateDiagnosticInfo(m_server, context, error);
                        diagnosticsExist = true;
                    }
                }

                // found at least one valid item.
                else
                {
                    nodesToWrite[ii].Processed = false;
                    validItems = true;
                }

                results.Add(result);
                diagnosticInfos.Add(diagnosticInfo);
            }

            // call each node manager.
            if (validItems)
            {
                List<ServiceResult> errors = new List<ServiceResult>(count);
                errors.AddRange(new ServiceResult[count]);

                foreach (INodeManager nodeManager in m_nodeManagers)
                {
                    nodeManager.Write(
                        context,
                        nodesToWrite,
                        errors);
                }
                                
                for (int ii = 0; ii < nodesToWrite.Count; ii++)
                {
                    if (!nodesToWrite[ii].Processed)
                    {
                        errors[ii] = StatusCodes.BadNodeIdUnknown;
                    }

                    if (errors[ii] != null && errors[ii].Code != StatusCodes.Good)
                    {
                        results[ii] = errors[ii].Code;
                        
                        // add diagnostics if requested.
                        if ((context.DiagnosticsMask & DiagnosticsMasks.OperationAll) != 0)
                        {
                            diagnosticInfos[ii] = ServerUtils.CreateDiagnosticInfo(m_server, context, errors[ii]);
                            diagnosticsExist = true;
                        }
                    }

                    ServerUtils.ReportWriteValue(nodesToWrite[ii].NodeId, nodesToWrite[ii].Value, results[ii]);
                }
            }

            // clear the diagnostics array if no diagnostics requested or no errors occurred.
            UpdateDiagnostics(context, diagnosticsExist, ref diagnosticInfos);
        }