/// <summary> /// Updates the specified context. /// </summary> /// <param name="context">The context.</param> /// <param name="decoder">The decoder.</param> /// <param name="attibutesToLoad">The attributes to load.</param> public override void Update(ISystemContext context, BinaryDecoder decoder, AttributesToSave attibutesToLoad) { base.Update(context, decoder, attibutesToLoad); if ((attibutesToLoad & AttributesToSave.Value) != 0) { WrappedValue = decoder.ReadVariant(null); } if ((attibutesToLoad & AttributesToSave.DataType) != 0) { m_dataType = decoder.ReadNodeId(null); } if ((attibutesToLoad & AttributesToSave.ValueRank) != 0) { m_valueRank = decoder.ReadInt32(null); } if ((attibutesToLoad & AttributesToSave.ArrayDimensions) != 0) { UInt32Collection arrayDimensions = decoder.ReadUInt32Array(null); if (arrayDimensions != null && arrayDimensions.Count > 0) { m_arrayDimensions = new ReadOnlyList<uint>(arrayDimensions); } else { m_arrayDimensions = null; } } }
/// <summary> /// Acknowledges the specified context. /// </summary> /// <param name="context">The context.</param> /// <param name="eventId">The event id.</param> /// <param name="comment">The comment.</param> /// <returns></returns> public uint Acknowledge( ServerSystemContext context, byte[] eventId, LocalizedText comment) { // get the user name from the context. string userName = String.Empty; if (context.UserIdentity != null) { userName = context.UserIdentity.DisplayName; } // get the comment. string commentText = String.Empty; if (comment != null) { commentText = comment.Text; } System.Runtime.InteropServices.ComTypes.FILETIME ftActiveTime; // unpack the event id. ServiceMessageContext messageContext = new ServiceMessageContext(); messageContext.NamespaceUris = context.NamespaceUris; messageContext.ServerUris = context.ServerUris; messageContext.Factory = context.EncodeableFactory; BinaryDecoder decoder = new BinaryDecoder(eventId, messageContext); string source = decoder.ReadString(null); string conditionName = decoder.ReadString(null); ftActiveTime.dwHighDateTime = decoder.ReadInt32(null); ftActiveTime.dwLowDateTime = decoder.ReadInt32(null); int cookie = decoder.ReadInt32(null); decoder.Close(); string methodName = "IOPCEventServer.AckCondition"; IntPtr pErrors = IntPtr.Zero; try { IOPCEventServer server = BeginComCall<IOPCEventServer>(methodName, true); server.AckCondition( 1, userName, commentText, new string[] { source }, new string[] { conditionName }, new System.Runtime.InteropServices.ComTypes.FILETIME[] { ftActiveTime }, new int[] { cookie }, out pErrors); } catch (Exception e) { ComCallError(methodName, e); return StatusCodes.BadUnexpectedError; } finally { EndComCall(methodName); } // unmarshal results. int[] errors = ComUtils.GetInt32s(ref pErrors, 1, true); if (errors[0] == ResultIds.S_ALREADYACKED) { return StatusCodes.BadConditionBranchAlreadyAcked; } else if (errors[0] < 0) { return StatusCodes.BadEventIdUnknown; } return StatusCodes.Good; }