/// <summary> /// Initializes a new instance of the <see cref="BlockState"/> class. /// </summary> /// <param name="nodeManager">The context.</param> /// <param name="nodeId">The node id.</param> /// <param name="block">The block.</param> public BlockState( HistoricalAccessServerNodeManager nodeManager, NodeId nodeId, UnderlyingSystemBlock block) : base(null) { m_blockId = block.Id; m_nodeManager = nodeManager; this.SymbolicName = block.Name; this.NodeId = nodeId; this.BrowseName = new QualifiedName(block.Name, nodeId.NamespaceIndex); this.DisplayName = new LocalizedText(block.Name); this.Description = null; this.WriteMask = 0; this.UserWriteMask = 0; this.EventNotifier = EventNotifiers.None; UnderlyingSystem system = nodeManager.SystemContext.SystemHandle as UnderlyingSystem; if (system != null) { IList <UnderlyingSystemTag> tags = block.GetTags(); for (int ii = 0; ii < tags.Count; ii++) { BaseVariableState variable = CreateVariable(nodeManager.SystemContext, tags[ii]); AddChild(variable); variable.OnSimpleWriteValue = OnWriteTagValue; } } }
/// <summary> /// Used to receive notifications when the value attribute is read or written. /// </summary> public ServiceResult OnWriteTagValue( ISystemContext context, NodeState node, ref object value) { UnderlyingSystem system = context.SystemHandle as UnderlyingSystem; if (system == null) { return(StatusCodes.BadCommunicationError); } UnderlyingSystemBlock block = system.FindBlock(m_blockId); if (block == null) { return(StatusCodes.BadNodeIdUnknown); } uint error = block.WriteTagValue(node.SymbolicName, value); if (error != 0) { // the simulator uses UA status codes so there is no need for a mapping table. return(error); } return(ServiceResult.Good); }
/// <summary> /// Initializes a new instance of the <see cref="BlockState"/> class. /// </summary> /// <param name="nodeManager">The context.</param> /// <param name="nodeId">The node id.</param> /// <param name="block">The block.</param> public BlockState( HistoricalAccessServerNodeManager nodeManager, NodeId nodeId, UnderlyingSystemBlock block) : base(null) { m_blockId = block.Id; m_nodeManager = nodeManager; this.SymbolicName = block.Name; this.NodeId = nodeId; this.BrowseName = new QualifiedName(block.Name, nodeId.NamespaceIndex); this.DisplayName = new LocalizedText(block.Name); this.Description = null; this.WriteMask = 0; this.UserWriteMask = 0; this.EventNotifier = EventNotifiers.None; UnderlyingSystem system = nodeManager.SystemContext.SystemHandle as UnderlyingSystem; if (system != null) { IList<UnderlyingSystemTag> tags = block.GetTags(); for (int ii = 0; ii < tags.Count; ii++) { BaseVariableState variable = CreateVariable(nodeManager.SystemContext, tags[ii]); AddChild(variable); variable.OnSimpleWriteValue = OnWriteTagValue; } } }
/// <summary> /// Starts the monitoring the block. /// </summary> /// <param name="context">The context.</param> public void StartMonitoring(ServerSystemContext context) { if (m_monitoringCount == 0) { UnderlyingSystem system = context.SystemHandle as UnderlyingSystem; if (system != null) { UnderlyingSystemBlock block = system.FindBlock(m_blockId); if (block != null) { block.StartMonitoring(OnTagsChanged); } } } m_monitoringCount++; }
/// <summary> /// Stop the monitoring the block. /// </summary> /// <param name="context">The context.</param> public bool StopMonitoring(ServerSystemContext context) { m_monitoringCount--; if (m_monitoringCount == 0) { UnderlyingSystem system = context.SystemHandle as UnderlyingSystem; if (system != null) { UnderlyingSystemBlock block = system.FindBlock(m_blockId); if (block != null) { block.StopMonitoring(); } } } return(m_monitoringCount != 0); }
/// <summary> /// Returns the next child. /// </summary> private IReference NextChild() { UnderlyingSystem system = (UnderlyingSystem)this.SystemContext.SystemHandle; NodeId targetId = null; // check if a specific browse name is requested. if (!QualifiedName.IsNull(base.BrowseName)) { // check if match found previously. if (m_position == Int32.MaxValue) { return(null); } // browse name must be qualified by the correct namespace. if (m_source.BrowseName.NamespaceIndex != base.BrowseName.NamespaceIndex) { return(null); } // look for matching segment. if (m_stage == Stage.Segments && m_segments != null) { for (int ii = 0; ii < m_segments.Count; ii++) { if (base.BrowseName.Name == m_segments[ii].Name) { targetId = ModelUtils.ConstructIdForSegment(m_segments[ii].Id, m_source.NodeId.NamespaceIndex); break; } } } // look for matching block. if (m_stage == Stage.Blocks && m_blocks != null) { for (int ii = 0; ii < m_blocks.Count; ii++) { UnderlyingSystemBlock block = system.FindBlock(m_blocks[ii]); if (block != null && base.BrowseName.Name == block.Name) { targetId = ModelUtils.ConstructIdForBlock(m_blocks[ii], m_source.NodeId.NamespaceIndex); break; } } } m_position = Int32.MaxValue; } // return the child at the next position. else { // look for next segment. if (m_stage == Stage.Segments && m_segments != null) { if (m_position >= m_segments.Count) { return(null); } targetId = ModelUtils.ConstructIdForSegment(m_segments[m_position++].Id, m_source.NodeId.NamespaceIndex); } // look for next block. else if (m_stage == Stage.Blocks && m_blocks != null) { if (m_position >= m_blocks.Count) { return(null); } targetId = ModelUtils.ConstructIdForBlock(m_blocks[m_position++], m_source.NodeId.NamespaceIndex); } } // create reference. if (targetId != null) { return(new NodeStateReference(ReferenceTypeIds.Organizes, false, targetId)); } return(null); }