Reference

OpcNodeManager Class

abstract

Namespace

Opc.UaFx.Server

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcNodeManager Members

Provides an abstract base class used to organize and maintain the address space or only a part of it. This includes the definition of the nodes in the address space as well as the processing of different node operations to interact with the underlying system.

Syntax

public abstract class OpcNodeManager

Public MustInherit Class OpcNodeManager

Inheritance

Object → OpcNodeManager

Implements

• IDisposable
• IOpcNamespaceResolver

Derived types

• OpcNodeSetManager

Constructors

Name	Description
OpcNodeManagerprotected · 3 overloads	Initializes a new instance of the OpcNodeManager class using the defaultNamespace and additionally specified namespaces.

Properties

Name	Description
DefaultNamespace	Gets the default namespace of the node manager.
DefaultNamespaceIndex	Gets the index of the default namespace of the node manager.
DefaultNamespaceUri	Gets the URI of the default namespace of the node manager.
DefaultNamespaceValuesince v2.8	Gets the textual value of the default namespace of the node manager.
Namespacessince v2.8	Gets the namespaces maintained by the node manager.
NodeIdFactoryprotected · virtual	Gets or sets the OpcNodeIdFactory instance used by this node manager to determine / create node identifiers for the nodes provided / defined by the node manager.
Nodes	Gets the nodes of the node manager.
NodeSetImportOptionsprotected · virtual · since v2.50	Gets or sets the options to use to import the node sets provided by ImportNodes.
NotifierNodes	Gets the nodes of the node manager which act as notifiers (event sources) of the 'Server' node.
SyncRootprotected	Gets the object the node manager locks while it notifies monitored items about changes of its nodes and while it creates, modifies or deletes monitored items, browses, translates browse paths or accesses the history of its nodes.
SystemContextprotected	Gets the context which the node manager uses to access its nodes.
UseAsyncMethodCallsprotected · virtual · since v2.24	Gets a value indicating whether every call to a OpcMethodNode defined by the current OpcNodeManager is to be processed asynchronously using one worker thread per method call.

Methods

Name	Description
AddNode8 overloads	Adds the node specified to the address space of the node manager.
AddNotifierNodeprotected	Adds the node to the collection of 'root' notifiers (= event sources) of the 'Server' node.
Browseprotected · virtual · since v2.7	Browses the references of a node of the node manager on behalf of a client.
CreateHistoryprotected · virtual	Creates the history entries of the values specified for the node specified.
CreateNodesprotected · virtual	When overridden in a derived class, creates the nodes of the address space part maintained by the node manager.
DeleteHistoryprotected · virtual · 3 overloads	Deletes the history entries at the times specified of the node specified.
DeleteNodesprotected · virtual	When overridden in a derived class, releases the nodes of the node manager.
Dispose2 overloads	Releases all resources used by the OpcNodeManager.
ExportNodes2 overloads	Exports the Nodes of the node manager using the Default options.
GetNode2 overloads · since v2.15	Retrieves the IOpcNode which is maintained by the Nodes of this OpcNodeManager and is known under the nodePath specified.
ImplementNodeprotected · virtual · since v2.9	When implemented in a derived class, implements the logic required to integrate the node into the underlying system.
ImportNodesprotected · virtual · since v2.9	When implemented in a derived class, offers the different OpcNodeSets which are imported prior any other nodes are created within the address space part organized by the current OpcNodeManager.
IsNodeAccessibleprotected · virtual · since v2.7	Determines whether the node specified is accessible in the context and view specified.
IsNodeReadyToPublishprotected · since v2.50	Determines a value indicating whether any applied node changes are awaiting to be published by at least one monitored item.
OnAfterReadprotected · virtual	Raises the AfterRead event of the OpcNodeManager.
OnAfterWriteprotected · virtual	Raises the AfterWrite event of the OpcNodeManager.
OnBeforeReadprotected · virtual	Raises the BeforeRead event of the OpcNodeManager.
OnBeforeWriteprotected · virtual	Raises the BeforeWrite event of the OpcNodeManager.
OnMonitoredItemCreatedprotected · virtual	Raises the MonitoredItemCreated event of the OpcNodeManager.
OnMonitoredItemDeletedprotected · virtual	Raises the MonitoredItemDeleted event of the OpcNodeManager.
OnMonitoredItemModifiedprotected · virtual	Raises the MonitoredItemModified event of the OpcNodeManager.
OnMonitoredItemsCreatedprotected · virtual · since v2.7	Raises the MonitoredItemsCreated event of the OpcNodeManager.
OnMonitoredItemsDeletedprotected · virtual · since v2.7	Raises the MonitoredItemsDeleted event of the OpcNodeManager.
OnMonitoredItemsModifiedprotected · virtual · since v2.7	Raises the MonitoredItemsModified event of the OpcNodeManager.
QueryNodeprotected · virtual	When overridden in a derived class, provides the node with the nodeId specified which is not part of the Nodes.
Readprotected · virtual	Reads the attribute values requested by the tokens specified on behalf of a client.
ReadEventHistoryprotected · virtual · since v2.54	Reads the history of the events of the node specified on behalf of a client.
ReadHistoryprotected · virtual · since v2.51	Reads the history of the values of the node specified on behalf of a client.
RemoveNode4 overloads	Removes the node specified from the address space of the node manager.
RemoveNotifierNodeprotected	Removes the node from the collection of 'root' notifiers (= event sources) of the 'Server' node.
ReplaceHistoryprotected · virtual	Replaces the history entries of the values specified of the node specified.
ReplaceNodeprotected · since v2.9	Replaces an existing IOpcNode instance with the specified node without invalidating existing monitored items nor previously defined notifiers.
ReportEvent7 overloads	Produces a global event using the eventNode specified.
RetrieveEventHistoryProviderprotected · virtual · since v2.54	Retrieves the provider which provides the history of the events of the node specified.
RetrieveNodeHistoryProviderprotected · virtual	Retrieves the provider which provides the history of the values of the node specified.
UpdateHistoryprotected · virtual	Updates the history entries of the values specified of the node specified.
Writeprotected · virtual	Writes the attribute values provided by the tokens specified on behalf of a client.

Events

Name	Description
AfterRead	Occurs after the node manager has read attribute values of its nodes on behalf of a client (see Read), also if reading has failed.
AfterWrite	Occurs after the node manager has written attribute values of its nodes on behalf of a client (see Write), also if writing has failed.
BeforeRead	Occurs before the node manager reads attribute values of its nodes on behalf of a client (see Read).
BeforeWrite	Occurs before the node manager writes attribute values of its nodes on behalf of a client (see Write).
MonitoredItemCreated	Occurs when a new monitored item is created through a OpcSession.
MonitoredItemDeleted	Occurs when an existing monitored item of a OpcSession has been deleted.
MonitoredItemModified	Occurs when an existing monitored item of a OpcSession has been modified.
MonitoredItemsCreatedsince v2.7	Occurs when a set of new monitored items is created through a OpcSession.
MonitoredItemsDeletedsince v2.7	Occurs when a set of existing monitored items of a OpcSession has been deleted.
MonitoredItemsModifiedsince v2.7	Occurs when a set of existing monitored items of a OpcSession has been modified.

Applies to

Package	Versions
Opc.UaFx.Advanced	v2.5–v2.59