C# Class Quickstarts.DataAccessServer.DataAccessServerNodeManager

A node manager for a server that exposes several variables.

Inheritance: QuickstartNodeManager

Mostrar archivo Open project: OPCFoundation/UA-.NET Class Usage Examples

Public Methods

Method	Description
CreateAddressSpace ( IDictionary externalReferences ) : void	Does any initialization required before the address space can be used. The externalReferences is an out parameter that allows the node manager to link to nodes in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and should have a reference to the root folder node(s) exposed by this node manager.
DataAccessServerNodeManager ( IServerInternal server, ApplicationConfiguration configuration ) : System	Initializes the node manager.
DeleteAddressSpace ( ) : void	Frees any resources allocated for the address space.
New ( ISystemContext context, NodeState node ) : Opc.Ua.NodeId	Creates the NodeId for the specified node. This method is called by the NodeState.Create() method which initializes a Node from the type model. During initialization a number of child nodes are created and need to have NodeIds assigned to them. This implementation constructs NodeIds by constructing strings. Other implementations could assign unique integers or Guids and save the new Node in a dictionary for later lookup.

Protected Methods

Method	Description
Dispose ( bool disposing ) : void	An overrideable version of the Dispose.
GetManagerHandle ( ServerSystemContext context, Opc.Ua.NodeId nodeId, NodeState>.IDictionary cache ) : NodeHandle	Returns a unique handle for the node.
OnMonitoredItemCreated ( ServerSystemContext context, NodeHandle handle, MonitoredItem monitoredItem ) : void	Called after creating a MonitoredItem.
OnMonitoredItemDeleted ( ServerSystemContext context, NodeHandle handle, MonitoredItem monitoredItem ) : void	Called after deleting a MonitoredItem.
ValidateNode ( ServerSystemContext context, NodeHandle handle, NodeState>.IDictionary cache ) : NodeState	Verifies that the specified node exists.

Method Details

CreateAddressSpace() public method

Does any initialization required before the address space can be used.

The externalReferences is an out parameter that allows the node manager to link to nodes in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and should have a reference to the root folder node(s) exposed by this node manager.

public CreateAddressSpace ( IDictionary externalReferences ) : void
externalReferences	IDictionary
return	void

DataAccessServerNodeManager() public method

Initializes the node manager.

public DataAccessServerNodeManager ( IServerInternal server, ApplicationConfiguration configuration ) : System
server	IServerInternal
configuration	ApplicationConfiguration
return	System

DeleteAddressSpace() public method

Frees any resources allocated for the address space.

public DeleteAddressSpace ( ) : void
return	void

Dispose() protected method

An overrideable version of the Dispose.

protected Dispose ( bool disposing ) : void
disposing	bool
return	void

GetManagerHandle() protected method

Returns a unique handle for the node.

protected GetManagerHandle ( ServerSystemContext context, Opc.Ua.NodeId nodeId, NodeState>.IDictionary cache ) : NodeHandle
context	Opc.Ua.Server.ServerSystemContext
nodeId	Opc.Ua.NodeId
cache	NodeState>.IDictionary
return	Opc.Ua.Server.NodeHandle

New() public method

Creates the NodeId for the specified node.

This method is called by the NodeState.Create() method which initializes a Node from the type model. During initialization a number of child nodes are created and need to have NodeIds assigned to them. This implementation constructs NodeIds by constructing strings. Other implementations could assign unique integers or Guids and save the new Node in a dictionary for later lookup.

public New ( ISystemContext context, NodeState node ) : Opc.Ua.NodeId
context	ISystemContext	The context.
node	NodeState	The node.
return	Opc.Ua.NodeId

OnMonitoredItemCreated() protected method

Called after creating a MonitoredItem.

protected OnMonitoredItemCreated ( ServerSystemContext context, NodeHandle handle, MonitoredItem monitoredItem ) : void
context	Opc.Ua.Server.ServerSystemContext	The context.
handle	Opc.Ua.Server.NodeHandle	The handle for the node.
monitoredItem	Opc.Ua.Server.MonitoredItem	The monitored item.
return	void

OnMonitoredItemDeleted() protected method

Called after deleting a MonitoredItem.

protected OnMonitoredItemDeleted ( ServerSystemContext context, NodeHandle handle, MonitoredItem monitoredItem ) : void
context	Opc.Ua.Server.ServerSystemContext	The context.
handle	Opc.Ua.Server.NodeHandle	The handle for the node.
monitoredItem	Opc.Ua.Server.MonitoredItem	The monitored item.
return	void

ValidateNode() protected method

Verifies that the specified node exists.

protected ValidateNode ( ServerSystemContext context, NodeHandle handle, NodeState>.IDictionary cache ) : NodeState
context	Opc.Ua.Server.ServerSystemContext
handle	Opc.Ua.Server.NodeHandle
cache	NodeState>.IDictionary
return	NodeState