VariableHandle Class Reference

Base class for the variable handle used in data access methods. More...

#include <variablehandle.h>

Inherits ReferenceCounter.

Inherited by VariableHandleUaNode.

Public Types
enum	ServiceType { ServiceRead, ServiceWrite, ServiceMonitoring, ServiceRegister }
	This enumeration indicates the type of action this variable handle is used for. More...

Public Member Functions
	VariableHandle ()
	construction
virtual const NodeAccessInfo *	getAccessInfo () const
	Returns the NodeAccessInfo for the Node related to the VariableHandle Returns Null if the NodeAccessInfo is not available or the derived class does not have acess to the NodeAccessInfo. More...
virtual UaStatus	setAccessInfo (NodeAccessInfo *pNodeAccessInfo)
	Sets the NodeAccessInfo of the Node related to the VariableHandle Returns a bad status if the NodeAccessInfo cannot be stored in the derived class. More...
Public Member Functions inherited from ReferenceCounter
	ReferenceCounter ()
	construction
virtual	~ReferenceCounter ()
	destruction

Public Attributes
IOManager *	m_pIOManager
	Interface pointer of the responsible IOManager for the node.
OpcUa_Int32	m_AttributeID
	Requested attribute for the action.

Protected Member Functions
virtual	~VariableHandle ()
	destruction

Detailed Description

Base class for the variable handle used in data access methods.

The content of this class is used by the server SDK to multiplex access to node attributes to 1 to N IOManagers per NodeManager. Therefore this class contains the interface pointer of the responsible IOManager for the node and the attribute id. NodeManagers can use derived classes to add more information for the responsible IOManager. The class is derived from ReferenceCounter to control the life time of the object through reference counting.

Member Function Documentation

const NodeAccessInfo * VariableHandle::getAccessInfo ( ) const

virtual

Returns the NodeAccessInfo for the Node related to the VariableHandle Returns Null if the NodeAccessInfo is not available or the derived class does not have acess to the NodeAccessInfo.

The default implementation returns always Null.

Reimplemented in VariableHandleUaNode.

UaStatus VariableHandle::setAccessInfo ( NodeAccessInfo *  pNodeAccessInfo )

virtual

Sets the NodeAccessInfo of the Node related to the VariableHandle Returns a bad status if the NodeAccessInfo cannot be stored in the derived class.

The default implementation returns bad status.

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The documentation for this class was generated from the following files:

• D:/work/uasdkcpp/src/uaserver/uaservercpp/coremodule/variablehandle.h
• D:/work/uasdkcpp/src/uaserver/uaservercpp/coremodule/variablehandle.cpp