UserDataVariableGetValue Class Reference

Specialized UserData class for UaVariable where the UserData class provides a capability to get the current value. More...

#include <userdatabase.h>

Inherits UserDataBase.

Inherited by ServerDiagnosticsSummaryUserDataGetCounter, SubscriptionDiagnosticsArrayUserDataGetValue, SubscriptionDiagnosticsUserDataGetValue, UaVariableNs1UserDataGetCounter, UserDataGetCounterBoolean, UserDataGetCounterByte, UserDataGetCounterDouble, UserDataGetCounterNodeId, UserDataGetCounterUInt32, and UserDataServerStatus.

Public Member Functions
	UserDataVariableGetValue ()
	Creates an object of the type UserDataVariableGetValue. More...
virtual	~UserDataVariableGetValue ()
	Destroys the UserDataVariableGetValue object. More...
UserDataType	getUserDataType () const
	Returns UserDataType_GetValue as UserDataType for the class UserDataVariableGetValue.
virtual void	getDataValue (UaDataValue &dataValue) const
	Default implementation for getting the value as DataValue. More...
virtual OpcUa_StatusCode	setDataValue (const UaDataValue &dataValue)
	Default implementation for setting the value. More...
Public Member Functions inherited from UserDataBase
	UserDataBase ()
	Creates an object of the type UserDataBase. More...
virtual	~UserDataBase ()
	Destroys the UserDataBase object. More...
virtual void	setInvalid ()
	This method is called by the SDK when the owning object of the user data was invalidated. More...

Additional Inherited Members
Public Types inherited from UserDataBase
enum	UserDataType { UserDataType_Custom, UserDataType_GetValue }
	Enumeration used to detect the type of user data for further processing. More...

Detailed Description

Specialized UserData class for UaVariable where the UserData class provides a capability to get the current value.

This class and the derived classes are used for instances of the UaVariable where polling access through NodeManagerUaNode::readValues is used for variables. This is usefull where the data of the underlying system is available in memory but data changes are not reported through events. In this case the functionality of UaDataVariableCache can not be used but the current value can be provided for generic polling through this user data class.

Constructor & Destructor Documentation

UserDataVariableGetValue::UserDataVariableGetValue

(

)

Creates an object of the type UserDataVariableGetValue.

UserDataVariableGetValue::~UserDataVariableGetValue ( )

virtual

Destroys the UserDataVariableGetValue object.

Member Function Documentation

void UserDataVariableGetValue::getDataValue ( UaDataValue &  dataValue ) const

virtual

Default implementation for getting the value as DataValue.

The default implementation is using getValue(). An implementation class can overwrite this method and return the DataValue directly

Reimplemented in UserDataGetCounterNodeId, UserDataGetCounterBoolean, UserDataGetCounterDouble, UserDataGetCounterByte, UserDataGetCounterUInt32, and UaVariableNs1UserDataGetCounter.

OpcUa_StatusCode UserDataVariableGetValue::setDataValue ( const UaDataValue &  dataValue )

virtual

Default implementation for setting the value.

The default implementation return BadNotWritable

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

• C:/work/uasdkcpp/src/uabase/uabasecpp/userdatabase.h
• C:/work/uasdkcpp/src/uabase/uabasecpp/userdatabase.cpp