C# Class Opc.Ua.Sample.MonitoredItemQueue

Provides a queue for data changes.

ファイルを表示 Open project: OPCFoundation/UA-.NET Class Usage Examples

Public Methods

Method	Description
MonitoredItemQueue ( ) : System	Creates an empty queue.
Publish ( DataValue &value, ServiceResult &error ) : bool	Publishes the oldest value in the queue.
QueueValue ( DataValue value, ServiceResult error ) : void	Adds the value to the queue.
SetQueueSize ( uint queueSize, bool discardOldest, DiagnosticsMasks diagnosticsMasks ) : void	Sets the queue size.
SetSamplingInterval ( double samplingInterval ) : void	Sets the sampling interval used when queuing values.

Private Methods

Method	Description
Dequeue ( DataValue &value, ServiceResult &error ) : bool	Removes a value and an error from the queue.
Enqueue ( DataValue value, ServiceResult error ) : void	Adds the value to the queue. Discards values if the queue is full.
SetOverflowBit ( DataValue &value, ServiceResult &error ) : void	Sets the overflow bit in the value and error.

Method Details

MonitoredItemQueue() public method

Creates an empty queue.

public MonitoredItemQueue ( ) : System
return	System

Publish() public method

Publishes the oldest value in the queue.

public Publish ( DataValue &value, ServiceResult &error ) : bool
value	DataValue	The value.
error	ServiceResult	The error associated with the value.
return	bool

QueueValue() public method

Adds the value to the queue.

public QueueValue ( DataValue value, ServiceResult error ) : void
value	DataValue	The value to queue.
error	ServiceResult	The error to queue.
return	void

SetQueueSize() public method

Sets the queue size.

public SetQueueSize ( uint queueSize, bool discardOldest, DiagnosticsMasks diagnosticsMasks ) : void
queueSize	uint	The new queue size.
discardOldest	bool	Whether to discard the oldest values if the queue overflows.
diagnosticsMasks	DiagnosticsMasks	Specifies which diagnostics which should be kept in the queue.
return	void

SetSamplingInterval() public method

Sets the sampling interval used when queuing values.

public SetSamplingInterval ( double samplingInterval ) : void
samplingInterval	double	The new sampling interval.
return	void