org.eclipse.scada.da.datasource.totalizer

Class TotalizerDataSource

java.lang.Object

org.eclipse.scada.da.datasource.base.AbstractDataSource

org.eclipse.scada.da.datasource.base.AbstractInputDataSource

org.eclipse.scada.da.datasource.totalizer.TotalizerDataSource

All Implemented Interfaces:

BufferedDataSourceListener, DataSource, DataListener, SingleObjectPoolServiceTracker.ServiceListener<BufferedDataSource>

public class TotalizerDataSource
extends AbstractInputDataSource
implements BufferedDataSourceListener, SingleObjectPoolServiceTracker.ServiceListener<BufferedDataSource>, DataListener

Field Summary

Fields inherited from interface org.eclipse.scada.da.datasource.DataSource

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
TotalizerDataSource(ScheduledExecutorService scheduler, ObjectPoolTracker<BufferedDataSource> poolTracker, DataNodeTracker dataNodeTracker)

Method Summary

Modifier and Type	Method and Description
void	dispose()
protected Executor	getExecutor() Return the executor to use for sending out events
void	nodeChanged(DataNode node) Gets called when the node changed.
void	serviceChange(BufferedDataSource service, Dictionary<?,?> properties)
void	stateChanged(DataItemValueRange dataItemValueRange)
void	update(Map<String,String> parameters)

Methods inherited from class org.eclipse.scada.da.datasource.base.AbstractInputDataSource

startWriteAttributes, startWriteValue

Methods inherited from class org.eclipse.scada.da.datasource.base.AbstractDataSource

addListener, removeListener, updateData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TotalizerDataSource

public TotalizerDataSource(ScheduledExecutorService scheduler,
                           ObjectPoolTracker<BufferedDataSource> poolTracker,
                           DataNodeTracker dataNodeTracker)

Method Detail

getExecutor

protected Executor getExecutor()

Description copied from class: AbstractDataSource

Return the executor to use for sending out events

Specified by:

getExecutor in class AbstractDataSource

Returns:

the executor to use, must never be null

update

public void update(Map<String,String> parameters)

stateChanged

public void stateChanged(DataItemValueRange dataItemValueRange)

Specified by:

stateChanged in interface BufferedDataSourceListener

dispose

public void dispose()

serviceChange

public void serviceChange(BufferedDataSource service,
                          Dictionary<?,?> properties)

Specified by:

serviceChange in interface SingleObjectPoolServiceTracker.ServiceListener<BufferedDataSource>

nodeChanged

public void nodeChanged(DataNode node)

Description copied from interface: DataListener

Gets called when the node changed.

Specified by:

nodeChanged in interface DataListener

Parameters:

node - the current status or null if the does not exist or gets deleted.