org.eclipse.scada.da.datasource.changecounter

Class ChangeCounterDataSource

java.lang.Object

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

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

org.eclipse.scada.da.datasource.changecounter.ChangeCounterDataSource

All Implemented Interfaces:

BufferedDataSourceListener, DataSource, SingleObjectPoolServiceTracker.ServiceListener<BufferedDataSource>

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

Field Summary

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

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
ChangeCounterDataSource(ScheduledExecutorService scheduler, ObjectPoolTracker<BufferedDataSource> poolTracker)

Method Summary

Modifier and Type	Method and Description
void	dispose()
protected Executor	getExecutor() Return the executor to use for sending out events
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

ChangeCounterDataSource

public ChangeCounterDataSource(ScheduledExecutorService scheduler,
                               ObjectPoolTracker<BufferedDataSource> poolTracker)

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>