org.eclipse.scada.da.datasource.sum

Class SumDataSource

java.lang.Object

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

org.eclipse.scada.da.datasource.sum.SumDataSource

All Implemented Interfaces:

DataSource

public class SumDataSource
extends AbstractDataSource

Field Summary

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

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
SumDataSource(ObjectPoolTracker<DataSource> poolTracker, Executor executor)

Method Summary

Modifier and Type	Method and Description
protected DataItemValue	aggregate(Map<String,DataSourceHandler> values, Map<String,DataSourceHandler> subValues)
void	dispose()
protected Executor	getExecutor() Return the executor to use for sending out events
protected void	handleChange()
NotifyFuture<WriteAttributeResults>	startWriteAttributes(Map<String,Variant> attributes, OperationParameters operationParameters)
NotifyFuture<WriteResult>	startWriteValue(Variant value, OperationParameters operationParameters)
void	update(Map<String,String> parameters)

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

SumDataSource

public SumDataSource(ObjectPoolTracker<DataSource> poolTracker,
                     Executor executor)

Method Detail

dispose

public void dispose()

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

startWriteAttributes

public NotifyFuture<WriteAttributeResults> startWriteAttributes(Map<String,Variant> attributes,
                                                                OperationParameters operationParameters)

startWriteValue

public NotifyFuture<WriteResult> startWriteValue(Variant value,
                                                 OperationParameters operationParameters)

update

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

Throws:

Exception

handleChange

protected void handleChange()

aggregate

protected DataItemValue aggregate(Map<String,DataSourceHandler> values,
                                  Map<String,DataSourceHandler> subValues)