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( poolTracker, java.util.concurrent.Executor executor)

Method Summary

Methods

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

Method Detail

dispose

public void dispose()

getExecutor

protected java.util.concurrent.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  startWriteAttributes(java.util.Map<java.lang.String,Variant> attributes,
                         OperationParameters operationParameters)

startWriteValue

public  startWriteValue(Variant value,
                    OperationParameters operationParameters)

update

public void update(java.util.Map<java.lang.String,java.lang.String> parameters)
            throws java.lang.Exception

Throws:

java.lang.Exception

handleChange

protected void handleChange()

aggregate

protected DataItemValue aggregate(java.util.Map<java.lang.String,DataSourceHandler> values,
                      java.util.Map<java.lang.String,DataSourceHandler> subValues)