org.eclipse.scada.da.datasource.ds

Class DataStoreDataSource

java.lang.Object

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

org.eclipse.scada.da.datasource.ds.DataStoreDataSource

All Implemented Interfaces:

DataSource, DataListener

public class DataStoreDataSource
extends AbstractDataSource
implements DataListener

Field Summary

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

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
DataStoreDataSource(org.osgi.framework.BundleContext context, String id, Executor executor, DataNodeTracker dataNodeTracker)

Method Summary

Modifier and Type	Method and Description
protected org.eclipse.scada.da.datasource.ds.DataStoreDataSource.Value	convertValue(DataNode node)
void	dispose()
protected Executor	getExecutor() Return the executor to use for sending out events
void	nodeChanged(DataNode node) Gets called when the node changed.
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

DataStoreDataSource

public DataStoreDataSource(org.osgi.framework.BundleContext context,
                           String id,
                           Executor executor,
                           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

startWriteAttributes

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

Specified by:

startWriteAttributes in interface DataSource

startWriteValue

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

Specified by:

startWriteValue in interface DataSource

update

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

Throws:

Exception

dispose

public void dispose()

convertValue

protected org.eclipse.scada.da.datasource.ds.DataStoreDataSource.Value convertValue(DataNode node)
                                                                             throws IOException,
                                                                                    ClassNotFoundException

Throws:

IOException

ClassNotFoundException

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.