org.eclipse.scada.da.datasource.base

Class AbstractDataSourceHandler

java.lang.Object

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

org.eclipse.scada.da.datasource.base.AbstractDataSourceHandler

All Implemented Interfaces:

DataSource

Direct Known Subclasses:

DeltaDataSource, MasterItemImpl

public abstract class AbstractDataSourceHandler
extends AbstractDataSource

Basic implementation of a data source which is based on another data source.

Author:

Jens Reimann

Field Summary

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

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
AbstractDataSourceHandler(ObjectPoolTracker<DataSource> poolTracker)

Method Summary

Modifier and Type	Method and Description
void	dispose()
protected DataSource	getDataSource()
protected void	setDataSource(DataSource dataSource)
protected void	setDataSource(String dataSourceId)
protected abstract void	stateChanged(DataItemValue value)

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

addListener, getExecutor, removeListener, updateData

Methods inherited from class java.lang.Object

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

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

startWriteAttributes, startWriteValue

Constructor Detail

AbstractDataSourceHandler

public AbstractDataSourceHandler(ObjectPoolTracker<DataSource> poolTracker)

Method Detail

stateChanged

protected abstract void stateChanged(DataItemValue value)

setDataSource

protected void setDataSource(DataSource dataSource)

getDataSource

protected DataSource getDataSource()

setDataSource

protected void setDataSource(String dataSourceId)
                      throws org.osgi.framework.InvalidSyntaxException

Throws:

org.osgi.framework.InvalidSyntaxException

dispose

public void dispose()