org.eclipse.scada.hd.server.common.item.internal

Class HistoricalItemImpl

java.lang.Object

org.eclipse.scada.hd.server.common.item.internal.HistoricalItemImpl

All Implemented Interfaces:

DataSourceListener, HistoricalItem

public class HistoricalItemImpl
extends Object
implements HistoricalItem, DataSourceListener

Constructor Summary

Constructors

Constructor and Description
HistoricalItemImpl(HistoricalItemInformation itemInformation, String masterId, org.osgi.framework.BundleContext context)
HistoricalItemImpl(String id, Map<String,Variant> attributes, String masterId, org.osgi.framework.BundleContext context)

Method Summary

Modifier and Type	Method and Description
Query	createQuery(QueryParameters parameters, QueryListener listener, boolean updateData) Create a new query
HistoricalItemInformation	getInformation() Get the item information
protected void	setDataSource(DataSource service)
protected void	setStorage(StorageHistoricalItem service)
void	start()
void	stateChanged(DataItemValue value)
void	stop()
void	update(Map<String,String> properties)

Methods inherited from class java.lang.Object

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

Constructor Detail

HistoricalItemImpl

public HistoricalItemImpl(HistoricalItemInformation itemInformation,
                          String masterId,
                          org.osgi.framework.BundleContext context)
                   throws org.osgi.framework.InvalidSyntaxException

Throws:

org.osgi.framework.InvalidSyntaxException

HistoricalItemImpl

public HistoricalItemImpl(String id,
                          Map<String,Variant> attributes,
                          String masterId,
                          org.osgi.framework.BundleContext context)
                   throws org.osgi.framework.InvalidSyntaxException

Throws:

org.osgi.framework.InvalidSyntaxException

Method Detail

setDataSource

protected void setDataSource(DataSource service)

setStorage

protected void setStorage(StorageHistoricalItem service)

start

public void start()
           throws org.osgi.framework.InvalidSyntaxException

Throws:

org.osgi.framework.InvalidSyntaxException

stop

public void stop()

createQuery

public Query createQuery(QueryParameters parameters,
                         QueryListener listener,
                         boolean updateData)

Description copied from interface: HistoricalItem

Create a new query

Specified by:

createQuery in interface HistoricalItem

Parameters:

parameters - the initial query parameters

listener - the query listener

updateData - if true then additional updates will be made by the query when data changes although the query is QueryState.COMPLETE

Returns:

the new query or null if the query could be be created

getInformation

public HistoricalItemInformation getInformation()

Description copied from interface: HistoricalItem

Get the item information

Specified by:

getInformation in interface HistoricalItem

Returns:

the item information

stateChanged

public void stateChanged(DataItemValue value)

Specified by:

stateChanged in interface DataSourceListener

update

public void update(Map<String,String> properties)
            throws org.osgi.framework.InvalidSyntaxException

Throws:

org.osgi.framework.InvalidSyntaxException