org.eclipse.scada.hd.server.proxy

Class QueryImpl

java.lang.Object

org.eclipse.scada.hd.server.proxy.QueryImpl

All Implemented Interfaces:

Query, ProxyHistoricalItem.ItemListener

public class QueryImpl
extends Object
implements Query, ProxyHistoricalItem.ItemListener

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	QueryImpl.QueryEntry

Constructor Summary

Constructors

Constructor and Description
QueryImpl(ProxyHistoricalItem item, QueryParameters parameters, QueryListener listener, boolean updateData, Executor executor)

Method Summary

Methods

Modifier and Type	Method and Description
void	changeParameters(QueryParameters parameters) Request a change of parameters
void	close() Close the query
protected void	handleChangeParameters(QueryParameters parameters)
void	listenersChanges(Collection<ProxyValueSource.ServiceEntry> added, Collection<ProxyValueSource.ServiceEntry> removed)
protected void	performRender()
void	render()

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryImpl

public QueryImpl(ProxyHistoricalItem item,
         QueryParameters parameters,
         QueryListener listener,
         boolean updateData,
         Executor executor)

Method Detail

close

public void close()

Description copied from interface: Query

Close the query

Specified by:

close in interface Query

changeParameters

public void changeParameters(QueryParameters parameters)

Description copied from interface: Query

Request a change of parameters

Specified by:

changeParameters in interface Query

Parameters:

parameters - the new requested parameters

handleChangeParameters

protected void handleChangeParameters(QueryParameters parameters)

listenersChanges

public void listenersChanges(Collection<ProxyValueSource.ServiceEntry> added,
                    Collection<ProxyValueSource.ServiceEntry> removed)

Specified by:

listenersChanges in interface ProxyHistoricalItem.ItemListener

render

public void render()

performRender

protected void performRender()