org.lsst.ccs.gconsole.plugins.trending

Class CompoundTrendingSource

java.lang.Object

org.lsst.ccs.gconsole.plugins.trending.TrendingSource

org.lsst.ccs.gconsole.plugins.trending.CompoundTrendingSource

public class CompoundTrendingSource
extends TrendingSource

Combines several TrendingSources into a single source.

If a channel is available from more than one constituent source, there is no guarantees regarding the choice of the source that will be used to retrieve TrendData for that channel.

Author:

onoprien

Nested Class Summary

Nested classes/interfaces inherited from class org.lsst.ccs.gconsole.plugins.trending.TrendingSource

TrendingSource.Event, TrendingSource.Listener

Constructor Summary

Constructors

Constructor and Description
CompoundTrendingSource()

Method Summary

Modifier and Type	Method and Description
boolean	add(List<TrendingSource> sourcesToAdd)
boolean	add(TrendingSource source)
boolean	clear()
TrendData	get(TrendingChannel channel, long begin, long end, EnumSet<Trend.Meta> extra, TrendData data) Returns the time history data for the specified channel.
ArrayList<TrendingChannel>	getChannels() Returns a list of data channels accessible through this source.
boolean	remove(List<TrendingSource> sourcesToRemove)
boolean	remove(TrendingSource source)
boolean	set(List<TrendingSource> sourcesToSet)
boolean	set(TrendingSource source)

Methods inherited from class org.lsst.ccs.gconsole.plugins.trending.TrendingSource

addListener, fireEvent, removeListener

Methods inherited from class java.lang.Object

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

Constructor Detail

CompoundTrendingSource

public CompoundTrendingSource()

Method Detail

getChannels

public ArrayList<TrendingChannel> getChannels()

Description copied from class: TrendingSource

Returns a list of data channels accessible through this source.

Specified by:

getChannels in class TrendingSource

Returns:

The list of channels paths.

get

public TrendData get(TrendingChannel channel,
                     long begin,
                     long end,
                     EnumSet<Trend.Meta> extra,
                     TrendData data)

Description copied from class: TrendingSource

Returns the time history data for the specified channel. If the previously known time history is given, it may be updated and returned by this method, or a new instance of TrendData may be created.

Specified by:

get in class TrendingSource

Parameters:

channel - The channel.

begin - Beginning of the time window.

end - End of the time window.

extra - Metadata data to be included.

data - Known history for this channel.

Returns:

The time history, or null if this source does not provide data for the specified channel.

add

public boolean add(TrendingSource source)

add

public boolean add(List<TrendingSource> sourcesToAdd)

remove

public boolean remove(TrendingSource source)

remove

public boolean remove(List<TrendingSource> sourcesToRemove)

set

public boolean set(TrendingSource source)

set

public boolean set(List<TrendingSource> sourcesToSet)

clear

public boolean clear()