de.nava.informa.utils.poller
Class CompositeObserver

java.lang.Object
  de.nava.informa.utils.poller.CompositeObserver

All Implemented Interfaces:

PollerObserverIF

 class CompositeObserver
extends Object
implements PollerObserverIF

Composite observer delivers all received events to sub observers.

Author:

Aleksey Gureev (spyromus@noizeramp.com)

Constructor Summary

CompositeObserver()

Method Summary

void	add(PollerObserverIF observer) Adds new observer to the list.
void	channelChanged(ChannelIF channel) Invoked when Poller detected changes in channel information (title and etc).
void	channelErrored(ChannelIF channel, Exception e) Invoked by Poller when poller of the channel failed.
void	itemFound(ItemIF item, ChannelIF channel) Invoked by Poller when new item is approved for addition.
void	pollFinished(ChannelIF channel) Invoked by Poller when checking of the channel finished.
void	pollStarted(ChannelIF channel) Invoked by Poller when checking of the channel started.
void	remove(PollerObserverIF observer) Removes observer from the list.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeObserver

CompositeObserver()

Method Detail

itemFound

public final void itemFound(ItemIF item,
                            ChannelIF channel)

Invoked by Poller when new item is approved for addition. Item is transient and should be added to specified channel.

Specified by:

itemFound in interface PollerObserverIF

Parameters:

item - item added.

channel - destination channel.

channelErrored

public final void channelErrored(ChannelIF channel,
                                 Exception e)

Invoked by Poller when poller of the channel failed.

Specified by:

channelErrored in interface PollerObserverIF

Parameters:

channel - channel.

e - original cause of failure.

channelChanged

public final void channelChanged(ChannelIF channel)

Invoked when Poller detected changes in channel information (title and etc).

Specified by:

channelChanged in interface PollerObserverIF

Parameters:

channel - channel.

pollStarted

public final void pollStarted(ChannelIF channel)

Invoked by Poller when checking of the channel started.

Specified by:

pollStarted in interface PollerObserverIF

Parameters:

channel - channel.

pollFinished

public final void pollFinished(ChannelIF channel)

Invoked by Poller when checking of the channel finished.

Specified by:

pollFinished in interface PollerObserverIF

Parameters:

channel - channel.

add

public final void add(PollerObserverIF observer)

Adds new observer to the list.

Parameters:

observer - new observer.

remove

public final void remove(PollerObserverIF observer)

Removes observer from the list.

Parameters:

observer - registered observer.