de.nava.informa.utils.poller
Class PersistenceObserver

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

All Implemented Interfaces:

PollerObserverIF

public class PersistenceObserver
extends Object
implements PollerObserverIF

Watches for event about new items and calls given manager to create items in channels.

Author:

Aleksey Gureev (spyromus@noizeramp.com)

Constructor Summary

PersistenceObserver(PersistenceManagerIF manager)
Creates observer.

Method Summary

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.

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistenceObserver

public PersistenceObserver(PersistenceManagerIF manager)

Creates observer.

Parameters:

manager - persistence manager to use.

Throws:

IllegalArgumentException - if manager isn't specified.

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 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 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 void pollStarted(ChannelIF channel)

Invoked by Poller when checking of the channel started.

Specified by:

pollStarted in interface PollerObserverIF

Parameters:

channel - channel.

pollFinished

public void pollFinished(ChannelIF channel)

Invoked by Poller when checking of the channel finished.

Specified by:

pollFinished in interface PollerObserverIF

Parameters:

channel - channel.