org.clapper.curn.plugins
Class IgnoreDuplicateArticlesPlugIn

java.lang.Object
  org.clapper.curn.plugins.IgnoreDuplicateArticlesPlugIn

All Implemented Interfaces:

FeedConfigItemPlugIn, PlugIn, PostFeedParsePlugIn

public class IgnoreDuplicateArticlesPlugIn
extends java.lang.Object
implements FeedConfigItemPlugIn, PostFeedParsePlugIn

The IgnoreDuplicateArticlesPlugIn handles removing duplicate items from downloaded feeds, where "duplicate" means "has the same title". It intercepts the following per-feed configuration parameters:

Parameter	Meaning
IgnoreDuplicateTitles	Set to "true" to strip duplicate titles, "false" to pass them along. Defaults to "false".

Version:

$Revision: 6491 $

Constructor Summary

IgnoreDuplicateArticlesPlugIn()
Default constructor (required).

Method Summary

java.lang.String	getPlugInName() Get a displayable name for the plug-in.
java.lang.String	getPlugInSortKey() Get the sort key for this plug-in.
void	initPlugIn() Initialize the plug-in.
boolean	runFeedConfigItemPlugIn(java.lang.String sectionName, java.lang.String paramName, CurnConfig config, FeedInfo feedInfo) Called immediately after curn has read and processed a configuration item in a "feed" configuration section.
boolean	runPostFeedParsePlugIn(FeedInfo feedInfo, RSSChannel channel) Called immediately after a feed is parsed, but before it is otherwise processed.

Methods inherited from class java.lang.Object

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

Constructor Detail

IgnoreDuplicateArticlesPlugIn

public IgnoreDuplicateArticlesPlugIn()

Default constructor (required).

Method Detail

getPlugInName

public java.lang.String getPlugInName()

Get a displayable name for the plug-in.

Specified by:

getPlugInName in interface PlugIn

Returns:

the name

getPlugInSortKey

public java.lang.String getPlugInSortKey()

Get the sort key for this plug-in.

Specified by:

getPlugInSortKey in interface PlugIn

Returns:

the sort key string.

initPlugIn

public void initPlugIn()
                throws CurnException

Initialize the plug-in. This method is called before any of the plug-in methods are called.

Specified by:

initPlugIn in interface PlugIn

Throws:

CurnException - on error

runFeedConfigItemPlugIn

public boolean runFeedConfigItemPlugIn(java.lang.String sectionName,
                                       java.lang.String paramName,
                                       CurnConfig config,
                                       FeedInfo feedInfo)
                                throws CurnException

Called immediately after curn has read and processed a configuration item in a "feed" configuration section. All configuration items are passed, one by one, to each loaded plug-in. If a plug-in class is not interested in a particular configuration item, this method should simply return without doing anything. Note that some configuration items may simply be variable assignment; there's no real way to distinguish a variable assignment from a blessed configuration item.

Specified by:

runFeedConfigItemPlugIn in interface FeedConfigItemPlugIn

Parameters:

sectionName - the name of the configuration section where the item was found

paramName - the name of the parameter

config - the active configuration

feedInfo - partially complete FeedInfo object for the feed. The URL is guaranteed to be present, but no other fields are.

Returns:

true to continue processing the feed, false to skip it

Throws:

CurnException - on error

See Also:

CurnConfig, FeedInfo, FeedInfo.getURL()

runPostFeedParsePlugIn

public boolean runPostFeedParsePlugIn(FeedInfo feedInfo,
                                      RSSChannel channel)
                               throws CurnException

Called immediately after a feed is parsed, but before it is otherwise processed. This method can return false to signal curn that the feed should be skipped. For instance, a plug-in that filters on the parsed feed data could use this method to weed out non-matching feeds before they are downloaded. Similarly, a plug-in that edits the parsed data (removing or editing individual items, for instance) could use method to do so.

Specified by:

runPostFeedParsePlugIn in interface PostFeedParsePlugIn

Parameters:

feedInfo - the FeedInfo object for the feed that has been downloaded and parsed.

channel - the parsed channel data

Returns:

true if curn should continue to process the feed, false to skip the feed. A return value of false aborts all further processing on the feed. In particular, curn will not pass the feed along to other plug-ins that have yet to be notified of this event.

Throws:

CurnException - on error

See Also:

RSSChannel, FeedInfo