org.eclipse.smila.importing.crawler.web
Interface LinkFilter

All Known Implementing Classes:

DefaultLinkFilter

public interface LinkFilter

interface for LinkFilter services. The LinkFilter is called on the result of the LinkExtractor to select only those links that should really be followed in follow-up tasks.

Method Summary

boolean	allowLink(java.lang.String link, WebCrawlingContext context) Check if it is allowed to follow a given link.
java.util.Collection<Record>	filterLinks(java.util.Collection<Record> extractedLinks, WebCrawlingContext context) filter extracted links.

Method Detail

filterLinks

java.util.Collection<Record> filterLinks(java.util.Collection<Record> extractedLinks,
                                         WebCrawlingContext context)
                                         throws WebCrawlerException

filter extracted links.

Parameters:

extractedLinks - result from LinkExtractor service.

context - the WebCrawlingContext.

Returns:

links to follow in follow-up tasks

Throws:

WebCrawlerException - error in processing the links.

allowLink

boolean allowLink(java.lang.String link,
                  WebCrawlingContext context)
                  throws WebCrawlerException

Check if it is allowed to follow a given link.

Parameters:

link - a String containing the link to be checked

context - the WebCrawlingContext.

Returns:

true if the link is allowed to be followed, false otherwise

Throws:

WebCrawlerException - error in processing the links.