Package com.norconex.collector.http.link.impl

Class TikaLinkExtractor

java.lang.Object

com.norconex.collector.http.link.AbstractLinkExtractor

com.norconex.collector.http.link.impl.TikaLinkExtractor

All Implemented Interfaces:

ILinkExtractor, IXMLConfigurable

public class TikaLinkExtractor
extends AbstractLinkExtractor

Implementation of ILinkExtractor using Apache Tika to perform URL extractions from HTML documents. This is an alternative to the HtmlLinkExtractor.

The configuration of content-types, storing the referrer data, and ignoring "nofollow" and ignoring link data are the same as in HtmlLinkExtractor. For link data, this parser only keeps a pre-defined set of link attributes, when available (title, type, uri, text, rel).

XML configuration usage:

<extractor
    class="com.norconex.collector.http.link.impl.TikaLinkExtractor"
    ignoreNofollow="[false|true]"/>

Author:

Pascal Essiembre

See Also:

HtmlLinkExtractor

Constructor Summary

Constructors

Constructor	Description
TikaLinkExtractor()

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)
void	extractLinks(Set<Link> nxLinks, CrawlDoc doc)
int	hashCode()
boolean	isIgnoreLinkData()	Gets whether to ignore extra data associated with a link.
boolean	isIgnoreNofollow()
protected void	loadLinkExtractorFromXML(XML xml)	Loads configuration settings specific to the implementing class.
protected void	saveLinkExtractorToXML(XML xml)	Saves configuration settings specific to the implementing class.
void	setIgnoreLinkData(boolean ignoreLinkData)	Sets whether to ignore extra data associated with a link.
void	setIgnoreNofollow(boolean ignoreNofollow)
String	toString()

Methods inherited from class com.norconex.collector.http.link.AbstractLinkExtractor

addRestriction, addRestrictions, clearRestrictions, extractLinks, getRestrictions, loadFromXML, removeRestriction, removeRestriction, saveToXML, setRestrictions

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TikaLinkExtractor

public TikaLinkExtractor()

Method Detail

extractLinks

public void extractLinks(Set<Link> nxLinks,
                         CrawlDoc doc)
                  throws IOException

Specified by:

extractLinks in class AbstractLinkExtractor

Throws:

IOException

isIgnoreNofollow

public boolean isIgnoreNofollow()

setIgnoreNofollow

public void setIgnoreNofollow(boolean ignoreNofollow)

isIgnoreLinkData

public boolean isIgnoreLinkData()

Gets whether to ignore extra data associated with a link.

Returns:

true to ignore.

Since:

3.0.0

setIgnoreLinkData

public void setIgnoreLinkData(boolean ignoreLinkData)

Sets whether to ignore extra data associated with a link.

Parameters:

ignoreLinkData - true to ignore.

Since:

3.0.0

loadLinkExtractorFromXML

protected void loadLinkExtractorFromXML(XML xml)

Description copied from class: AbstractLinkExtractor

Loads configuration settings specific to the implementing class.

Specified by:

loadLinkExtractorFromXML in class AbstractLinkExtractor

Parameters:

xml - XML configuration

saveLinkExtractorToXML

protected void saveLinkExtractorToXML(XML xml)

Description copied from class: AbstractLinkExtractor

Saves configuration settings specific to the implementing class.

Specified by:

saveLinkExtractorToXML in class AbstractLinkExtractor

Parameters:

xml - the XML

equals

public boolean equals(Object other)

Overrides:

equals in class AbstractLinkExtractor

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractLinkExtractor

toString

public String toString()

Overrides:

toString in class AbstractLinkExtractor