org.apache.nutch.parse.js

Class JSParseFilter

java.lang.Object

org.apache.nutch.parse.js.JSParseFilter

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, HtmlParseFilter, Parser, Pluggable

public class JSParseFilter
extends Object
implements HtmlParseFilter, Parser

This class is a heuristic link extractor for JavaScript files and code snippets. The general idea of a two-pass regex matching comes from Heritrix. Parts of the code come from OutlinkExtractor.java

Field Summary

Fields

Modifier and Type	Field and Description
static org.slf4j.Logger	LOG

Fields inherited from interface org.apache.nutch.parse.HtmlParseFilter

X_POINT_ID

Fields inherited from interface org.apache.nutch.parse.Parser

X_POINT_ID

Constructor Summary

Constructors

Constructor and Description
JSParseFilter()

Method Summary

Methods

Modifier and Type	Method and Description
ParseResult	filter(Content content, ParseResult parseResult, HTMLMetaTags metaTags, DocumentFragment doc) Adds metadata or otherwise modifies a parse of HTML content, given the DOM tree of a page.
org.apache.hadoop.conf.Configuration	getConf()
ParseResult	getParse(Content c) This method parses the given content and returns a map of <key, parse> pairs.
static void	main(String[] args)
void	setConf(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

JSParseFilter

public JSParseFilter()

Method Detail

filter

public ParseResult filter(Content content,
                 ParseResult parseResult,
                 HTMLMetaTags metaTags,
                 DocumentFragment doc)

Description copied from interface: HtmlParseFilter

Adds metadata or otherwise modifies a parse of HTML content, given the DOM tree of a page.

Specified by:

filter in interface HtmlParseFilter

getParse

public ParseResult getParse(Content c)

Description copied from interface: Parser

This method parses the given content and returns a map of <key, parse> pairs. Parse instances will be persisted under the given key.

Note: Meta-redirects should be followed only when they are coming from the original URL. That is:
Assume fetcher is in parsing mode and is currently processing foo.bar.com/redirect.html. If this url contains a meta redirect to another url, fetcher should only follow the redirect if the map contains an entry of the form <"foo.bar.com/redirect.html", Parse with a ParseStatus indicating the redirect>.

Specified by:

getParse in interface Parser

Parameters:

c - Content to be parsed

Returns:

a map containing <key, parse> pairs

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

getConf

public org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable