org.apache.nutch.parse.ext

Class ExtParser

java.lang.Object

org.apache.nutch.parse.ext.ExtParser

All Implemented Interfaces:

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

public class ExtParser
extends Object
implements Parser

A wrapper that invokes external command to do real parsing job.

Author:

John Xing

Field Summary

Fields

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

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

X_POINT_ID

Constructor Summary

Constructors

Constructor and Description
ExtParser()

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.conf.Configuration	getConf()
ParseResult	getParse(Content content) This method parses the given content and returns a map of <key, parse> pairs.
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

ExtParser

public ExtParser()

Method Detail

getParse

public ParseResult getParse(Content content)

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:

content - Content to be parsed

Returns:

a map containing <key, parse> pairs

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