org.apache.nutch.protocol
Class ProtocolFactory

java.lang.Object
  org.apache.nutch.protocol.ProtocolFactory

public class ProtocolFactory
extends Object

Creates and caches Protocol plugins. Protocol plugins should define the attribute "protocolName" with the name of the protocol that they implement. Configuration object is used for caching. Cache key is constructed from appending protocol name (eg. http) to constant Protocol.X_POINT_ID.

Field Summary

static org.slf4j.Logger

LOG

Constructor Summary

ProtocolFactory(org.apache.hadoop.conf.Configuration conf)

Method Summary

Collection<WebPage.Field>	getFields()
Protocol	getProtocol(String urlString) Returns the appropriate Protocol implementation for a url.

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

ProtocolFactory

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

Method Detail

getProtocol

public Protocol getProtocol(String urlString)
                     throws ProtocolNotFound

Returns the appropriate Protocol implementation for a url.

Parameters:

urlString - Url String

Returns:

The appropriate Protocol implementation for a given URL.

Throws:

ProtocolNotFound - when Protocol can not be found for urlString

getFields

public Collection<WebPage.Field> getFields()