org.openrdf.elmo.scutter
Class SimpleRetriever

java.lang.Object
  org.openrdf.elmo.scutter.SimpleRetriever

All Implemented Interfaces:

Runnable, Retriever

Direct Known Subclasses:

FoafRetriever

public class SimpleRetriever
extends Object
implements Retriever

A SimpleRetriever is instantiated by the Scutter class for every URL to be visited. The Retriver fetches that document and adds the allowed statements to an in-memory repository. Statements can be optionally filtered by specying a StatementFilter. The seeAlso statements found in the document are added to the scutter queue.

Version:

$Revision: 1.8 $

Author:

Peter Mika (original version for Jena by Matt Biddulph.)

Field Summary

protected StatementFilter	_filter
protected DocumentHandler	_handler
protected static Logger	_logger
protected boolean	_ok
protected RDFParser	_parser
protected Repository	_repository
protected Scutter	_scutter
protected URL	_url

Constructor Summary

SimpleRetriever(URL url, Repository repository, Scutter scutter)

Method Summary

void	addSeeAlsos(Repository incoming) Add all rdfs:seeAlso statements to the queue from the specified repository.
protected void	aggregate(Repository incoming, String url)
void	run()
void	setFilter(StatementFilter f)
void	setRepository(Repository r)
void	setScutter(Scutter s)
void	setUrl(URL u)

Methods inherited from class java.lang.Object

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

Field Detail

_url

protected URL _url

_scutter

protected Scutter _scutter

_repository

protected Repository _repository

_ok

protected boolean _ok

_logger

protected static final Logger _logger

_parser

protected RDFParser _parser

_filter

protected StatementFilter _filter

_handler

protected DocumentHandler _handler

Constructor Detail

SimpleRetriever

public SimpleRetriever(URL url,
                       Repository repository,
                       Scutter scutter)

Method Detail

setRepository

public void setRepository(Repository r)

Specified by:

setRepository in interface Retriever

setScutter

public void setScutter(Scutter s)

Specified by:

setScutter in interface Retriever

setUrl

public void setUrl(URL u)

Specified by:

setUrl in interface Retriever

setFilter

public void setFilter(StatementFilter f)

Specified by:

setFilter in interface Retriever

run

public void run()

Specified by:

run in interface Runnable

aggregate

protected void aggregate(Repository incoming,
                         String url)
                  throws RepositoryException

Throws:

RepositoryException

addSeeAlsos

public void addSeeAlsos(Repository incoming)
                 throws RepositoryException

Add all rdfs:seeAlso statements to the queue from the specified repository.

Parameters:

incoming -

Throws:

RepositoryException