Package org.apache.any23.filter

Class IgnoreTitlesOfEmptyDocuments

java.lang.Object

org.apache.any23.filter.IgnoreTitlesOfEmptyDocuments

All Implemented Interfaces:

AutoCloseable, TripleHandler

public class IgnoreTitlesOfEmptyDocuments
extends Object
implements TripleHandler

A TripleHandler that suppresses output of the TitleExtractor unless some other triples could be parsed from the document. This is used when we don't want to have single-triple RDF documents around that contain only the title triple.

Author:

Richard Cyganiak (richard@cyganiak.de)

Constructor Summary

Constructors

Constructor	Description
IgnoreTitlesOfEmptyDocuments(TripleHandler wrapped)

Method Summary

Modifier and Type	Method	Description
void	close()	Will be called last and exactly once.
void	closeContext(ExtractionContext context)	Informs the handler that no more triples will come from a previously opened context.
void	endDocument(org.eclipse.rdf4j.model.IRI documentIRI)	Informs the handler that the end of the document has been reached.
void	openContext(ExtractionContext context)	Informs the handler that a new context has been established.
void	receiveNamespace(String prefix, String uri, ExtractionContext context)	Invoked with a currently open context, notifies the detection of a namespace.
void	receiveTriple(org.eclipse.rdf4j.model.Resource s, org.eclipse.rdf4j.model.IRI p, org.eclipse.rdf4j.model.Value o, org.eclipse.rdf4j.model.IRI g, ExtractionContext context)	Invoked with a currently open context, notifies the detection of a triple.
void	setContentLength(long contentLength)	Sets the length of the content to be processed.
void	startDocument(org.eclipse.rdf4j.model.IRI documentIRI)

Methods inherited from class java.lang.Object

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

Constructor Detail

IgnoreTitlesOfEmptyDocuments

public IgnoreTitlesOfEmptyDocuments(TripleHandler wrapped)

Method Detail

startDocument

public void startDocument(org.eclipse.rdf4j.model.IRI documentIRI)
                   throws TripleHandlerException

Specified by:

startDocument in interface TripleHandler

Throws:

TripleHandlerException

openContext

public void openContext(ExtractionContext context)
                 throws TripleHandlerException

Description copied from interface: TripleHandler

Informs the handler that a new context has been established. Contexts are not guaranteed to receive any triples, so they might be closed without any triple.

Specified by:

openContext in interface TripleHandler

Parameters:

context - an instantiated ExtractionContext

Throws:

TripleHandlerException - if there is an errr opening the ExtractionContext

receiveTriple

public void receiveTriple(org.eclipse.rdf4j.model.Resource s,
                          org.eclipse.rdf4j.model.IRI p,
                          org.eclipse.rdf4j.model.Value o,
                          org.eclipse.rdf4j.model.IRI g,
                          ExtractionContext context)
                   throws TripleHandlerException

Description copied from interface: TripleHandler

Invoked with a currently open context, notifies the detection of a triple.

Specified by:

receiveTriple in interface TripleHandler

Parameters:

s - triple subject, cannot be null.

p - triple predicate, cannot be null.

o - triple object, cannot be null.

g - triple graph, can be null.

context - extraction context.

Throws:

TripleHandlerException - if there is an error receiving the triple.

receiveNamespace

public void receiveNamespace(String prefix,
                             String uri,
                             ExtractionContext context)
                      throws TripleHandlerException

Description copied from interface: TripleHandler

Invoked with a currently open context, notifies the detection of a namespace.

Specified by:

receiveNamespace in interface TripleHandler

Parameters:

prefix - namespace prefix.

uri - namespace IRI.

context - namespace context.

Throws:

TripleHandlerException - if there is an error receiving the namespace.

closeContext

public void closeContext(ExtractionContext context)

Description copied from interface: TripleHandler

Informs the handler that no more triples will come from a previously opened context. All contexts are guaranteed to be closed before the final close(). The document context for each document is guaranteed to be closed after all local contexts of that document.

Specified by:

closeContext in interface TripleHandler

Parameters:

context - the context to be closed.

close

public void close()
           throws TripleHandlerException

Description copied from interface: TripleHandler

Will be called last and exactly once.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface TripleHandler

Throws:

TripleHandlerException - if there is an error closing the TripleHandler implementation.

endDocument

public void endDocument(org.eclipse.rdf4j.model.IRI documentIRI)
                 throws TripleHandlerException

Description copied from interface: TripleHandler

Informs the handler that the end of the document has been reached.

Specified by:

endDocument in interface TripleHandler

Parameters:

documentIRI - document IRI.

Throws:

TripleHandlerException - if there is an error ending the document.

setContentLength

public void setContentLength(long contentLength)

Description copied from interface: TripleHandler

Sets the length of the content to be processed.

Specified by:

setContentLength in interface TripleHandler

Parameters:

contentLength - length of the content being processed.