Package org.apache.any23.writer

Class TripleWriterHandler

java.lang.Object

org.apache.any23.writer.TripleWriterHandler

All Implemented Interfaces:

AutoCloseable, TripleHandler, TripleWriter

Direct Known Subclasses:

JSONWriter, RDFWriterTripleHandler, URIListWriter

public abstract class TripleWriterHandler
extends Object
implements TripleHandler, TripleWriter

This class connects a TripleHandler to a TripleWriter by writing received data.

Author:

Hans Brende (hansbrende@apache.org)

Constructor Summary

Constructors

Constructor	Description
TripleWriterHandler()

Method Summary

Modifier and Type	Method	Description
void	closeContext(ExtractionContext context)	Writers may override this method to handle a "closeContext" extraction event.
void	endDocument(org.eclipse.rdf4j.model.IRI documentIRI)	Writers may override this method to handle an "endDocument" extraction event.
void	openContext(ExtractionContext context)	Writers may override this method to handle an "openContext" extraction event.
void	receiveNamespace(String prefix, String uri, ExtractionContext context)	Writers may override this method to handle a "receiveNamespace" extraction event.
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)	Writers may override this method to handle a "receiveTriple" extraction event.
void	setContentLength(long contentLength)	Writers may override this method to handle a "setContentLength" extraction event.
void	startDocument(org.eclipse.rdf4j.model.IRI documentIRI)	Writers may override this method to handle a "startDocument" extraction event.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.any23.writer.TripleHandler

close

Methods inherited from interface org.apache.any23.writer.TripleWriter

close, writeNamespace, writeTriple

Constructor Detail

TripleWriterHandler

public TripleWriterHandler()

Method Detail

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

Writers may override this method to handle a "receiveTriple" extraction event. The default implementation calls:

     this.writeTriple(s, p, o, context == null || g != null ? g : context.getDocumentIRI())
 

Specified by:

receiveTriple in interface TripleHandler

Parameters:

s - the subject received

p - the predicate received

o - the object received

g - the graph name received, or null

context - the extraction context

Throws:

TripleHandlerException - if there was an error responding to a received triple

receiveNamespace

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

Writers may override this method to handle a "receiveNamespace" extraction event. The default implementation calls:

     this.writeNamespace(prefix, uri)
 

Specified by:

receiveNamespace in interface TripleHandler

Parameters:

prefix - namespace prefix.

uri - namespace IRI.

context - the extraction context

Throws:

TripleHandlerException - if there was an error responding to the received namepsace.

startDocument

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

Writers may override this method to handle a "startDocument" extraction event. The default implementation does nothing.

Specified by:

startDocument in interface TripleHandler

Parameters:

documentIRI - the name of the document that was started

Throws:

TripleHandlerException - if an error occurred while responding to a "startDocument" extraction event.

openContext

public void openContext(ExtractionContext context)
                 throws TripleHandlerException

Writers may override this method to handle an "openContext" extraction event. The default implementation does nothing.

Specified by:

openContext in interface TripleHandler

Parameters:

context - the context that was opened

Throws:

TripleHandlerException - if an error occurred while responding to a "startDocument" extraction event.

closeContext

public void closeContext(ExtractionContext context)
                  throws TripleHandlerException

Writers may override this method to handle a "closeContext" extraction event. The default implementation does nothing.

Specified by:

closeContext in interface TripleHandler

Parameters:

context - the context to be closed.

Throws:

TripleHandlerException - if an error occurred while responding to a "closeContext" extraction event.

endDocument

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

Writers may override this method to handle an "endDocument" extraction event. The default implementation does nothing.

Specified by:

endDocument in interface TripleHandler

Parameters:

documentIRI - the document IRI.

Throws:

TripleHandlerException - if an error occurred while responding to a "endDocument" extraction event.

setContentLength

public void setContentLength(long contentLength)

Writers may override this method to handle a "setContentLength" extraction event. The default implementation does nothing.

Specified by:

setContentLength in interface TripleHandler

Parameters:

contentLength - length of the content being processed.