Package org.apache.any23.writer

Class URIListWriter

java.lang.Object

org.apache.any23.writer.TripleWriterHandler

org.apache.any23.writer.URIListWriter

All Implemented Interfaces:

AutoCloseable, FormatWriter, TripleHandler, TripleWriter

public class URIListWriter
extends TripleWriterHandler
implements FormatWriter

This writer simply produces a list of unique IRI present in the subject or in the object of every single extracted RDF Statement.

Author:

Davide Palmisano (palmisano@fbk.eu), Hans Brende (hansbrende@apache.org)

Constructor Summary

Constructors

Constructor	Description
URIListWriter(OutputStream outputStream)

Method Summary

Modifier and Type	Method	Description
void	close()	Will be called last and exactly once.
void	endDocument(org.eclipse.rdf4j.model.IRI documentIRI)	Writers may override this method to handle an "endDocument" extraction event.
boolean	isAnnotated()	If true then the produced RDF is annotated with the extractors used to generate the specific statements.
void	setAnnotated(boolean f)	Sets the annotation flag.
void	writeNamespace(String prefix, String uri)	Writes a prefix-namespace mapping.
void	writeTriple(org.eclipse.rdf4j.model.Resource s, org.eclipse.rdf4j.model.IRI p, org.eclipse.rdf4j.model.Value o, org.eclipse.rdf4j.model.Resource g)	Writes a triple and, optionally, a graph resource name.

Methods inherited from class org.apache.any23.writer.TripleWriterHandler

closeContext, openContext, receiveNamespace, receiveTriple, setContentLength, startDocument

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

closeContext, openContext, receiveNamespace, receiveTriple, setContentLength, startDocument

Constructor Detail

URIListWriter

public URIListWriter(OutputStream outputStream)

Method Detail

writeTriple

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

Description copied from interface: TripleWriter

Writes a triple and, optionally, a graph resource name.

Specified by:

writeTriple in interface TripleWriter

Parameters:

s - the subject to write

p - the predicate to write

o - the object to write

g - the graph name to write, or null

Throws:

TripleHandlerException - if there is an error writing the triple

writeNamespace

public void writeNamespace(String prefix,
                           String uri)
                    throws TripleHandlerException

Description copied from interface: TripleWriter

Writes a prefix-namespace mapping.
NOTE: this method should be called before writing out any triples. Calling this method after writing out a triple may result in the prefix-namespace mapping being ignored.

Specified by:

writeNamespace in interface TripleWriter

Parameters:

prefix - the namespace prefix

uri - the namespace uri

Throws:

TripleHandlerException - if there was an error writing out the prefix-namespace mapping

endDocument

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

Description copied from class: TripleWriterHandler

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

Specified by:

endDocument in interface TripleHandler

Overrides:

endDocument in class TripleWriterHandler

Parameters:

documentIRI - the document IRI.

Throws:

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

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

Specified by:

close in interface TripleWriter

Throws:

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

isAnnotated

public boolean isAnnotated()

Description copied from interface: FormatWriter

If true then the produced RDF is annotated with the extractors used to generate the specific statements.

Specified by:

isAnnotated in interface FormatWriter

Returns:

the annotation flag value.

setAnnotated

public void setAnnotated(boolean f)

Description copied from interface: FormatWriter

Sets the annotation flag.

Specified by:

setAnnotated in interface FormatWriter

Parameters:

f - If true then the produced RDF is annotated with the extractors used to generate the specific statements.