org.openrdf.rio.n3
Class N3Writer

java.lang.Object
  org.openrdf.rio.n3.N3Writer

All Implemented Interfaces:

RdfDocumentWriter

public class N3Writer

extends Object

implements RdfDocumentWriter

An implementation of the RdfDocumentWriter interface that writes RDF documents in N3 format. Note: the current implementation simply wraps a TurtleWriter and writes documents in Turtle format, which is a subset of N3.

Constructor Summary

N3Writer(OutputStream out)
Creates a new N3Writer that will write to the supplied OutputStream.

N3Writer(Writer out)
Creates a new N3Writer that will write to the supplied Writer.

Method Summary

void	endDocument() Ends the document writing.
void	setNamespace(String prefix, String name) Sets a mapping from a namespace prefix to a namespace name.
void	startDocument() Starts the document writing.
void	writeComment(String comment) Writes a comment to the document.
void	writeStatement(Resource subj, URI pred, Value obj) Writes a statement to the document.

Methods inherited from class java.lang.Object

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

Constructor Detail

N3Writer

public N3Writer(OutputStream out)

Creates a new N3Writer that will write to the supplied OutputStream.

Parameters:

out - The OutputStream to write the N3 document to.

N3Writer

public N3Writer(Writer out)

Creates a new N3Writer that will write to the supplied Writer.

Parameters:

out - The Writer to write the N3 document to.

Method Detail

setNamespace

public void setNamespace(String prefix,
                         String name)
                  throws IOException

Description copied from interface: RdfDocumentWriter

Sets a mapping from a namespace prefix to a namespace name. Some implementations of this interface may require that namespace are set before the document writing starts (i.e. before startDocument() is called). Note that a mapping can only be defined once for a given namespace name. The RdfDocumentWriter will ignore an attempt to define a mapping for a namespace it already has a mapping for.

Specified by:

setNamespace in interface RdfDocumentWriter

Throws:

IOException

startDocument

public void startDocument()
                   throws IOException

Description copied from interface: RdfDocumentWriter

Starts the document writing.

Specified by:

startDocument in interface RdfDocumentWriter

Throws:

IOException

endDocument

public void endDocument()
                 throws IOException

Description copied from interface: RdfDocumentWriter

Ends the document writing.

Specified by:

endDocument in interface RdfDocumentWriter

Throws:

IOException

writeStatement

public void writeStatement(Resource subj,
                           URI pred,
                           Value obj)
                    throws IOException

Description copied from interface: RdfDocumentWriter

Writes a statement to the document. The startDocument() method should have been called before.

Specified by:

writeStatement in interface RdfDocumentWriter

Throws:

IOException

writeComment

public void writeComment(String comment)
                  throws IOException

Description copied from interface: RdfDocumentWriter

Writes a comment to the document. An implementation may ignore these calls if the format doesn't support comments.

Specified by:

writeComment in interface RdfDocumentWriter

Throws:

IOException