SimpleTurtleStarSerializer.md

Simple Turtle* Serializer

The class SinkTripleStarOutput can be used to serialize RDF* data. This class implements Jena's Sink<Triple> interface in a way that performs simple NTriples-style writing of RDF* data by using the Turtle* format for nested triples. To this end, the method send(Triple) of SinkTripleStarOutput can deal with Triple objects that have a Node_Triple object as their subject or their object (internally, this is implemented by using an extension of Jena's NodeFormatter that is called NodeFormatterTurtleStar).

The following example code demonstrates how the class SinkTripleStarOutput can be used to serialize RDF* data.

OutputStream outstream = ...
String baseIRI = ...
PrefixMap pmap = ...

// write a Turtle/Turtle* prologue to the output stream
IndentedWriter w = new IndentedWriter(outstream);
RiotLib.writeBase(w, base);
RiotLib.writePrefixes(w, pmap);
w.flush();

SinkTripleStarOutput out = new SinkTripleStarOutput(
	outstream,
	baseIRI,
	pmap,
	NodeToLabel.createScopeByDocument());

// create a triple (which may be nested) and write it to the
// output stream by using the SinkTripleStarOutput object
Triple t = ...
out.send( t );

out.close();