org.openrdf.rio.trig
Class TriGWriter

java.lang.Object
  org.openrdf.rio.turtle.TurtleWriter
      org.openrdf.rio.trig.TriGWriter

All Implemented Interfaces:

RDFHandler, RDFWriter

public class TriGWriter
extends TurtleWriter

An extension of TurtleWriter that writes RDF documents in TriG format by adding graph scopes to the Turtle document.

Author:

Arjohn Kampman

Field Summary

Fields inherited from class org.openrdf.rio.turtle.TurtleWriter

lastWrittenPredicate, lastWrittenSubject, namespaceTable, statementClosed, writer, writingStarted

Constructor Summary

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

TriGWriter(Writer writer)
Creates a new TriGWriter that will write to the supplied Writer.

Method Summary

protected void	closeActiveContext()
void	endRDF() Signals the end of the RDF data.
RDFFormat	getRDFFormat() Gets the RDF format that this RDFWriter uses.
void	handleStatement(Statement st) Handles a statement.
void	startRDF() Signals the start of the RDF data.
protected void	writeCommentLine(String line)
protected void	writeNamespace(String prefix, String name)

Methods inherited from class org.openrdf.rio.turtle.TurtleWriter

closePreviousStatement, handleComment, handleNamespace, writeBNode, writeLiteral, writePredicate, writeResource, writeURI, writeValue

Methods inherited from class java.lang.Object

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

Constructor Detail

TriGWriter

public TriGWriter(OutputStream out)

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

Parameters:

out - The OutputStream to write the TriG document to.

TriGWriter

public TriGWriter(Writer writer)

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

Parameters:

writer - The Writer to write the TriG document to.

Method Detail

getRDFFormat

public RDFFormat getRDFFormat()

Description copied from interface: RDFWriter

Gets the RDF format that this RDFWriter uses.

Specified by:

getRDFFormat in interface RDFWriter

Overrides:

getRDFFormat in class TurtleWriter

startRDF

public void startRDF()
              throws RDFHandlerException

Description copied from interface: RDFHandler

Signals the start of the RDF data. This method is called before any data is reported.

Specified by:

startRDF in interface RDFHandler

Overrides:

startRDF in class TurtleWriter

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

endRDF

public void endRDF()
            throws RDFHandlerException

Description copied from interface: RDFHandler

Signals the end of the RDF data. This method is called when all data has been reported.

Specified by:

endRDF in interface RDFHandler

Overrides:

endRDF in class TurtleWriter

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

handleStatement

public void handleStatement(Statement st)
                     throws RDFHandlerException

Description copied from interface: RDFHandler

Handles a statement.

Specified by:

handleStatement in interface RDFHandler

Overrides:

handleStatement in class TurtleWriter

Parameters:

st - The statement.

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

writeCommentLine

protected void writeCommentLine(String line)
                         throws IOException

Overrides:

writeCommentLine in class TurtleWriter

Throws:

IOException

writeNamespace

protected void writeNamespace(String prefix,
                              String name)
                       throws IOException

Overrides:

writeNamespace in class TurtleWriter

Throws:

IOException

closeActiveContext

protected void closeActiveContext()
                           throws IOException

Throws:

IOException