net.rootdev.javardfa.output
Class NTripleSink

java.lang.Object
  net.rootdev.javardfa.output.NTripleSink

All Implemented Interfaces:

StatementSink

Direct Known Subclasses:

TurtleSink

public class NTripleSink
extends Object
implements StatementSink

A pretty ropey NTriple serialiser. Advantages: streams, no dependencies.

Author:

pldms

Field Summary

protected String[]	comments
protected PrintWriter	out

Constructor Summary

NTripleSink(OutputStream os, String... comments)

NTripleSink(Writer writer, String... comments)

Method Summary

void	addLiteral(String subject, String predicate, String lex, String lang, String datatype) Add statement with a literal object.
void	addObject(String subject, String predicate, String object) Add statement with non-literal object.
void	addPrefix(String prefix, String uri) Add a prefix mapping.
protected String	enc(int codepoint)
protected String	encode(String s)
void	end() Complete parsing
protected String	longenc(int codepoint)
protected String	quote(String lex)
void	setBase(String base)
void	start() Begin parsing
protected String	toLiteral(String lex, String lang, String datatype)
protected String	toNode(String node)

Methods inherited from class java.lang.Object

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

Field Detail

out

protected final PrintWriter out

comments

protected final String[] comments

Constructor Detail

NTripleSink

public NTripleSink(OutputStream os,
                   String... comments)
            throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

NTripleSink

public NTripleSink(Writer writer,
                   String... comments)

Method Detail

start

public void start()

Description copied from interface: StatementSink

Begin parsing

Specified by:

start in interface StatementSink

end

public void end()

Description copied from interface: StatementSink

Complete parsing

Specified by:

end in interface StatementSink

addObject

public void addObject(String subject,
                      String predicate,
                      String object)

Description copied from interface: StatementSink

Add statement with non-literal object. Blank nodes begin with _:, variables with ?, otherwise IRI

Specified by:

addObject in interface StatementSink

Parameters:

subject - Subject of triple

predicate - Predicate

object - Object

addLiteral

public void addLiteral(String subject,
                       String predicate,
                       String lex,
                       String lang,
                       String datatype)

Description copied from interface: StatementSink

Add statement with a literal object. As above, blank nodes begin with _:, variables with ?, otherwise IRI

Specified by:

addLiteral in interface StatementSink

Parameters:

subject - Subject of triple

predicate - Predicate

lex - Lexical form

lang - Language (may be null)

datatype - Datatype IRI (may be null)

addPrefix

public void addPrefix(String prefix,
                      String uri)

Description copied from interface: StatementSink

Add a prefix mapping.

Specified by:

addPrefix in interface StatementSink

toNode

protected final String toNode(String node)

toLiteral

protected final String toLiteral(String lex,
                                 String lang,
                                 String datatype)

quote

protected final String quote(String lex)

encode

protected final String encode(String s)

enc

protected String enc(int codepoint)

longenc

protected String longenc(int codepoint)

setBase

public void setBase(String base)

Specified by:

setBase in interface StatementSink