---
name: "RDF::TriN3"
section: "3pm"
platform: "linux"
package: "librdf-trin3-perl"
version: "0.206-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/RDF::TriN3"
---

# RDF::TriN3(3pm)

notation 3 extensions for RDF::Trine

## NAME

RDF::TriN3 - notation 3 extensions for RDF::Trine

## DESCRIPTION

This module extends RDF::Trine in three ways:

- •

  Adds a Notation 3 parser.

- •

  Adds a Notation 3 serializer.

- •

  Provides a subclass of literals to represent Notation 3 formulae.

In addition, a parser is provided for Notation 3 extended with ShorthandRDF notation - \<http://esw.w3.org/ShorthandRDF\>.

## BUGS AND LIMITATIONS

Implementing N3 logic and the cwm built-ins is considered outside the scope of this distribution, though I am interested in doing that as part of a separate project.

RDF::TriN3 currently relies entirely on RDF::Trine to provide implementations of the concept of graphs, and storage. Thus any graphs that can't be represented using RDF::Trine can't be represented in RDF::TriN3. RDF::Trine's graph model is a superset of RDF, but a subset of Notation 3's model. While this allows literal subjects, and literal and blank node predicates, these may not be supported by all storage engines; additionally top-level variables (?foo), and top-level `@forSome` and `@forAll` (i.e. not nested inside a formula) might cause problems.

RDF::Trine::Store::DBI has some issues with literal subjects, and literal and blank node predicates, allowing them to be stored, but not retrieved. From version 0.128, RDF::Trine::Store::DBI offers a `"clear_restrictions"` method that should resolve these issues. RDF::Trine::Store::Memory is fine. Other stores are not tested.

Please report any bugs to \<http://rt.cpan.org/\>.

## SEE ALSO

RDF::Trine::Node::Formula, RDF::Trine::Parser::Notation3, RDF::Trine::Serializer::Notation3.

RDF::Trine::Parser::ShorthandRDF, RDF::Trine::Parser::Pretdsl.

RDF::Trine.

\<http://www.perlrdf.org/\>.

\<http://www.w3.org/DesignIssues/Notation3\>.

## AUTHOR

Toby Inkster \<tobyink@cpan.org\>.

## COPYRIGHT AND LICENCE

Copyright 2010-2012 Toby Inkster

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

## DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.