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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | 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 module, 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.
<http://www.perlrdf.org/>.
<http://www.w3.org/DesignIssues/Notation3>.
AUTHOR
Toby Inkster <tobyink@cpan.org>.
COPYRIGHT AND LICENCE
Copyright 2010-2011 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.
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