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.IX Title "RDF::Trine::Parser::Notation3 3pm"
.TH RDF::Trine::Parser::Notation3 3pm "2022-06-17" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
RDF::Trine::Parser::Notation3 \- Notation 3 Parser
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\& use RDF::Trine::Parser;
\& my $parser     = RDF::Trine::Parser\->new( \*(AqNotation3\*(Aq );
\& $parser\->parse_into_model( $base_uri, $data, $model );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides a Notation 3 parser for RDF::Trine.
.SS "Methods"
.IX Subsection "Methods"
This package exposes the standard RDF::Trine::Parser methods, plus:
.ie n .IP """forAll($handler)""" 4
.el .IP "\f(CWforAll($handler)\fR" 4
.IX Item "forAll($handler)"
Sets a callback handler for \f(CW@forAll\fR directives found in the top-level
graph. (@forAll found in nested formulae will not be passed to this callback.)
.Sp
The handler should be a coderef that takes a single argument: an
RDF::Trine::Node::Resource.
.Sp
If you do not set a handler, a warning will be issued when this directive
are encountered in the top level graph, but parsing will continue.
.ie n .IP """forSome($handler)""" 4
.el .IP "\f(CWforSome($handler)\fR" 4
.IX Item "forSome($handler)"
As \f(CW\*(C`forAll\*(C'\fR but handles \f(CW@forSome\fR directives.
.ie n .IP """parse_formula($base, $input)""" 4
.el .IP "\f(CWparse_formula($base, $input)\fR" 4
.IX Item "parse_formula($base, $input)"
Returns an RDF::Trine::Node::Formula object representing the Notation 3
formula given as \f(CW$input\fR. \f(CW$input\fR should not include the \*(L"{\*(R"...\*(L"}\*(R" wrappers.
.SS "Datatype Callbacks"
.IX Subsection "Datatype Callbacks"
The constructor accepts a hashref of callbacks associated with datatypes,
which will be triggered after a literal has been parsed with that datatype.
Let's imagine that you want to replace all xsd:integer literals with
URIs like \f(CW\*(C`http:;//example.net/numbers/123\*(C'\fR...
.PP
.Vb 10
\& my $parser = RDF::Trine::Parser::Notation3\->new(
\&   datatype_callback => {
\&     \*(Aqhttp://www.w3.org/2001/XMLSchema#integer\*(Aq => sub {
\&       my ($lit, $tr_hnd) = @_;
\&       return RDF::Trine::Node::Resource\->new(
\&         \*(Aqhttp:;//example.net/numbers/\*(Aq . $lit\->literal_value
\&       );
\&     },
\&   },
\& );
.Ve
.PP
Note the second argument passed to the callback \f(CW$tr_hnd\fR. We don't
use it here, but it's a coderef that can be called with RDF::Trine::Statement
objects to add additional triples to the graph being parsed.
.PP
This facility, combined with shortcuts from
RDF::Trine::Parser::ShorthandRDF is pretty useful for creating
domain-specific languages.
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs to
<http://rt.cpan.org/Dist/Display.html?Queue=RDF\-TriN3>.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
RDF::Trine::Parser::NTriples,
RDF::Trine::Parser::Turtle,
RDF::Trine::Parser::ShorthandRDF.
.SH "AUTHOR"
.IX Header "AUTHOR"
Toby Inkster  \f(CW\*(C`<tobyink@cpan.org>\*(C'\fR
.PP
Based on RDF::Trine::Parser::Turtle by Gregory Todd Williams.
.SH "COPYRIGHT AND LICENCE"
.IX Header "COPYRIGHT AND LICENCE"
Copyright (c) 2006\-2010 Gregory Todd Williams.
.PP
Copyright (c) 2010\-2012 Toby Inkster.
.PP
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
.SH "DISCLAIMER OF WARRANTIES"
.IX Header "DISCLAIMER OF WARRANTIES"
\&\s-1THIS PACKAGE IS PROVIDED \*(L"AS IS\*(R" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.\s0