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Manual Reference Pages  -  RDF::TRINE::NODE::LITERAL (3)

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NAME

RDF::Trine::Node::Literal - RDF Node class for literals

CONTENTS

VERSION

This document describes RDF::Trine::Node::Literal version 1.014

METHODS

Beyond the methods documented below, this class inherits methods from the RDF::Trine::Node class.
new ( $string, $lang, $datatype, $canonical_flag ) Returns a new Literal structure.
literal_value Returns the string value of the literal.
literal_value_language Returns the language tag of the ltieral.
literal_datatype Returns the datatype of the literal.
value Returns the literal value.
sse Returns the SSE string for this literal.
as_string Returns a string representation of the node.
as_ntriples Returns the node in a string form suitable for NTriples serialization.
type Returns the type string of this node.
has_language Returns true if this literal is language-tagged, false otherwise.
has_datatype Returns true if this literal is datatyped, false otherwise.
equal ( $node ) Returns true if the two nodes are equal, false otherwise.
canonicalize Returns a new literal node object whose value is in canonical form (where applicable).
canonicalize_literal_value ( $string, $datatype, $warn ) If $datatype is a recognized datatype, returns the canonical lexical representation of the value $string. Otherwise returns $string.

Currently, xsd:integer, xsd:decimal, and xsd:boolean are canonicalized. Additionally, invalid lexical forms for xsd:float, xsd:double, and xsd:dateTime will trigger a warning.

is_canonical_lexical_form
is_valid_lexical_form Returns true if the node is of a recognized datatype and has a valid lexical form for that datatype. If the lexical form is invalid, returns false. If the datatype is unrecognized, returns zero-but-true.
is_numeric_type Returns true if the literal is a known (xsd) numeric type.
numeric_value Returns the numeric value of the literal (even if the literal isn’t a known numeric type.

BUGS

Please report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/perlrdf/issues>.

AUTHOR

Gregory Todd Williams <gwilliams@cpan.org>

COPYRIGHT

Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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perl v5.20.3 RDF::TRINE::NODE::LITERAL (3) 2015-05-17

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