NAME
RDF::Trine::Node::Literal - RDF Node class for literals
VERSION
This document describes RDF::Trine::Node::Literal version 0.132_02
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.
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_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. Additionaly, invalid lexical forms for xsd:float, xsd:double, and xsd:dateTime will trigger a warning.
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.
AUTHOR
Gregory Todd Williams <gwilliams@cpan.org>
COPYRIGHT
Copyright (c) 2006-2010 Gregory Todd Williams. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.