RDF::Trine::Node::Literal(3) RDF Node class for literals


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


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.
Returns the string value of the literal.
Returns the language tag of the ltieral.
Returns the datatype of the literal.
Returns the literal value.
Returns the SSE string for this literal.
Returns a string representation of the node.
Returns the node in a string form suitable for NTriples serialization.
Returns the type string of this node.
Returns true if this literal is language-tagged, false otherwise.
Returns true if this literal is datatyped, false otherwise.
"equal ( $node )"
Returns true if the two nodes are equal, false otherwise.
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.

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.
Returns true if the literal is a known (xsd) numeric type.
Returns the numeric value of the literal (even if the literal isn't a known numeric type.


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


Gregory Todd Williams "<[email protected]>"


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.