NAME

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

VERSION

       This document describes RDF::Trine::Node::Literal version 1.019

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.