rdf::trine::node::literal(3pm) [debian man page]
RDF::Trine::Node::Literal(3pm) User Contributed Perl Documentation RDF::Trine::Node::Literal(3pm) NAME
RDF::Trine::Node::Literal - RDF Node class for literals VERSION
This document describes RDF::Trine::Node::Literal version 1.000 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_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. perl v5.14.2 2012-06-29 RDF::Trine::Node::Literal(3pm)
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RDF::Trine::Statement(3pm) User Contributed Perl Documentation RDF::Trine::Statement(3pm) NAME
RDF::Trine::Statement - Class for triples and triple patterns VERSION
This document describes RDF::Trine::Statement version 1.000 METHODS
"new ( $s, $p, $o )" Returns a new Triple structure. "construct_args" Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern. "nodes" Returns the subject, predicate and object of the triple pattern. "node_names" Returns the method names for accessing the nodes of this statement. "subject" Returns the subject node of the triple pattern. "predicate" Returns the predicate node of the triple pattern. "object" Returns the object node of the triple pattern. "as_string" Returns the statement in a string form. "has_blanks" Returns true if any of the nodes in this statement are blank nodes. "sse" Returns the SSE string for this algebra expression. "from_sse ( $string, $context )" Parses the supplied SSE-encoded string and returns a RDF::Trine::Statement object. "type" Returns the type of this algebra expression. "referenced_variables" Returns a list of the variable names used in this algebra expression. "definite_variables" Returns a list of the variable names that will be bound after evaluating this algebra expression. "clone" "bind_variables ( \%bound )" Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values. "subsumes ( $statement )" Returns true if this statement will subsume the $statement when matched against a triple store. "from_redland ( $statement )" Given a RDF::Redland::Statement object, returns a perl-native RDF::Trine::Statement object. "rdf_compatible" Returns true if and only if the statement can be expressed in RDF. That is, the subject of the statement must be a resource or blank node; the predicate must be a resource; and the object must be a resource, blank node or literal. RDF::Trine::Statement does allow statements to be created which cannot be expressed in RDF - for instance, statements including variables. 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. perl v5.14.2 2012-06-29 RDF::Trine::Statement(3pm)